Add Kotlin alternatives to Java documentation samples

See gh-29499

spring-boot-project/spring-boot-docs/build.gradle

@@ -4,6 +4,7 @@ plugins {
 	id "org.asciidoctor.jvm.convert"
 	id "org.springframework.boot.conventions"
 	id "org.springframework.boot.deployed"
+	id 'org.jetbrains.kotlin.jvm'
 }
 
 description = "Spring Boot Docs"
@@ -102,6 +103,7 @@ dependencies {
 		exclude group: "javax.xml.bind", module: "jaxb-api"
 		exclude group: "org.jboss.spec.javax.transaction", module: "jboss-transaction-api_1.2_spec"
 	}
+	implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8")
 	implementation("org.jooq:jooq") {
 		exclude group: "javax.xml.bind", module: "jaxb-api"
 	}
@@ -321,6 +323,9 @@ syncDocumentationSourceForAsciidoctor {
 	from("src/test/java") {
 		into "test/java"
 	}
+	from("src/main/kotlin") {
+		into "main/kotlin"
+	}
 	from("src/main/groovy") {
 		into "main/groovy"
 	}
@@ -345,6 +350,9 @@ syncDocumentationSourceForAsciidoctorMultipage {
 	from("src/test/java") {
 		into "test/java"
 	}
+	from("src/main/kotlin") {
+		into "main/kotlin"
+	}
 	from("src/main/groovy") {
 		into "main/groovy"
 	}
@@ -369,6 +377,9 @@ syncDocumentationSourceForAsciidoctorPdf {
 	from("src/test/java") {
 		into "test/java"
 	}
+	from("src/main/kotlin") {
+		into "main/kotlin"
+	}
 	from("src/main/groovy") {
 		into "main/groovy"
 	}

spring-boot-project/spring-boot-docs/src/docs/asciidoc/attributes.adoc

@@ -19,6 +19,7 @@
 :github-issues: https://github.com/{github-repo}/issues/
 :github-wiki: https://github.com/{github-repo}/wiki
 :docs-java: {docdir}/../main/java/org/springframework/boot/docs
+:docs-kotlin: {docdir}/../main/kotlin/org/springframework/boot/docs
 :docs-groovy: {docdir}/../main/groovy/org/springframework/boot/docs
 :docs-resources: ../../main/resources
 :spring-boot-code: https://github.com/{github-repo}/tree/{github-tag}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/cloudfoundry/customcontextpath/MyCloudFoundryConfiguration.kt

@@ -0,0 +1,60 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.cloudfoundry.customcontextpath
+
+import org.apache.catalina.Host
+import org.apache.catalina.core.StandardContext
+import org.apache.catalina.startup.Tomcat.FixContextListener
+import org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory
+import org.springframework.boot.web.servlet.ServletContextInitializer
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+import java.io.IOException
+import javax.servlet.*
+import kotlin.jvm.Throws
+
+@Configuration(proxyBeanMethods = false)
+class MyCloudFoundryConfiguration {
+	@Bean
+	fun servletWebServerFactory(): TomcatServletWebServerFactory {
+		return object : TomcatServletWebServerFactory() {
+			override fun prepareContext(host: Host, initializers: Array<ServletContextInitializer>) {
+				super.prepareContext(host, initializers)
+				val child = StandardContext()
+				child.addLifecycleListener(FixContextListener())
+				child.path = "/cloudfoundryapplication"
+				val initializer = getServletContextInitializer(contextPath)
+				child.addServletContainerInitializer(initializer, emptySet())
+				child.crossContext = true
+				host.addChild(child)
+			}
+		}
+	}
+
+	private fun getServletContextInitializer(contextPath: String): ServletContainerInitializer {
+		return ServletContainerInitializer { classes: Set<Class<*>?>?, context: ServletContext ->
+			val servlet: Servlet = object : GenericServlet() {
+				@Throws(ServletException::class, IOException::class)
+				override fun service(req: ServletRequest, res: ServletResponse) {
+					val context = req.servletContext.getContext(contextPath)
+					context.getRequestDispatcher("/cloudfoundryapplication").forward(req, res)
+				}
+			}
+			context.addServlet("cloudfoundry", servlet).addMapping("/*")
+		}
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/endpoints/health/reactivehealthindicators/MyReactiveHealthIndicator.kt

@@ -0,0 +1,40 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.endpoints.health.reactivehealthindicators
+
+import org.springframework.boot.actuate.health.Health
+import org.springframework.boot.actuate.health.ReactiveHealthIndicator
+import org.springframework.stereotype.Component
+import reactor.core.publisher.Mono
+
+@Component
+class MyReactiveHealthIndicator : ReactiveHealthIndicator {
+	override fun health(): Mono<Health> {
+		// @formatter:off
+		return doHealthCheck()!!.onErrorResume { exception: Throwable? ->
+			Mono.just(
+				Health.Builder().down(exception).build()
+			)
+		}
+		// @formatter:on
+	}
+
+	private fun doHealthCheck(): Mono<Health>? {
+		// perform some specific health check
+		return  /**/null
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/endpoints/health/writingcustomhealthindicators/MyHealthIndicator.kt

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.endpoints.health.writingcustomhealthindicators
+
+import org.springframework.boot.actuate.health.Health
+import org.springframework.boot.actuate.health.HealthIndicator
+import org.springframework.stereotype.Component
+
+@Component
+class MyHealthIndicator : HealthIndicator {
+	override fun health(): Health {
+		val errorCode = check()
+		return if (errorCode != 0) {
+			Health.down().withDetail("Error Code", errorCode).build()
+		} else Health.up().build()
+	}
+
+	private fun check(): Int {
+		// perform some specific health check
+		return  /**/0
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/endpoints/implementingcustom/CustomData.kt

@@ -0,0 +1,19 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.endpoints.implementingcustom
+
+class CustomData(val name: String, val counter: Int)

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/endpoints/implementingcustom/MyEndpoint.kt

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.endpoints.implementingcustom
+
+import org.springframework.boot.actuate.endpoint.annotation.Endpoint
+import org.springframework.boot.actuate.endpoint.annotation.ReadOperation
+import org.springframework.boot.actuate.endpoint.annotation.WriteOperation
+
+@Endpoint(id = "custom")
+class MyEndpoint {
+	// tag::read[]
+	@get:ReadOperation
+	val data: CustomData
+		get() = CustomData("test", 5)
+
+	// end::read[]
+	// tag::write[]
+	@WriteOperation
+	fun updateData(name: String?, counter: Int) {
+		// injects "test" and 42
+	} // end::write[]
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/endpoints/info/writingcustominfocontributors/MyInfoContributor.kt

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.endpoints.info.writingcustominfocontributors
+
+import org.springframework.boot.actuate.info.Info
+import org.springframework.boot.actuate.info.InfoContributor
+import org.springframework.stereotype.Component
+import java.util.*
+
+@Component
+class MyInfoContributor : InfoContributor {
+	override fun contribute(builder: Info.Builder) {
+		builder.withDetail("example", Collections.singletonMap("key", "value"))
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/endpoints/security/exposeall/MySecurityConfiguration.kt

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.endpoints.security.exposeall
+
+import org.springframework.boot.actuate.autoconfigure.security.servlet.EndpointRequest
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+import org.springframework.security.config.annotation.web.builders.HttpSecurity
+import org.springframework.security.config.annotation.web.configurers.ExpressionUrlAuthorizationConfigurer
+import org.springframework.security.config.annotation.web.configurers.ExpressionUrlAuthorizationConfigurer.ExpressionInterceptUrlRegistry
+import org.springframework.security.web.SecurityFilterChain
+
+@Configuration(proxyBeanMethods = false)
+class MySecurityConfiguration {
+	@Bean
+	fun securityFilterChain(http: HttpSecurity): SecurityFilterChain {
+		http.requestMatcher(EndpointRequest.toAnyEndpoint())
+			.authorizeRequests { requests: ExpressionUrlAuthorizationConfigurer<HttpSecurity>.ExpressionInterceptUrlRegistry ->
+				requests.anyRequest().permitAll()
+			}
+		return http.build()
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/endpoints/security/typical/MySecurityConfiguration.kt

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.endpoints.security.typical
+
+import org.springframework.boot.actuate.autoconfigure.security.servlet.EndpointRequest
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+import org.springframework.security.config.annotation.web.builders.HttpSecurity
+import org.springframework.security.config.annotation.web.configurers.ExpressionUrlAuthorizationConfigurer
+import org.springframework.security.config.annotation.web.configurers.ExpressionUrlAuthorizationConfigurer.ExpressionInterceptUrlRegistry
+import org.springframework.security.web.SecurityFilterChain
+
+@Configuration(proxyBeanMethods = false)
+class MySecurityConfiguration {
+	@Bean
+	fun securityFilterChain(http: HttpSecurity): SecurityFilterChain {
+		http.requestMatcher(EndpointRequest.toAnyEndpoint())
+			.authorizeRequests { requests: ExpressionUrlAuthorizationConfigurer<HttpSecurity>.ExpressionInterceptUrlRegistry ->
+				requests.anyRequest().hasRole("ENDPOINT_ADMIN")
+			}
+		http.httpBasic()
+		return http.build()
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/metrics/customizing/MyMetricsFilterConfiguration.kt

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.metrics.customizing
+
+import io.micrometer.core.instrument.config.MeterFilter
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+
+@Configuration(proxyBeanMethods = false)
+class MyMetricsFilterConfiguration {
+	@Bean
+	fun renameRegionTagMeterFilter(): MeterFilter {
+		return MeterFilter.renameTag("com.example", "mytag.region", "mytag.area")
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/metrics/export/graphite/MyGraphiteConfiguration.kt

@@ -0,0 +1,44 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.metrics.export.graphite
+
+import io.micrometer.core.instrument.Clock
+import io.micrometer.core.instrument.Meter
+import io.micrometer.core.instrument.config.NamingConvention
+import io.micrometer.core.instrument.util.HierarchicalNameMapper
+import io.micrometer.graphite.GraphiteConfig
+import io.micrometer.graphite.GraphiteMeterRegistry
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+
+@Configuration(proxyBeanMethods = false)
+class MyGraphiteConfiguration {
+	@Bean
+	fun graphiteMeterRegistry(config: GraphiteConfig, clock: Clock): GraphiteMeterRegistry {
+		return GraphiteMeterRegistry(config, clock,
+			HierarchicalNameMapper { id: Meter.Id, convention: NamingConvention ->
+				toHierarchicalName(
+					id,
+					convention
+				)
+			})
+	}
+
+	private fun toHierarchicalName(id: Meter.Id, convention: NamingConvention): String {
+		return  /**/HierarchicalNameMapper.DEFAULT.toHierarchicalName(id, convention)
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/metrics/export/jmx/MyJmxConfiguration.kt

@@ -0,0 +1,44 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.metrics.export.jmx
+
+import io.micrometer.core.instrument.Clock
+import io.micrometer.core.instrument.Meter
+import io.micrometer.core.instrument.config.NamingConvention
+import io.micrometer.core.instrument.util.HierarchicalNameMapper
+import io.micrometer.jmx.JmxConfig
+import io.micrometer.jmx.JmxMeterRegistry
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+
+@Configuration(proxyBeanMethods = false)
+class MyJmxConfiguration {
+	@Bean
+	fun jmxMeterRegistry(config: JmxConfig, clock: Clock): JmxMeterRegistry {
+		return JmxMeterRegistry(config, clock,
+			HierarchicalNameMapper { id: Meter.Id, convention: NamingConvention ->
+				toHierarchicalName(
+					id,
+					convention
+				)
+			})
+	}
+
+	private fun toHierarchicalName(id: Meter.Id, convention: NamingConvention): String {
+		return  /**/HierarchicalNameMapper.DEFAULT.toHierarchicalName(id, convention)
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/metrics/gettingstarted/commontags/MyMeterRegistryConfiguration.kt

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.metrics.gettingstarted.commontags
+
+import io.micrometer.core.instrument.MeterRegistry
+import org.springframework.boot.actuate.autoconfigure.metrics.MeterRegistryCustomizer
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+
+@Configuration(proxyBeanMethods = false)
+class MyMeterRegistryConfiguration {
+	@Bean
+	fun metricsCommonTags(): MeterRegistryCustomizer<MeterRegistry> {
+		return MeterRegistryCustomizer { registry: MeterRegistry ->
+			registry.config().commonTags("region", "us-east-1")
+		}
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/metrics/gettingstarted/specifictype/MyMeterRegistryConfiguration.kt

@@ -0,0 +1,45 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.metrics.gettingstarted.specifictype
+
+import io.micrometer.core.instrument.Meter
+import io.micrometer.core.instrument.config.NamingConvention
+import io.micrometer.graphite.GraphiteMeterRegistry
+import org.springframework.boot.actuate.autoconfigure.metrics.MeterRegistryCustomizer
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+
+@Configuration(proxyBeanMethods = false)
+class MyMeterRegistryConfiguration {
+	@Bean
+	fun graphiteMetricsNamingConvention(): MeterRegistryCustomizer<GraphiteMeterRegistry> {
+		return MeterRegistryCustomizer { registry: GraphiteMeterRegistry ->
+			registry.config().namingConvention(
+				NamingConvention { name: String?, type: Meter.Type?, baseUnit: String? ->
+					name(
+						name!!,
+						type!!,
+						baseUnit
+					)
+				})
+		}
+	}
+
+	private fun name(name: String, type: Meter.Type, baseUnit: String?): String {
+		return  /**/NamingConvention.snakeCase.name(name, type, baseUnit)
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/metrics/registeringcustom/Dictionary.kt

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.metrics.registeringcustom
+
+internal class Dictionary {
+	val words: List<String>
+		get() = emptyList()
+
+	companion object {
+		fun load(): Dictionary {
+			return Dictionary()
+		}
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/metrics/registeringcustom/MyBean.kt

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.metrics.registeringcustom
+
+import io.micrometer.core.instrument.MeterRegistry
+import io.micrometer.core.instrument.Tags
+import org.springframework.stereotype.Component
+
+@Component
+class MyBean(registry: MeterRegistry) {
+	private val dictionary: Dictionary
+
+	init {
+		dictionary = Dictionary.load()
+		registry.gauge("dictionary.size", Tags.empty(), dictionary.words.size)
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/metrics/registeringcustom/MyMeterBinderConfiguration.kt

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.metrics.registeringcustom
+
+import io.micrometer.core.instrument.Gauge
+import io.micrometer.core.instrument.MeterRegistry
+import io.micrometer.core.instrument.binder.MeterBinder
+import org.springframework.context.annotation.Bean
+
+class MyMeterBinderConfiguration {
+	@Bean
+	fun queueSize(queue: Queue): MeterBinder {
+		return MeterBinder { registry: MeterRegistry ->
+			Gauge.builder(
+				"queueSize"
+			) { queue.size() }.register(registry)
+		}
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/metrics/registeringcustom/Queue.kt

@@ -0,0 +1,23 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.metrics.registeringcustom
+
+class Queue {
+	fun size(): Int {
+		return 5
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/metrics/supported/mongodb/command/CustomCommandTagsProvider.kt

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.metrics.supported.mongodb.command
+
+import com.mongodb.event.CommandEvent
+import io.micrometer.core.instrument.Tag
+import io.micrometer.core.instrument.binder.mongodb.MongoCommandTagsProvider
+
+class CustomCommandTagsProvider : MongoCommandTagsProvider {
+	override fun commandTags(commandEvent: CommandEvent): Iterable<Tag> {
+		return emptyList()
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/metrics/supported/mongodb/command/MyCommandTagsProviderConfiguration.kt

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.metrics.supported.mongodb.command
+
+import io.micrometer.core.instrument.binder.mongodb.MongoCommandTagsProvider
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+
+@Configuration(proxyBeanMethods = false)
+class MyCommandTagsProviderConfiguration {
+
+	@Bean
+	fun customCommandTagsProvider(): MongoCommandTagsProvider? {
+		return CustomCommandTagsProvider()
+	}
+
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/metrics/supported/mongodb/connectionpool/CustomConnectionPoolTagsProvider.kt

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.metrics.supported.mongodb.connectionpool
+
+import com.mongodb.event.ConnectionPoolCreatedEvent
+import io.micrometer.core.instrument.Tag
+import io.micrometer.core.instrument.binder.mongodb.MongoConnectionPoolTagsProvider
+
+class CustomConnectionPoolTagsProvider : MongoConnectionPoolTagsProvider {
+	override fun connectionPoolTags(event: ConnectionPoolCreatedEvent): Iterable<Tag> {
+		return emptyList()
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/metrics/supported/mongodb/connectionpool/MyConnectionPoolTagsProviderConfiguration.kt

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.metrics.supported.mongodb.connectionpool
+
+import io.micrometer.core.instrument.binder.mongodb.MongoConnectionPoolTagsProvider
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+
+@Configuration(proxyBeanMethods = false)
+class MyConnectionPoolTagsProviderConfiguration {
+	@Bean
+	fun customConnectionPoolTagsProvider(): MongoConnectionPoolTagsProvider {
+		return CustomConnectionPoolTagsProvider()
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/metrics/supported/timedannotation/all/Address.kt

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.metrics.supported.timedannotation.all
+
+class Address {
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/metrics/supported/timedannotation/all/MyController.kt

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.metrics.supported.timedannotation.all
+
+import io.micrometer.core.annotation.Timed
+import org.springframework.web.bind.annotation.GetMapping
+import org.springframework.web.bind.annotation.RestController
+
+@RestController
+@Timed
+class MyController {
+	@GetMapping("/api/addresses")
+	fun listAddress(): List<Address>? {
+		return  /**/null
+	}
+
+	@GetMapping("/api/people")
+	fun listPeople(): List<Person>? {
+		return  /**/null
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/metrics/supported/timedannotation/all/Person.kt

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.metrics.supported.timedannotation.all
+
+class Person {
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/metrics/supported/timedannotation/change/Address.kt

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.metrics.supported.timedannotation.change
+
+class Address {
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/metrics/supported/timedannotation/change/MyController.kt

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.metrics.supported.timedannotation.change
+
+import io.micrometer.core.annotation.Timed
+import org.springframework.web.bind.annotation.GetMapping
+import org.springframework.web.bind.annotation.RestController
+
+@RestController
+@Timed
+class MyController {
+	@GetMapping("/api/addresses")
+	fun listAddress(): List<Address>? {
+		return  /**/null
+	}
+
+	@GetMapping("/api/people")
+	@Timed(value = "all.people", longTask = true, extraTags = ["region", "us-east-1"])
+	fun listPeople(): List<Person>? {
+		return  /**/null
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/metrics/supported/timedannotation/change/Person.kt

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.metrics.supported.timedannotation.change
+
+class Person {
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/metrics/supported/timedannotation/single/Address.kt

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.metrics.supported.timedannotation.single
+
+class Address {
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/metrics/supported/timedannotation/single/MyController.kt

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.metrics.supported.timedannotation.single
+
+import io.micrometer.core.annotation.Timed
+import org.springframework.web.bind.annotation.GetMapping
+import org.springframework.web.bind.annotation.RestController
+
+@RestController
+class MyController {
+	@GetMapping("/api/addresses")
+	fun listAddress(): List<Address>? {
+		return  /**/null
+	}
+
+	@GetMapping("/api/people")
+	@Timed
+	fun listPeople(): List<Person>? {
+		return  /**/null
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/actuator/metrics/supported/timedannotation/single/Person.kt

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.actuator.metrics.supported.timedannotation.single
+
+class Person {
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/buildtoolplugins/otherbuildsystems/examplerepackageimplementation/MyBuildTool.kt

@@ -0,0 +1,48 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.buildtoolplugins.otherbuildsystems.examplerepackageimplementation
+
+import org.springframework.boot.loader.tools.Library
+import org.springframework.boot.loader.tools.LibraryCallback
+import org.springframework.boot.loader.tools.LibraryScope
+import org.springframework.boot.loader.tools.Repackager
+import java.io.File
+import java.io.IOException
+import kotlin.jvm.Throws
+
+class MyBuildTool {
+	@Throws(IOException::class)
+	fun build() {
+		val sourceJarFile: File? =  /**/null
+		val repackager = Repackager(sourceJarFile)
+		repackager.setBackupSource(false)
+		repackager.repackage { callback: LibraryCallback -> getLibraries(callback) }
+	}
+
+	@Throws(IOException::class)
+	private fun getLibraries(callback: LibraryCallback) {
+		// Build system specific implementation, callback for each dependency
+		for (nestedJar in compileScopeJars!!) {
+			callback.library(Library(nestedJar, LibraryScope.COMPILE))
+		}
+		// ...
+	}
+
+	/**/
+	private val compileScopeJars: List<File>?
+		get() =/**/null
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/configurationmetadata/annotationprocessor/automaticmetadatageneration/MyMessagingProperties.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.configurationmetadata.annotationprocessor.automaticmetadatageneration
+
+import org.springframework.boot.context.properties.ConfigurationProperties
+import java.util.*
+
+@ConfigurationProperties(prefix = "my.messaging")
+class MyMessagingProperties(
+	val addresses: List<String> = ArrayList(Arrays.asList("a", "b")),
+	var containerType: ContainerType = ContainerType.SIMPLE) {
+
+	enum class ContainerType {
+		SIMPLE, DIRECT
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/configurationmetadata/annotationprocessor/automaticmetadatageneration/MyServerProperties.kt

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.configurationmetadata.annotationprocessor.automaticmetadatageneration
+
+import org.springframework.boot.context.properties.ConfigurationProperties
+
+@ConfigurationProperties(prefix = "my.server")
+class MyServerProperties(
+	/**
+	 * Name of the server.
+	 */
+	var name: String,
+	/**
+	 * IP address to listen to.
+	 */
+	var ip: String = "127.0.0.1",
+	/**
+	 * Port to listen to.
+	 */
+	var port: Int = 9797) {
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/configurationmetadata/annotationprocessor/automaticmetadatageneration/nestedproperties/MyServerProperties.kt

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.configurationmetadata.annotationprocessor.automaticmetadatageneration.nestedproperties
+
+import org.springframework.boot.context.properties.ConfigurationProperties
+
+@ConfigurationProperties(prefix = "my.server")
+class MyServerProperties(
+	var name: String,
+	var host: Host) {
+
+	class Host(val ip: String, val port: Int = 0)
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/configurationmetadata/format/group/MyProperties.kt

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.configurationmetadata.format.group
+
+import org.springframework.boot.context.properties.ConfigurationProperties
+import org.springframework.boot.context.properties.DeprecatedConfigurationProperty
+
+@ConfigurationProperties("my.app")
+class MyProperties(val name: String?) {
+	var target: String? = null
+		@Deprecated("") @DeprecatedConfigurationProperty(replacement = "my.app.name") get
+		@Deprecated("") set
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/configurationmetadata/manualhints/valuehint/MyProperties.kt

@@ -0,0 +1,7 @@
+package org.springframework.boot.docs.configurationmetadata.manualhints.valuehint
+
+import org.springframework.boot.context.properties.ConfigurationProperties
+
+@ConfigurationProperties("my")
+class MyProperties(val contexts: Map<String, Int>) {
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/nosql/cassandra/connecting/MyBean.kt

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.nosql.cassandra.connecting
+
+import org.springframework.data.cassandra.core.CassandraTemplate
+import org.springframework.stereotype.Component
+
+@Component
+class MyBean(private val template: CassandraTemplate) {
+	// @fold:on // ...
+	fun someMethod(): Long {
+		return template.count(User::class.java)
+	} // @fold:off
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/nosql/couchbase/repositories/CouchbaseProperties.kt

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.nosql.couchbase.repositories
+
+class CouchbaseProperties {
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/nosql/couchbase/repositories/MyBean.kt

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.nosql.couchbase.repositories
+
+import org.springframework.data.couchbase.core.CouchbaseTemplate
+import org.springframework.stereotype.Component
+
+@Component
+class MyBean(private val template: CouchbaseTemplate) {
+	// @fold:on // ...
+	fun someMethod(): String {
+		return template.bucketName
+	} // @fold:off
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/nosql/couchbase/repositories/MyConverter.kt

@@ -0,0 +1,26 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.nosql.couchbase.repositories
+
+import org.springframework.core.convert.converter.Converter
+
+internal class MyConverter :
+	Converter<CouchbaseProperties?, Boolean> {
+	override fun convert(value: CouchbaseProperties?): Boolean {
+		return true
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/nosql/couchbase/repositories/MyCouchbaseConfiguration.kt

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.nosql.couchbase.repositories
+
+import org.assertj.core.util.Arrays
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+import org.springframework.data.couchbase.config.BeanNames
+import org.springframework.data.couchbase.core.convert.CouchbaseCustomConversions
+
+@Configuration(proxyBeanMethods = false)
+class MyCouchbaseConfiguration {
+	@Bean(BeanNames.COUCHBASE_CUSTOM_CONVERSIONS)
+	fun myCustomConversions(): CouchbaseCustomConversions {
+		return CouchbaseCustomConversions(Arrays.asList(MyConverter()))
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/nosql/elasticsearch/connectingusingspringdata/MyBean.kt

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.nosql.elasticsearch.connectingusingspringdata
+
+import org.springframework.data.elasticsearch.core.ElasticsearchRestTemplate
+import org.springframework.stereotype.Component
+
+@Component
+class MyBean(private val template: ElasticsearchRestTemplate) {
+	// @fold:on // ...
+	fun someMethod(id: String): Boolean {
+		return template.exists(id, User::class.java)
+	} // @fold:off
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/nosql/elasticsearch/connectingusingspringdata/User.kt

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.nosql.elasticsearch.connectingusingspringdata
+
+class User {
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/nosql/ldap/repositories/MyBean.kt

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.nosql.ldap.repositories
+
+import org.springframework.ldap.core.LdapTemplate
+import org.springframework.stereotype.Component
+
+@Component
+class MyBean(private val template: LdapTemplate) {
+	// @fold:on // ...
+	fun someMethod(): List<User> {
+		return template.findAll(User::class.java)
+	} // @fold:off
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/nosql/ldap/repositories/User.kt

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.nosql.ldap.repositories
+
+class User {
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/nosql/mongodb/connecting/MyBean.kt

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.nosql.mongodb.connecting
+
+import com.mongodb.client.MongoCollection
+import org.bson.Document
+import org.springframework.data.mongodb.MongoDatabaseFactory
+import org.springframework.stereotype.Component
+
+@Component
+class MyBean(private val mongo: MongoDatabaseFactory) {
+	// @fold:on // ...
+	fun someMethod(): MongoCollection<Document> {
+		val db = mongo.mongoDatabase
+		return db.getCollection("users")
+	} // @fold:off
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/nosql/mongodb/repositories/City.kt

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.nosql.mongodb.repositories
+
+class City {
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/nosql/mongodb/repositories/CityRepository.kt

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.nosql.mongodb.repositories
+
+import org.springframework.data.domain.Page
+import org.springframework.data.domain.Pageable
+import org.springframework.data.repository.Repository
+
+interface CityRepository :
+	Repository<City?, Long?> {
+	fun findAll(pageable: Pageable?): Page<City?>?
+	fun findByNameAndStateAllIgnoringCase(name: String?, state: String?): City?
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/nosql/mongodb/template/MyBean.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.nosql.mongodb.template
+
+import com.mongodb.client.MongoCollection
+import org.bson.Document
+import org.springframework.data.mongodb.core.MongoTemplate
+import org.springframework.stereotype.Component
+
+@Component
+class MyBean(private val mongoTemplate: MongoTemplate) {
+	// @fold:on // ...
+	fun someMethod(): MongoCollection<Document> {
+		return mongoTemplate.getCollection("users")
+	} // @fold:off
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/nosql/neo4j/connecting/MyBean.kt

@@ -0,0 +1,39 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.nosql.neo4j.connecting
+
+import org.neo4j.driver.Driver
+import org.neo4j.driver.Transaction
+import org.neo4j.driver.Values
+import org.springframework.stereotype.Component
+
+@Component
+class MyBean(private val driver: Driver) {
+	// @fold:on // ...
+	fun someMethod(message: String?): String {
+		driver.session().use { session ->
+			return session.writeTransaction { transaction: Transaction ->
+				transaction
+					.run(
+						"CREATE (a:Greeting) SET a.message = \$message RETURN a.message + ', from node ' + id(a)",
+						Values.parameters("message", message)
+					)
+					.single()[0].asString()
+			}
+		}
+	} // @fold:off
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/nosql/neo4j/repositories/City.kt

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.nosql.neo4j.repositories
+
+class City {
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/nosql/neo4j/repositories/CityRepository.kt

@@ -0,0 +1,25 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.nosql.neo4j.repositories
+
+import org.springframework.data.neo4j.repository.Neo4jRepository
+import java.util.*
+
+interface CityRepository :
+	Neo4jRepository<City?, Long?> {
+	fun findOneByNameAndState(name: String?, state: String?): Optional<City?>?
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/nosql/neo4j/repositories/MyNeo4jConfiguration.kt

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.nosql.neo4j.repositories
+
+import org.neo4j.driver.Driver
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+import org.springframework.data.neo4j.core.ReactiveDatabaseSelectionProvider
+import org.springframework.data.neo4j.core.transaction.ReactiveNeo4jTransactionManager
+
+@Configuration(proxyBeanMethods = false)
+class MyNeo4jConfiguration {
+	@Bean
+	fun reactiveTransactionManager(
+		driver: Driver,
+		databaseNameProvider: ReactiveDatabaseSelectionProvider
+	): ReactiveNeo4jTransactionManager {
+		return ReactiveNeo4jTransactionManager(driver, databaseNameProvider)
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/nosql/redis/connecting/MyBean.kt

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.nosql.redis.connecting
+
+import org.springframework.data.redis.core.StringRedisTemplate
+import org.springframework.stereotype.Component
+
+@Component
+class MyBean(private val template: StringRedisTemplate) {
+	// @fold:on // ...
+	fun someMethod(): Boolean {
+		return template.hasKey("spring")
+	} // @fold:off
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/nosql/solr/connecting/MyBean.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.nosql.solr.connecting
+
+import org.apache.solr.client.solrj.SolrClient
+import org.apache.solr.client.solrj.response.SolrPingResponse
+import org.springframework.stereotype.Component
+
+
+@Component
+class MyBean(private val solr: SolrClient) {
+	// @fold:on // ...
+	fun someMethod(): SolrPingResponse {
+		return solr.ping("users")
+	} // @fold:off
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/sql/jdbctemplate/MyBean.kt

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.sql.jdbctemplate
+
+import org.springframework.jdbc.core.JdbcTemplate
+import org.springframework.stereotype.Component
+
+@Component
+class MyBean(private val jdbcTemplate: JdbcTemplate) {
+	fun doSomething() {
+		jdbcTemplate.execute("delete from customer")
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/sql/jooq/dslcontext/MyBean.kt

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.sql.jooq.dslcontext
+
+import org.jooq.DSLContext
+import org.springframework.stereotype.Component
+import java.util.*
+
+@Component
+class MyBean(private val create: DSLContext) {
+	// tag::method[]
+	fun authorsBornAfter1980(): List<GregorianCalendar> {
+		// @formatter:off
+		return create.selectFrom<Tables.TAuthorRecord>(Tables.AUTHOR)
+			.where(Tables.AUTHOR?.DATE_OF_BIRTH?.greaterThan(GregorianCalendar(1980, 0, 1)))
+			.fetch(Tables.AUTHOR?.DATE_OF_BIRTH)
+		// @formatter:on
+	} // end::method[]
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/sql/jooq/dslcontext/Tables.kt

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.sql.jooq.dslcontext
+
+import org.jooq.Name
+import org.jooq.Table
+import org.jooq.TableField
+import org.jooq.impl.TableImpl
+import org.jooq.impl.TableRecordImpl
+import java.util.*
+
+object Tables {
+	val AUTHOR: TAuthor? = null
+
+	abstract class TAuthor(name: Name?) : TableImpl<TAuthorRecord?>(name) {
+		val DATE_OF_BIRTH: TableField<TAuthorRecord, GregorianCalendar>? = null
+	}
+
+	abstract class TAuthorRecord(table: Table<TAuthorRecord?>?) :
+		TableRecordImpl<TAuthorRecord?>(table)
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/sql/jpaandspringdata/entityclasses/City.kt

@@ -0,0 +1,51 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.sql.jpaandspringdata.entityclasses
+
+import java.io.Serializable
+import javax.persistence.Column
+import javax.persistence.Entity
+import javax.persistence.GeneratedValue
+import javax.persistence.Id
+
+@Entity
+class City : Serializable {
+	@Id
+	@GeneratedValue
+	private val id: Long? = null
+
+	@Column(nullable = false)
+	var name: String? = null
+		private set
+
+	// ... etc
+	@Column(nullable = false)
+	var state: String? = null
+		private set
+
+	// ... additional members, often include @OneToMany mappings
+
+	protected constructor() {
+		// no-args constructor required by JPA spec
+		// this one is protected since it should not be used directly
+	}
+
+	constructor(name: String?, state: String?) {
+		this.name = name
+		this.state = state
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/sql/jpaandspringdata/entityclasses/Country.kt

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.sql.jpaandspringdata.entityclasses
+
+import org.hibernate.envers.Audited
+import java.io.Serializable
+import javax.persistence.Column
+import javax.persistence.Entity
+import javax.persistence.GeneratedValue
+import javax.persistence.Id
+
+@Entity
+class Country : Serializable {
+	@Id
+	@GeneratedValue
+	var id: Long? = null
+
+	@Audited
+	@Column(nullable = false)
+	var name: String? = null
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/sql/jpaandspringdata/repositories/CityRepository.kt

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.sql.jpaandspringdata.repositories
+
+import org.springframework.boot.docs.data.sql.jpaandspringdata.entityclasses.City
+import org.springframework.data.domain.Page
+import org.springframework.data.domain.Pageable
+import org.springframework.data.repository.Repository
+
+interface CityRepository :
+	Repository<City?, Long?> {
+	fun findAll(pageable: Pageable?): Page<City?>?
+	fun findByNameAndStateAllIgnoringCase(name: String?, state: String?): City?
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/sql/jpaandspringdata/repositories/CountryRepository.kt

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.sql.jpaandspringdata.repositories
+
+import org.springframework.boot.docs.data.sql.jpaandspringdata.entityclasses.Country
+import org.springframework.data.domain.Page
+import org.springframework.data.domain.Pageable
+import org.springframework.data.repository.Repository
+import org.springframework.data.repository.history.RevisionRepository
+
+interface CountryRepository :
+	RevisionRepository<Country?, Long?, Int>,
+	Repository<Country?, Long?> {
+	fun findAll(pageable: Pageable?): Page<Country?>?
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/sql/r2dbc/MyPostgresR2dbcConfiguration.kt

@@ -0,0 +1,39 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.sql.r2dbc
+
+import io.r2dbc.postgresql.PostgresqlConnectionFactoryProvider
+import io.r2dbc.spi.ConnectionFactoryOptions
+import org.springframework.boot.autoconfigure.r2dbc.ConnectionFactoryOptionsBuilderCustomizer
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+
+@Configuration(proxyBeanMethods = false)
+class MyPostgresR2dbcConfiguration {
+	@Bean
+	fun postgresCustomizer(): ConnectionFactoryOptionsBuilderCustomizer {
+		val options: MutableMap<String, String> = HashMap()
+		options["lock_timeout"] = "30s"
+		options["statement_timeout"] = "60s"
+		return ConnectionFactoryOptionsBuilderCustomizer { builder: ConnectionFactoryOptions.Builder ->
+			builder.option(
+				PostgresqlConnectionFactoryProvider.OPTIONS,
+				options
+			)
+		}
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/sql/r2dbc/MyR2dbcConfiguration.kt

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.sql.r2dbc
+
+import io.r2dbc.spi.ConnectionFactoryOptions
+import org.springframework.boot.autoconfigure.r2dbc.ConnectionFactoryOptionsBuilderCustomizer
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+
+@Configuration(proxyBeanMethods = false)
+class MyR2dbcConfiguration {
+	@Bean
+	fun connectionFactoryPortCustomizer(): ConnectionFactoryOptionsBuilderCustomizer {
+		return ConnectionFactoryOptionsBuilderCustomizer { builder: ConnectionFactoryOptions.Builder ->
+			builder.option(
+				ConnectionFactoryOptions.PORT,
+				5432
+			)
+		}
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/sql/r2dbc/repositories/City.kt

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.sql.r2dbc.repositories
+
+class City {
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/sql/r2dbc/repositories/CityRepository.kt

@@ -0,0 +1,25 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.sql.r2dbc.repositories
+
+import org.springframework.data.repository.Repository
+import reactor.core.publisher.Mono
+
+interface CityRepository :
+	Repository<City?, Long?> {
+	fun findByNameAndStateAllIgnoringCase(name: String?, state: String?): Mono<City?>?
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/data/sql/r2dbc/usingdatabaseclient/MyBean.kt

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.data.sql.r2dbc.usingdatabaseclient
+
+import org.springframework.r2dbc.core.DatabaseClient
+import org.springframework.stereotype.Component
+import reactor.core.publisher.Flux
+
+@Component
+class MyBean(private val databaseClient: DatabaseClient) {
+	// @fold:on // ...
+	fun someMethod(): Flux<Map<String, Any>> {
+		return databaseClient.sql("select * from user").fetch().all()
+	} // @fold:off
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/deployment/cloud/cloudfoundry/bindingtoservices/MyBean.kt

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.deployment.cloud.cloudfoundry.bindingtoservices
+
+import org.springframework.context.EnvironmentAware
+import org.springframework.core.env.Environment
+import org.springframework.stereotype.Component
+
+@Component
+class MyBean : EnvironmentAware {
+	private var instanceId: String? = null
+	override fun setEnvironment(environment: Environment) {
+		instanceId = environment.getProperty("vcap.application.instance_id")
+	}
+
+	// ...
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/devtools/restart/disable/MyApplication.kt

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.devtools.restart.disable
+
+import org.springframework.boot.autoconfigure.SpringBootApplication
+import org.springframework.boot.docs.using.structuringyourcode.locatingthemainclass.MyApplication
+import org.springframework.boot.runApplication
+
+@SpringBootApplication
+class MyApplication
+
+fun main(args: Array<String>) {
+	System.setProperty("spring.devtools.restart.enabled", "false")
+	runApplication<MyApplication>(*args)
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/developingautoconfiguration/conditionannotations/beanconditions/MyAutoConfiguration.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.developingautoconfiguration.conditionannotations.beanconditions
+
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+
+@Configuration(proxyBeanMethods = false)
+class MyAutoConfiguration {
+	@Bean
+	@ConditionalOnMissingBean
+	fun someService(): SomeService {
+		return SomeService()
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/developingautoconfiguration/conditionannotations/beanconditions/SomeService.kt

@@ -0,0 +1,19 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.developingautoconfiguration.conditionannotations.beanconditions
+
+class SomeService

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/developingautoconfiguration/conditionannotations/classconditions/MyAutoConfiguration.kt

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.developingautoconfiguration.conditionannotations.classconditions
+
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+
+@Configuration(proxyBeanMethods = false)
+// Some conditions ...
+class MyAutoConfiguration {
+	// Auto-configured beans ...
+	@Configuration(proxyBeanMethods = false)
+	@ConditionalOnClass(SomeService::class)
+	class SomeServiceConfiguration {
+		@Bean
+		@ConditionalOnMissingBean
+		fun someService(): SomeService {
+			return SomeService()
+		}
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/developingautoconfiguration/conditionannotations/classconditions/SomeService.kt

@@ -0,0 +1,19 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.developingautoconfiguration.conditionannotations.classconditions
+
+class SomeService

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/developingautoconfiguration/customstarter/configurationkeys/AcmeProperties.kt

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.developingautoconfiguration.customstarter.configurationkeys
+
+import org.springframework.boot.context.properties.ConfigurationProperties
+import java.time.Duration
+
+@ConfigurationProperties("acme")
+class AcmeProperties(
+	/**
+	 * Whether to check the location of acme resources.
+	 */
+	var isCheckLocation: Boolean = true,
+
+	/**
+	 * Timeout for establishing a connection to the acme server.
+	 */
+	var loginTimeout:Duration = Duration.ofSeconds(3))

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/developingautoconfiguration/testing/MyConditionEvaluationReportingTests.kt

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.developingautoconfiguration.testing
+
+import org.junit.jupiter.api.Test
+import org.springframework.boot.autoconfigure.logging.ConditionEvaluationReportLoggingListener
+import org.springframework.boot.logging.LogLevel
+import org.springframework.boot.test.context.assertj.AssertableApplicationContext
+import org.springframework.boot.test.context.runner.ApplicationContextRunner
+
+class MyConditionEvaluationReportingTests {
+	@Test
+	fun autoConfigTest() {
+		// @formatter:off
+		ApplicationContextRunner()
+			.withInitializer(ConditionEvaluationReportLoggingListener(LogLevel.INFO))
+			.run { context: AssertableApplicationContext? -> }
+		// @formatter:on
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/developingautoconfiguration/testing/MyService.kt

@@ -0,0 +1,19 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.developingautoconfiguration.testing
+
+class MyService(val name: String)

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/developingautoconfiguration/testing/MyServiceAutoConfiguration.kt

@@ -0,0 +1,43 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.developingautoconfiguration.testing
+
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean
+import org.springframework.boot.context.properties.ConfigurationProperties
+import org.springframework.boot.context.properties.EnableConfigurationProperties
+import org.springframework.boot.docs.features.developingautoconfiguration.testing.MyServiceAutoConfiguration.UserProperties
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+
+@Configuration(proxyBeanMethods = false)
+@ConditionalOnClass(MyService::class)
+@EnableConfigurationProperties(
+	UserProperties::class
+)
+class MyServiceAutoConfiguration {
+	@Bean
+	@ConditionalOnMissingBean
+	fun userService(properties: UserProperties): MyService {
+		return MyService(properties.name)
+	}
+
+	@ConfigurationProperties("user")
+	class UserProperties {
+		var name = "test"
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/developingautoconfiguration/testing/MyServiceAutoConfigurationTests.kt

@@ -0,0 +1,91 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.developingautoconfiguration.testing
+
+import org.assertj.core.api.Assertions
+import org.junit.jupiter.api.Test
+import org.springframework.boot.autoconfigure.AutoConfigurations
+import org.springframework.boot.test.context.FilteredClassLoader
+import org.springframework.boot.test.context.assertj.AssertableApplicationContext
+import org.springframework.boot.test.context.runner.ApplicationContextRunner
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+
+
+internal open class MyServiceAutoConfigurationTests {
+	// tag::runner[]
+	val contextRunner = ApplicationContextRunner()
+		.withConfiguration(AutoConfigurations.of(MyServiceAutoConfiguration::class.java))
+
+	// end::runner[]
+	// tag::test-env[]
+	@Test
+	fun serviceNameCanBeConfigured() {
+		contextRunner.withPropertyValues("user.name=test123").run { context: AssertableApplicationContext ->
+			Assertions.assertThat(context)
+				.hasSingleBean(
+					MyService::class.java
+				)
+			Assertions.assertThat(
+				context.getBean(
+					MyService::class.java
+				).name
+			).isEqualTo("test123")
+		}
+	}
+
+	// end::test-env[]
+	// tag::test-classloader[]
+	@Test
+	fun serviceIsIgnoredIfLibraryIsNotPresent() {
+		contextRunner.withClassLoader(FilteredClassLoader(MyService::class.java))
+			.run { context: AssertableApplicationContext? ->
+				Assertions.assertThat(
+					context
+				).doesNotHaveBean("myService")
+			}
+	}
+
+	// end::test-classloader[]
+	// tag::test-user-config[]
+	@Test
+	fun defaultServiceBacksOff() {
+		contextRunner.withUserConfiguration(UserConfiguration::class.java)
+			.run { context: AssertableApplicationContext ->
+				Assertions.assertThat(
+					context
+				).hasSingleBean(
+					MyService::class.java
+				)
+				Assertions.assertThat(
+					context
+				).getBean("myCustomService").isSameAs(
+					context.getBean(
+						MyService::class.java
+					)
+				)
+			}
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	internal class UserConfiguration {
+		@Bean
+		fun myCustomService(): MyService {
+			return MyService("mine")
+		}
+	} // end::test-user-config[]
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/externalconfig/MyBean.kt

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.externalconfig
+
+import org.springframework.beans.factory.annotation.Value
+import org.springframework.stereotype.Component
+
+@Component
+class MyBean {
+	@Value("\${name}")
+	private val name: String? = null
+
+	// ...
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/externalconfig/typesafeconfigurationproperties/constructorbinding/MyProperties.kt

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.externalconfig.typesafeconfigurationproperties.constructorbinding
+
+import org.springframework.boot.context.properties.ConfigurationProperties
+import org.springframework.boot.context.properties.ConstructorBinding
+import org.springframework.boot.context.properties.bind.DefaultValue
+import java.net.InetAddress
+
+@ConstructorBinding
+@ConfigurationProperties("my.service")
+class MyProperties(val enabled: Boolean, val remoteAddress: InetAddress, val security: Security) {
+
+	class Security(
+		val username: String, val password: String,
+		@param:DefaultValue("USER") val roles: List<String>
+	)
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/externalconfig/typesafeconfigurationproperties/constructorbinding/nonnull/MyProperties.kt

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.externalconfig.typesafeconfigurationproperties.constructorbinding.nonnull
+
+import org.springframework.boot.context.properties.ConfigurationProperties
+import org.springframework.boot.context.properties.ConstructorBinding
+import org.springframework.boot.context.properties.bind.DefaultValue
+import java.net.InetAddress
+
+@ConstructorBinding
+@ConfigurationProperties("my.service")
+class MyProperties(
+	val isEnabled: Boolean, val remoteAddress: InetAddress, @param:DefaultValue val security: Security
+) {
+
+	class Security(
+		val username: String, val password: String,
+		@param:DefaultValue("USER") val roles: List<String>
+	)
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/externalconfig/typesafeconfigurationproperties/conversion/datasizes/constructorbinding/MyProperties.kt

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.externalconfig.typesafeconfigurationproperties.conversion.datasizes.constructorbinding
+
+import org.springframework.boot.context.properties.ConfigurationProperties
+import org.springframework.boot.context.properties.ConstructorBinding
+import org.springframework.boot.context.properties.bind.DefaultValue
+import org.springframework.boot.convert.DataSizeUnit
+import org.springframework.util.unit.DataSize
+import org.springframework.util.unit.DataUnit
+
+@ConfigurationProperties("my")
+@ConstructorBinding
+class MyProperties(
+	@param:DataSizeUnit(DataUnit.MEGABYTES) @param:DefaultValue("2MB")
+	val bufferSize: DataSize,
+	@param:DefaultValue("512B") val sizeThreshold: DataSize
+)

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/externalconfig/typesafeconfigurationproperties/conversion/datasizes/javabeanbinding/MyProperties.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.externalconfig.typesafeconfigurationproperties.conversion.datasizes.javabeanbinding
+
+import org.springframework.boot.context.properties.ConfigurationProperties
+import org.springframework.boot.convert.DataSizeUnit
+import org.springframework.util.unit.DataSize
+import org.springframework.util.unit.DataUnit
+
+@ConfigurationProperties("my")
+class MyProperties {
+	@DataSizeUnit(DataUnit.MEGABYTES)
+	var bufferSize = DataSize.ofMegabytes(2)
+
+	var sizeThreshold = DataSize.ofBytes(512)
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/externalconfig/typesafeconfigurationproperties/conversion/durations/constructorbinding/MyProperties.kt

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.externalconfig.typesafeconfigurationproperties.conversion.durations.constructorbinding
+
+import org.springframework.boot.context.properties.ConfigurationProperties
+import org.springframework.boot.context.properties.ConstructorBinding
+import org.springframework.boot.context.properties.bind.DefaultValue
+import org.springframework.boot.convert.DurationUnit
+import java.time.Duration
+import java.time.temporal.ChronoUnit
+
+@ConfigurationProperties("my")
+@ConstructorBinding
+class MyProperties(
+	@param:DurationUnit(ChronoUnit.SECONDS) @param:DefaultValue("30s") val sessionTimeout: Duration,
+	@param:DefaultValue("1000ms") val readTimeout: Duration
+)

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/externalconfig/typesafeconfigurationproperties/conversion/durations/javabeanbinding/MyProperties.kt

@@ -0,0 +1,14 @@
+package org.springframework.boot.docs.features.externalconfig.typesafeconfigurationproperties.conversion.durations.javabeanbinding
+
+import org.springframework.boot.context.properties.ConfigurationProperties
+import org.springframework.boot.convert.DurationUnit
+import java.time.Duration
+import java.time.temporal.ChronoUnit
+
+@ConfigurationProperties("my")
+class MyProperties {
+	@DurationUnit(ChronoUnit.SECONDS)
+	var sessionTimeout = Duration.ofSeconds(30)
+
+	var readTimeout = Duration.ofMillis(1000)
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/externalconfig/typesafeconfigurationproperties/enablingannotatedtypes/MyApplication.kt

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.externalconfig.typesafeconfigurationproperties.enablingannotatedtypes
+
+import org.springframework.boot.autoconfigure.SpringBootApplication
+import org.springframework.boot.context.properties.ConfigurationPropertiesScan
+
+@SpringBootApplication
+@ConfigurationPropertiesScan("com.example.app", "com.example.another")
+class MyApplication

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/externalconfig/typesafeconfigurationproperties/enablingannotatedtypes/MyConfiguration.kt

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.externalconfig.typesafeconfigurationproperties.enablingannotatedtypes
+
+import org.springframework.boot.context.properties.EnableConfigurationProperties
+import org.springframework.context.annotation.Configuration
+
+@Configuration(proxyBeanMethods = false)
+@EnableConfigurationProperties(SomeProperties::class)
+class MyConfiguration

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/externalconfig/typesafeconfigurationproperties/javabeanbinding/MyProperties.kt

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.externalconfig.typesafeconfigurationproperties.javabeanbinding
+
+import org.springframework.boot.context.properties.ConfigurationProperties
+import java.net.InetAddress
+
+@ConfigurationProperties("my.service")
+class MyProperties {
+	var isEnabled = false
+	var remoteAddress: InetAddress? = null
+	val security = Security()
+
+	class Security {
+		var username: String? = null
+		var password: String? = null
+
+		var roles: List<String> = ArrayList(setOf("USER"))
+	}
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/externalconfig/typesafeconfigurationproperties/mergingcomplextypes/list/MyPojo.kt

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.externalconfig.typesafeconfigurationproperties.mergingcomplextypes.list
+
+class MyPojo {
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/externalconfig/typesafeconfigurationproperties/mergingcomplextypes/list/MyProperties.kt

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.externalconfig.typesafeconfigurationproperties.mergingcomplextypes.list
+
+import org.springframework.boot.context.properties.ConfigurationProperties
+
+@ConfigurationProperties("my")
+class MyProperties {
+	val list: List<MyPojo> = ArrayList()
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/externalconfig/typesafeconfigurationproperties/mergingcomplextypes/map/MyPojo.kt

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.externalconfig.typesafeconfigurationproperties.mergingcomplextypes.map
+
+class MyPojo {
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/externalconfig/typesafeconfigurationproperties/mergingcomplextypes/map/MyProperties.kt

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.externalconfig.typesafeconfigurationproperties.mergingcomplextypes.map
+
+import org.springframework.boot.context.properties.ConfigurationProperties
+
+@ConfigurationProperties("my")
+class MyProperties {
+	val map: Map<String, MyPojo> = LinkedHashMap()
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/externalconfig/typesafeconfigurationproperties/relaxedbinding/MyPersonProperties.kt

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.externalconfig.typesafeconfigurationproperties.relaxedbinding
+
+import org.springframework.boot.context.properties.ConfigurationProperties
+
+@ConfigurationProperties(prefix = "my.main-project.person")
+class MyPersonProperties {
+	var firstName: String? = null
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/externalconfig/typesafeconfigurationproperties/thirdpartyconfiguration/AnotherComponent.kt

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.externalconfig.typesafeconfigurationproperties.thirdpartyconfiguration
+
+class AnotherComponent {
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/externalconfig/typesafeconfigurationproperties/thirdpartyconfiguration/ThirdPartyConfiguration.kt

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.externalconfig.typesafeconfigurationproperties.thirdpartyconfiguration
+
+import org.springframework.boot.context.properties.ConfigurationProperties
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+
+@Configuration(proxyBeanMethods = false)
+class ThirdPartyConfiguration {
+	@Bean
+	@ConfigurationProperties(prefix = "another")
+	fun anotherComponent(): AnotherComponent = AnotherComponent()
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/externalconfig/typesafeconfigurationproperties/usingannotatedtypes/MyService.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.externalconfig.typesafeconfigurationproperties.usingannotatedtypes
+
+import org.springframework.stereotype.Service
+
+@Service
+class MyService(val properties: SomeProperties) {
+	fun openConnection() {
+		val server = Server(properties.remoteAddress)
+		server.start()
+		// ...
+	}
+
+	// ...
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/externalconfig/typesafeconfigurationproperties/usingannotatedtypes/SomeProperties.kt

@@ -0,0 +1,21 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.boot.docs.features.externalconfig.typesafeconfigurationproperties.usingannotatedtypes
+
+class SomeProperties {
+	val remoteAddress: Any?
+		get() = null
+}

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/externalconfig/typesafeconfigurationproperties/validate/MyProperties.kt

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.externalconfig.typesafeconfigurationproperties.validate
+
+import org.springframework.boot.context.properties.ConfigurationProperties
+import org.springframework.validation.annotation.Validated
+import java.net.InetAddress
+import javax.validation.constraints.NotNull
+
+@ConfigurationProperties("my.service")
+@Validated
+class MyProperties {
+	var remoteAddress: @NotNull InetAddress? = null
+}