Support import into Eclipse 2022-06

Fix a few issues preventing clean project import into Eclipse 2022-06:

  - `buildSrc` need to limit module imports to prevent clashes
    with those in the gradle API jar.

  - The CLI app needs some classpath changes in order to allow
    compileOnly project dependencies to resolve.

  - `AbstractJpaAutoConfigurationTests` needs some minor refactoring
    in order for generic captures to work with the Eclipse compiler.

buildSrc/build.gradle

@@ -2,6 +2,7 @@ plugins {
 	id "java-gradle-plugin"
 	id "io.spring.javaformat" version "${javaFormatVersion}"
 	id "checkstyle"
+	id "eclipse"
 }
 
 repositories {
@@ -110,3 +111,10 @@ gradlePlugin {
 test {
 	useJUnitPlatform()
 }
+
+eclipse.classpath.file.whenMerged {
+	def jreEntry = entries.find { it.path.contains("org.eclipse.jdt.launching.JRE_CONTAINER") }
+	jreEntry.entryAttributes['module'] = 'true'
+	jreEntry.entryAttributes['limit-modules'] = 'java.base'
+}
+

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/orm/jpa/AbstractJpaAutoConfigurationTests.java

@@ -19,6 +19,7 @@ package org.springframework.boot.autoconfigure.orm.jpa;
 import java.io.File;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Set;
 import java.util.UUID;
 
 import javax.sql.DataSource;
@@ -236,8 +237,7 @@ abstract class AbstractJpaAutoConfigurationTests {
 		this.contextRunner.run((context) -> {
 			assertThat(context).hasSingleBean(PersistenceManagedTypes.class);
 			EntityManager entityManager = context.getBean(EntityManagerFactory.class).createEntityManager();
-			assertThat(entityManager.getMetamodel().getManagedTypes().stream().map(ManagedType::getJavaType)
-					.toArray(Class<?>[]::new)).contains(City.class).doesNotContain(Country.class);
+			assertThat(getManagedJavaTypes(entityManager)).contains(City.class).doesNotContain(Country.class);
 		});
 	}
 
@@ -248,8 +248,7 @@ abstract class AbstractJpaAutoConfigurationTests {
 				.run((context) -> {
 					assertThat(context).hasSingleBean(PersistenceManagedTypes.class);
 					EntityManager entityManager = context.getBean(EntityManagerFactory.class).createEntityManager();
-					assertThat(entityManager.getMetamodel().getManagedTypes().stream().map(ManagedType::getJavaType)
-							.toArray(Class<?>[]::new)).contains(Country.class).doesNotContain(City.class);
+					assertThat(getManagedJavaTypes(entityManager)).contains(Country.class).doesNotContain(City.class);
 				});
 	}
 
@@ -277,6 +276,11 @@ abstract class AbstractJpaAutoConfigurationTests {
 				});
 	}
 
+	private Class<?>[] getManagedJavaTypes(EntityManager entityManager) {
+		Set<ManagedType<?>> managedTypes = entityManager.getMetamodel().getManagedTypes();
+		return managedTypes.stream().map(ManagedType::getJavaType).toArray(Class<?>[]::new);
+	}
+
 	@Configuration(proxyBeanMethods = false)
 	static class TestTwoDataSourcesConfiguration {
 

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

@@ -1,5 +1,6 @@
 plugins {
 	id "java"
+	id "eclipse"
 	id "org.springframework.boot.deployed"
 	id "org.springframework.boot.conventions"
 	id "org.springframework.boot.integration-test"
@@ -11,10 +12,12 @@ configurations {
 	dependenciesBom
 	loader
 	testRepository
+	compileOnlyProject
+	compileClasspath.extendsFrom(compileOnlyProject)
 }
 
 dependencies {
-	compileOnly(project(":spring-boot-project:spring-boot"))
+	compileOnlyProject(project(":spring-boot-project:spring-boot"))
 	compileOnly("jakarta.servlet:jakarta.servlet-api")
 	compileOnly("org.apache.groovy:groovy-templates")
 	compileOnly("org.springframework:spring-web")
@@ -199,3 +202,6 @@ publishing {
 	}
 }
 
+eclipse.classpath { // https://github.com/eclipse/buildship/issues/939
+	plusConfigurations += [ configurations.compileOnlyProject ]
+}