Always store @ComponentScan details

Refactor JpaComponentScanDetector to a more general use utility and
ensure that details are always stored.

spring-bootstrap/src/main/java/org/springframework/bootstrap/autoconfigure/AutoConfigurationUtils.java

@@ -0,0 +1,63 @@
+/*
+ * Copyright 2012-2013 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
+ *
+ *      http://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.bootstrap.autoconfigure;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import org.springframework.beans.factory.BeanFactory;
+import org.springframework.beans.factory.NoSuchBeanDefinitionException;
+import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
+
+/**
+ * Convenience class for storing base packages during component scan, for reference later
+ * (e.g. by JPA entity scanner).
+ * 
+ * @author Phil Webb
+ * @author Dave Syer
+ */
+public abstract class AutoConfigurationUtils {
+
+	private static String BASE_PACKAGES_BEAN = AutoConfigurationUtils.class.getName()
+			+ ".basePackages";
+
+	@SuppressWarnings("unchecked")
+	public static List<String> getBasePackages(BeanFactory beanFactory) {
+		try {
+			return beanFactory.getBean(BASE_PACKAGES_BEAN, List.class);
+		} catch (NoSuchBeanDefinitionException e) {
+			return Collections.emptyList();
+		}
+	}
+
+	public static void storeBasePackages(ConfigurableListableBeanFactory beanFactory,
+			List<String> basePackages) {
+		if (!beanFactory.containsBean(BASE_PACKAGES_BEAN)) {
+			beanFactory.registerSingleton(BASE_PACKAGES_BEAN, new ArrayList<String>(
+					basePackages));
+		} else {
+			List<String> packages = getBasePackages(beanFactory);
+			for (String pkg : basePackages) {
+				if (packages.contains(pkg)) {
+					packages.add(pkg);
+				}
+			}
+		}
+	}
+
+}

spring-bootstrap/src/main/java/org/springframework/bootstrap/context/annotation/ComponentScanDetector.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package org.springframework.bootstrap.autoconfigure.orm.jpa;
+package org.springframework.bootstrap.context.annotation;
 
 import java.io.IOException;
 import java.util.ArrayList;
@@ -31,8 +31,7 @@ import org.springframework.beans.factory.config.BeanDefinition;
 import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
 import org.springframework.beans.factory.support.AbstractBeanDefinition;
 import org.springframework.beans.factory.support.BeanDefinitionRegistry;
-import org.springframework.bootstrap.autoconfigure.data.JpaRepositoriesAutoConfiguration;
-import org.springframework.bootstrap.context.annotation.AutoConfigurationUtils;
+import org.springframework.bootstrap.autoconfigure.AutoConfigurationUtils;
 import org.springframework.cglib.proxy.Enhancer;
 import org.springframework.context.annotation.ComponentScan;
 import org.springframework.context.annotation.ImportBeanDefinitionRegistrar;
@@ -48,11 +47,13 @@ import org.springframework.util.StringUtils;
 /**
  * Helper to detect a component scan declared in the enclosing context (normally on a
  * {@code @Configuration} class). Once the component scan is detected, the base packages
- * are stored for retrieval later by the {@link JpaRepositoriesAutoConfiguration} .
+ * are stored for retrieval later.
  * 
  * @author Dave Syer
+ * @author Phillip Webb
+ * @see AutoConfigurationUtils
  */
-class JpaComponentScanDetector implements ImportBeanDefinitionRegistrar, BeanFactoryAware {
+class ComponentScanDetector implements ImportBeanDefinitionRegistrar, BeanFactoryAware {
 
 	private final Log logger = LogFactory.getLog(getClass());
 

spring-bootstrap/src/test/java/org/springframework/bootstrap/context/annotation/ComponentScanDetectorConfiguration.java

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2012-2013 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
+ *
+ *      http://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.bootstrap.context.annotation;
+
+import org.springframework.context.annotation.Import;
+
+/**
+ * Simple configuration to import {@link ComponentScanDetector} for tests.
+ * 
+ * @author Phillip Webb
+ */
+@Import(ComponentScanDetector.class)
+public class ComponentScanDetectorConfiguration {
+
+}