detect @bean methods on registered plain bean classes as well (SPR-5795)

Author: jhoeller

org.springframework.context/src/main/java/org/springframework/context/annotation/ConfigurationClassPostProcessor.java

@@ -222,7 +222,8 @@ protected boolean checkConfigurationClassCandidate(BeanDefinition beanDef) {
 				beanDef.setAttribute(CONFIGURATION_CLASS_ATTRIBUTE, CONFIGURATION_CLASS_FULL);
 				return true;
 			}
-			else if (metadata.isAnnotated(Component.class.getName())) {
+			else if (metadata.isAnnotated(Component.class.getName()) ||
+					metadata.hasAnnotatedMethods(Bean.class.getName())) {
 				beanDef.setAttribute(CONFIGURATION_CLASS_ATTRIBUTE, CONFIGURATION_CLASS_LITE);
 				return true;
 			}

org.springframework.core/src/main/java/org/springframework/core/type/AnnotationMetadata.java

@@ -83,6 +83,12 @@ public interface AnnotationMetadata extends ClassMetadata {
 	 */
 	Map<String, Object> getAnnotationAttributes(String annotationType);
 
+	/**
+	 * Determine whether the underlying class has any methods that are
+	 * annotated (or meta-annotated) with the given annotation type.
+	 */
+	boolean hasAnnotatedMethods(String annotationType);
+
 	/**
 	 * Retrieve the method metadata for all methods that are annotated
 	 * (or meta-annotated) with the given annotation type.

org.springframework.core/src/main/java/org/springframework/core/type/StandardAnnotationMetadata.java

@@ -128,6 +128,25 @@ public Map<String, Object> getAnnotationAttributes(String annotationType) {
 		return null;
 	}
 
+	public boolean hasAnnotatedMethods(String annotationType) {
+		Method[] methods = getIntrospectedClass().getDeclaredMethods();
+		for (Method method : methods) {
+			for (Annotation ann : method.getAnnotations()) {
+				if (ann.annotationType().getName().equals(annotationType)) {
+					return true;
+				}
+				else {
+					for (Annotation metaAnn : ann.annotationType().getAnnotations()) {
+						if (metaAnn.annotationType().getName().equals(annotationType)) {
+							return true;
+						}
+					}
+				}
+			}
+		}
+		return false;
+	}
+
 	public Set<MethodMetadata> getAnnotatedMethods(String annotationType) {
 		Method[] methods = getIntrospectedClass().getDeclaredMethods();
 		Set<MethodMetadata> annotatedMethods = new LinkedHashSet<MethodMetadata>();

org.springframework.core/src/main/java/org/springframework/core/type/classreading/AnnotationMetadataReadingVisitor.java

@@ -100,6 +100,15 @@ public Map<String, Object> getAnnotationAttributes(String annotationType) {
 		return this.attributeMap.get(annotationType);
 	}
 
+	public boolean hasAnnotatedMethods(String annotationType) {
+		for (MethodMetadata method : this.methodMetadataSet) {
+			if (method.isAnnotated(annotationType)) {
+				return true;
+			}
+		}
+		return false;
+	}
+
 	public Set<MethodMetadata> getAnnotatedMethods(String annotationType) {
 		Set<MethodMetadata> annotatedMethods = new LinkedHashSet<MethodMetadata>();
 		for (MethodMetadata method : this.methodMetadataSet) {