AnnotatedElementUtils adapts post-processed values to AnnotationAttributes as well

Issue: SPR-12065

spring-context/src/test/java/org/springframework/context/annotation/ConfigurationClassPostProcessorTests.java

@@ -28,6 +28,7 @@ import org.junit.Test;
 import org.springframework.aop.scope.ScopedObject;
 import org.springframework.aop.scope.ScopedProxyUtils;
 import org.springframework.beans.factory.FactoryBean;
+import org.springframework.beans.factory.NoSuchBeanDefinitionException;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor;
 import org.springframework.beans.factory.annotation.Qualifier;
@@ -39,6 +40,7 @@ import org.springframework.beans.factory.support.RootBeanDefinition;
 import org.springframework.context.annotation.componentscan.simple.SimpleComponent;
 import org.springframework.core.env.StandardEnvironment;
 import org.springframework.core.io.DescriptiveResource;
+import org.springframework.stereotype.Component;
 import org.springframework.tests.sample.beans.ITestBean;
 import org.springframework.tests.sample.beans.TestBean;
 import org.springframework.util.Assert;
@@ -126,19 +128,33 @@ public class ConfigurationClassPostProcessorTests {
 	}
 
 	@Test
-	public void postProcessorWorksWithComposedConfigurationWithAttributeOverridesUsingReflection() {
+	public void postProcessorWorksWithComposedConfigurationWithAttributeOverrideForBasePackageUsingReflection() {
 		RootBeanDefinition beanDefinition = new RootBeanDefinition(
-				ComposedConfigurationWithAttributeOverridesClass.class);
+				ComposedConfigurationWithAttributeOverrideForBasePackage.class);
 		assertSupportForComposedAnnotation(beanDefinition);
 	}
 
 	@Test
-	public void postProcessorWorksWithComposedConfigurationWithAttributeOverridesUsingAsm() {
+	public void postProcessorWorksWithComposedConfigurationWithAttributeOverrideForBasePackageUsingAsm() {
 		RootBeanDefinition beanDefinition = new RootBeanDefinition(
-				ComposedConfigurationWithAttributeOverridesClass.class.getName());
+				ComposedConfigurationWithAttributeOverrideForBasePackage.class.getName());
 		assertSupportForComposedAnnotation(beanDefinition);
 	}
 
+	@Test
+	public void postProcessorWorksWithComposedConfigurationWithAttributeOverrideForExcludeFilterUsingReflection() {
+		RootBeanDefinition beanDefinition = new RootBeanDefinition(
+				ComposedConfigurationWithAttributeOverrideForExcludeFilter.class);
+		assertSupportForComposedAnnotationWithExclude(beanDefinition);
+	}
+
+	@Test
+	public void postProcessorWorksWithComposedConfigurationWithAttributeOverrideForExcludeFilterUsingAsm() {
+		RootBeanDefinition beanDefinition = new RootBeanDefinition(
+				ComposedConfigurationWithAttributeOverrideForExcludeFilter.class.getName());
+		assertSupportForComposedAnnotationWithExclude(beanDefinition);
+	}
+
 	@Test
 	public void postProcessorWorksWithComposedComposedConfigurationWithAttributeOverridesUsingReflection() {
 		RootBeanDefinition beanDefinition = new RootBeanDefinition(
@@ -181,6 +197,29 @@ public class ConfigurationClassPostProcessorTests {
 		assertSupportForComposedAnnotation(beanDefinition);
 	}
 
+	private void assertSupportForComposedAnnotation(RootBeanDefinition beanDefinition) {
+		beanFactory.registerBeanDefinition("config", beanDefinition);
+		ConfigurationClassPostProcessor pp = new ConfigurationClassPostProcessor();
+		pp.setEnvironment(new StandardEnvironment());
+		pp.postProcessBeanFactory(beanFactory);
+		SimpleComponent simpleComponent = beanFactory.getBean(SimpleComponent.class);
+		assertNotNull(simpleComponent);
+	}
+
+	private void assertSupportForComposedAnnotationWithExclude(RootBeanDefinition beanDefinition) {
+		beanFactory.registerBeanDefinition("config", beanDefinition);
+		ConfigurationClassPostProcessor pp = new ConfigurationClassPostProcessor();
+		pp.setEnvironment(new StandardEnvironment());
+		pp.postProcessBeanFactory(beanFactory);
+		try {
+			beanFactory.getBean(SimpleComponent.class);
+			fail("Should have thrown NoSuchBeanDefinitionException");
+		}
+		catch (NoSuchBeanDefinitionException ex) {
+			// expected
+		}
+	}
+
 	@Test
 	public void postProcessorOverridesNonApplicationBeanDefinitions() {
 		RootBeanDefinition rbd = new RootBeanDefinition(TestBean.class);
@@ -378,15 +417,6 @@ public class ConfigurationClassPostProcessorTests {
 		assertSame(beanFactory.getBean("genericRepo"), beanFactory.getBean("repoConsumer"));
 	}
 
-	private void assertSupportForComposedAnnotation(RootBeanDefinition beanDefinition) {
-		beanFactory.registerBeanDefinition("config", beanDefinition);
-		ConfigurationClassPostProcessor pp = new ConfigurationClassPostProcessor();
-		pp.setEnvironment(new StandardEnvironment());
-		pp.postProcessBeanFactory(beanFactory);
-		SimpleComponent simpleComponent = beanFactory.getBean(SimpleComponent.class);
-		assertNotNull(simpleComponent);
-	}
-
 	@Test
 	public void testSelfReferenceExclusionForFactoryMethodOnSameBean() {
 		AutowiredAnnotationBeanPostProcessor bpp = new AutowiredAnnotationBeanPostProcessor();
@@ -718,10 +748,17 @@ public class ConfigurationClassPostProcessorTests {
 	public static @interface ComposedConfigurationWithAttributeOverrides {
 
 		String[] basePackages() default {};
+
+		ComponentScan.Filter[] excludeFilters() default {};
 	}
 
 	@ComposedConfigurationWithAttributeOverrides(basePackages = "org.springframework.context.annotation.componentscan.simple")
-	public static class ComposedConfigurationWithAttributeOverridesClass {
+	public static class ComposedConfigurationWithAttributeOverrideForBasePackage {
+	}
+
+	@ComposedConfigurationWithAttributeOverrides(basePackages = "org.springframework.context.annotation.componentscan.simple",
+			excludeFilters = @ComponentScan.Filter(Component.class))
+	public static class ComposedConfigurationWithAttributeOverrideForExcludeFilter {
 	}
 
 	@ComposedConfigurationWithAttributeOverrides

spring-core/src/main/java/org/springframework/core/annotation/AnnotatedElementUtils.java

@@ -40,7 +40,6 @@ public class AnnotatedElementUtils {
 	public static Set<String> getMetaAnnotationTypes(AnnotatedElement element, String annotationType) {
 		final Set<String> types = new LinkedHashSet<String>();
 		process(element, annotationType, false, new Processor<Object>() {
-
 			@Override
 			public Object process(Annotation annotation, int metaDepth) {
 				if (metaDepth > 0) {
@@ -48,7 +47,6 @@ public class AnnotatedElementUtils {
 				}
 				return null;
 			}
-
 			@Override
 			public void postProcess(Annotation annotation, Object result) {
 			}
@@ -101,7 +99,7 @@ public class AnnotatedElementUtils {
 					if (!AnnotationUtils.VALUE.equals(key)) {
 						Object value = AnnotationUtils.getValue(annotation, key);
 						if (value != null) {
-							result.put(key, value);
+							result.put(key, AnnotationUtils.adaptValue(value, classValuesAsString, nestedAnnotationsAsMap));
 						}
 					}
 				}
@@ -109,8 +107,7 @@ public class AnnotatedElementUtils {
 		});
 	}
 
-	public static MultiValueMap<String, Object> getAllAnnotationAttributes(AnnotatedElement element,
-			String annotationType) {
+	public static MultiValueMap<String, Object> getAllAnnotationAttributes(AnnotatedElement element, String annotationType) {
 		return getAllAnnotationAttributes(element, annotationType, false, false);
 	}
 
@@ -122,8 +119,8 @@ public class AnnotatedElementUtils {
 			@Override
 			public Void process(Annotation annotation, int metaDepth) {
 				if (annotation.annotationType().getName().equals(annotationType)) {
-					for (Map.Entry<String, Object> entry : AnnotationUtils.getAnnotationAttributes(annotation,
-						classValuesAsString, nestedAnnotationsAsMap).entrySet()) {
+					for (Map.Entry<String, Object> entry : AnnotationUtils.getAnnotationAttributes(
+							annotation, classValuesAsString, nestedAnnotationsAsMap).entrySet()) {
 						attributes.add(entry.getKey(), entry.getValue());
 					}
 				}
@@ -163,7 +160,7 @@ public class AnnotatedElementUtils {
 
 		try {
 			return doProcess(element, annotationType, traverseClassHierarchy, processor,
-				new HashSet<AnnotatedElement>(), 0);
+					new HashSet<AnnotatedElement>(), 0);
 		}
 		catch (Throwable ex) {
 			throw new IllegalStateException("Failed to introspect annotations: " + element, ex);
@@ -199,8 +196,8 @@ public class AnnotatedElementUtils {
 					if (result != null) {
 						return result;
 					}
-					result = doProcess(annotation.annotationType(), annotationType, traverseClassHierarchy, processor,
-						visited, metaDepth + 1);
+					result = doProcess(annotation.annotationType(), annotationType, traverseClassHierarchy,
+							processor, visited, metaDepth + 1);
 					if (result != null) {
 						processor.postProcess(annotation, result);
 						return result;
@@ -210,7 +207,7 @@ public class AnnotatedElementUtils {
 			for (Annotation annotation : annotations) {
 				if (!AnnotationUtils.isInJavaLangAnnotationPackage(annotation)) {
 					T result = doProcess(annotation.annotationType(), annotationType, traverseClassHierarchy,
-						processor, visited, metaDepth);
+							processor, visited, metaDepth);
 					if (result != null) {
 						processor.postProcess(annotation, result);
 						return result;
@@ -220,8 +217,7 @@ public class AnnotatedElementUtils {
 			if (traverseClassHierarchy && element instanceof Class) {
 				Class<?> superclass = ((Class<?>) element).getSuperclass();
 				if (superclass != null && !superclass.equals(Object.class)) {
-					T result = doProcess(superclass, annotationType, true, processor, visited,
-						metaDepth);
+					T result = doProcess(superclass, annotationType, true, processor, visited, metaDepth);
 					if (result != null) {
 						return result;
 					}
@@ -247,7 +243,7 @@ public class AnnotatedElementUtils {
 		 * will have a depth of 2.
 		 * @param annotation the annotation to process
 		 * @param metaDepth the depth of the annotation relative to the initial element
-		 * @return the result of the processing or {@code null} to continue
+		 * @return the result of the processing, or {@code null} to continue
 		 */
 		T process(Annotation annotation, int metaDepth);
 

spring-core/src/main/java/org/springframework/core/annotation/AnnotationUtils.java

@@ -578,34 +578,7 @@ public abstract class AnnotationUtils {
 			if (method.getParameterTypes().length == 0 && method.getReturnType() != void.class) {
 				try {
 					Object value = method.invoke(annotation);
-					if (classValuesAsString) {
-						if (value instanceof Class) {
-							value = ((Class<?>) value).getName();
-						}
-						else if (value instanceof Class[]) {
-							Class<?>[] clazzArray = (Class[]) value;
-							String[] newValue = new String[clazzArray.length];
-							for (int i = 0; i < clazzArray.length; i++) {
-								newValue[i] = clazzArray[i].getName();
-							}
-							value = newValue;
-						}
-					}
-					if (nestedAnnotationsAsMap && value instanceof Annotation) {
-						attrs.put(method.getName(),
-								getAnnotationAttributes((Annotation) value, classValuesAsString, true));
-					}
-					else if (nestedAnnotationsAsMap && value instanceof Annotation[]) {
-						Annotation[] realAnnotations = (Annotation[]) value;
-						AnnotationAttributes[] mappedAnnotations = new AnnotationAttributes[realAnnotations.length];
-						for (int i = 0; i < realAnnotations.length; i++) {
-							mappedAnnotations[i] = getAnnotationAttributes(realAnnotations[i], classValuesAsString, true);
-						}
-						attrs.put(method.getName(), mappedAnnotations);
-					}
-					else {
-						attrs.put(method.getName(), value);
-					}
+					attrs.put(method.getName(), adaptValue(value, classValuesAsString, nestedAnnotationsAsMap));
 				}
 				catch (Exception ex) {
 					throw new IllegalStateException("Could not obtain annotation attribute values", ex);
@@ -615,6 +588,48 @@ public abstract class AnnotationUtils {
 		return attrs;
 	}
 
+	/**
+	 * Adapt the given value according to the given class and nested annotation settings.
+	 * @param value the annotation attribute value
+	 * @param classValuesAsString whether to turn Class references into Strings (for
+	 * compatibility with {@link org.springframework.core.type.AnnotationMetadata}
+	 * or to preserve them as Class references
+	 * @param nestedAnnotationsAsMap whether to turn nested Annotation instances into
+	 * {@link AnnotationAttributes} maps (for compatibility with
+	 * {@link org.springframework.core.type.AnnotationMetadata} or to preserve them as
+	 * Annotation instances
+	 * @return the adapted value, or the original value if no adaptation is needed
+	 */
+	static Object adaptValue(Object value, boolean classValuesAsString, boolean nestedAnnotationsAsMap) {
+		if (classValuesAsString) {
+			if (value instanceof Class) {
+				value = ((Class<?>) value).getName();
+			}
+			else if (value instanceof Class[]) {
+				Class<?>[] clazzArray = (Class[]) value;
+				String[] newValue = new String[clazzArray.length];
+				for (int i = 0; i < clazzArray.length; i++) {
+					newValue[i] = clazzArray[i].getName();
+				}
+				value = newValue;
+			}
+		}
+		if (nestedAnnotationsAsMap && value instanceof Annotation) {
+			return getAnnotationAttributes((Annotation) value, classValuesAsString, true);
+		}
+		else if (nestedAnnotationsAsMap && value instanceof Annotation[]) {
+			Annotation[] realAnnotations = (Annotation[]) value;
+			AnnotationAttributes[] mappedAnnotations = new AnnotationAttributes[realAnnotations.length];
+			for (int i = 0; i < realAnnotations.length; i++) {
+				mappedAnnotations[i] = getAnnotationAttributes(realAnnotations[i], classValuesAsString, true);
+			}
+			return mappedAnnotations;
+		}
+		else {
+			return value;
+		}
+	}
+
 	/**
 	 * Retrieve the <em>value</em> of the {@code &quot;value&quot;} attribute of a
 	 * single-element Annotation, given an annotation instance.