Consistent alias processing behind AnnotatedTypeMetadata abstraction (also for ASM)

Issue: SPR-14427

spring-context/src/main/java/org/springframework/context/annotation/AnnotationScopeMetadataResolver.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * Copyright 2002-2016 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.
@@ -79,9 +79,10 @@ public class AnnotationScopeMetadataResolver implements ScopeMetadataResolver {
 		ScopeMetadata metadata = new ScopeMetadata();
 		if (definition instanceof AnnotatedBeanDefinition) {
 			AnnotatedBeanDefinition annDef = (AnnotatedBeanDefinition) definition;
-			AnnotationAttributes attributes = AnnotationConfigUtils.attributesFor(annDef.getMetadata(), this.scopeAnnotationType);
+			AnnotationAttributes attributes = AnnotationConfigUtils.attributesFor(
+					annDef.getMetadata(), this.scopeAnnotationType);
 			if (attributes != null) {
-				metadata.setScopeName(attributes.getAliasedString("value", this.scopeAnnotationType, definition.getSource()));
+				metadata.setScopeName(attributes.getString("value"));
 				ScopedProxyMode proxyMode = attributes.getEnum("proxyMode");
 				if (proxyMode == null || proxyMode == ScopedProxyMode.DEFAULT) {
 					proxyMode = this.defaultProxyMode;

spring-context/src/main/java/org/springframework/context/annotation/ComponentScanAnnotationParser.java

@@ -122,7 +122,7 @@ class ComponentScanAnnotationParser {
 		}
 
 		Set<String> basePackages = new LinkedHashSet<>();
-		String[] basePackagesArray = componentScan.getAliasedStringArray("basePackages", ComponentScan.class, declaringClass);
+		String[] basePackagesArray = componentScan.getStringArray("basePackages");
 		for (String pkg : basePackagesArray) {
 			String[] tokenized = StringUtils.tokenizeToStringArray(this.environment.resolvePlaceholders(pkg),
 					ConfigurableApplicationContext.CONFIG_LOCATION_DELIMITERS);
@@ -148,7 +148,7 @@ class ComponentScanAnnotationParser {
 		List<TypeFilter> typeFilters = new ArrayList<>();
 		FilterType filterType = filterAttributes.getEnum("type");
 
-		for (Class<?> filterClass : filterAttributes.getAliasedClassArray("classes", ComponentScan.Filter.class, null)) {
+		for (Class<?> filterClass : filterAttributes.getClassArray("classes")) {
 			switch (filterType) {
 				case ANNOTATION:
 					Assert.isAssignable(Annotation.class, filterClass,

spring-context/src/main/java/org/springframework/context/annotation/ConfigurationClassBeanDefinitionReader.java

@@ -236,7 +236,7 @@ class ConfigurationClassBeanDefinitionReader {
 		ScopedProxyMode proxyMode = ScopedProxyMode.NO;
 		AnnotationAttributes attributes = AnnotationConfigUtils.attributesFor(metadata, Scope.class);
 		if (attributes != null) {
-			beanDef.setScope(attributes.getAliasedString("value", Scope.class, configClass.getResource()));
+			beanDef.setScope(attributes.getString("value"));
 			proxyMode = attributes.getEnum("proxyMode");
 			if (proxyMode == ScopedProxyMode.DEFAULT) {
 				proxyMode = ScopedProxyMode.NO;

spring-context/src/main/java/org/springframework/context/annotation/ConfigurationClassParser.java

@@ -287,8 +287,9 @@ class ConfigurationClassParser {
 
 		// Process any @ImportResource annotations
 		if (sourceClass.getMetadata().isAnnotated(ImportResource.class.getName())) {
-			AnnotationAttributes importResource = AnnotationConfigUtils.attributesFor(sourceClass.getMetadata(), ImportResource.class);
+			AnnotationAttributes importResource =
-			String[] resources = importResource.getAliasedStringArray("locations", ImportResource.class, sourceClass);
+					AnnotationConfigUtils.attributesFor(sourceClass.getMetadata(), ImportResource.class);
+			String[] resources = importResource.getStringArray("locations");
 			Class<? extends BeanDefinitionReader> readerClass = importResource.getClass("reader");
 			for (String resource : resources) {
 				String resolvedResource = this.environment.resolveRequiredPlaceholders(resource);

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

@@ -955,7 +955,7 @@ public class ConfigurationClassPostProcessorTests {
 	@ComponentScan(basePackages = "org.springframework.context.annotation.componentscan.simple")
 	@Retention(RetentionPolicy.RUNTIME)
 	@Target(ElementType.TYPE)
-	public static @interface ComposedConfiguration {
+	public @interface ComposedConfiguration {
 	}
 
 	@ComposedConfiguration
@@ -966,7 +966,7 @@ public class ConfigurationClassPostProcessorTests {
 	@ComponentScan
 	@Retention(RetentionPolicy.RUNTIME)
 	@Target(ElementType.TYPE)
-	public static @interface ComposedConfigurationWithAttributeOverrides {
+	public @interface ComposedConfigurationWithAttributeOverrides {
 
 		String[] basePackages() default {};
 
@@ -985,7 +985,7 @@ public class ConfigurationClassPostProcessorTests {
 	@ComposedConfigurationWithAttributeOverrides
 	@Retention(RetentionPolicy.RUNTIME)
 	@Target(ElementType.TYPE)
-	public static @interface ComposedComposedConfigurationWithAttributeOverrides {
+	public @interface ComposedComposedConfigurationWithAttributeOverrides {
 
 		String[] basePackages() default {};
 	}
@@ -997,14 +997,14 @@ public class ConfigurationClassPostProcessorTests {
 	@ComponentScan
 	@Retention(RetentionPolicy.RUNTIME)
 	@Target(ElementType.TYPE)
-	public static @interface MetaComponentScan {
+	public @interface MetaComponentScan {
 	}
 
 	@MetaComponentScan
 	@Configuration
 	@Retention(RetentionPolicy.RUNTIME)
 	@Target(ElementType.TYPE)
-	public static @interface MetaComponentScanConfigurationWithAttributeOverrides {
+	public @interface MetaComponentScanConfigurationWithAttributeOverrides {
 
 		String[] basePackages() default {};
 	}

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * Copyright 2002-2016 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.
@@ -35,13 +35,13 @@ import org.springframework.util.ObjectUtils;
  * @param <S> the type of source supported by this extractor
  * @see Annotation
  * @see AliasFor
- * @see AnnotationUtils#synthesizeAnnotation(Annotation, AnnotatedElement)
+ * @see AnnotationUtils#synthesizeAnnotation(Annotation, Object)
  */
 abstract class AbstractAliasAwareAnnotationAttributeExtractor<S> implements AnnotationAttributeExtractor<S> {
 
 	private final Class<? extends Annotation> annotationType;
 
-	private final AnnotatedElement annotatedElement;
+	private final Object annotatedElement;
 
 	private final S source;
 
@@ -56,7 +56,7 @@ abstract class AbstractAliasAwareAnnotationAttributeExtractor<S> implements Anno
 	 * @param source the underlying source of annotation attributes; never {@code null}
 	 */
 	AbstractAliasAwareAnnotationAttributeExtractor(
-			Class<? extends Annotation> annotationType, AnnotatedElement annotatedElement, S source) {
+			Class<? extends Annotation> annotationType, Object annotatedElement, S source) {
 
 		Assert.notNull(annotationType, "annotationType must not be null");
 		Assert.notNull(source, "source must not be null");
@@ -73,7 +73,7 @@ abstract class AbstractAliasAwareAnnotationAttributeExtractor<S> implements Anno
 	}
 
 	@Override
-	public final AnnotatedElement getAnnotatedElement() {
+	public final Object getAnnotatedElement() {
 		return this.annotatedElement;
 	}
 
@@ -89,18 +89,18 @@ abstract class AbstractAliasAwareAnnotationAttributeExtractor<S> implements Anno
 
 		List<String> aliasNames = this.attributeAliasMap.get(attributeName);
 		if (aliasNames != null) {
-			Object defaultValue = AnnotationUtils.getDefaultValue(getAnnotationType(), attributeName);
+			Object defaultValue = AnnotationUtils.getDefaultValue(this.annotationType, attributeName);
 			for (String aliasName : aliasNames) {
 				Object aliasValue = getRawAttributeValue(aliasName);
 
 				if (!ObjectUtils.nullSafeEquals(attributeValue, aliasValue) &&
 						!ObjectUtils.nullSafeEquals(attributeValue, defaultValue) &&
 						!ObjectUtils.nullSafeEquals(aliasValue, defaultValue)) {
-					String elementName = (getAnnotatedElement() != null ? getAnnotatedElement().toString() : "unknown element");
+					String elementName = (this.annotatedElement != null ? this.annotatedElement.toString() : "unknown element");
 					throw new AnnotationConfigurationException(String.format(
 							"In annotation [%s] declared on %s and synthesized from [%s], attribute '%s' and its " +
 							"alias '%s' are present with values of [%s] and [%s], but only one is permitted.",
-							getAnnotationType().getName(), elementName, getSource(), attributeName, aliasName,
+							this.annotationType.getName(), elementName, this.source, attributeName, aliasName,
 							ObjectUtils.nullSafeToString(attributeValue), ObjectUtils.nullSafeToString(aliasValue)));
 				}
 

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * Copyright 2002-2016 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.
@@ -17,7 +17,6 @@
 package org.springframework.core.annotation;
 
 import java.lang.annotation.Annotation;
-import java.lang.reflect.AnnotatedElement;
 import java.lang.reflect.Method;
 
 /**
@@ -44,7 +43,7 @@ interface AnnotationAttributeExtractor<S> {
 	 * type supported by this extractor.
 	 * @return the annotated element, or {@code null} if unknown
 	 */
-	AnnotatedElement getAnnotatedElement();
+	Object getAnnotatedElement();
 
 	/**
 	 * Get the underlying source of annotation attributes.

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

@@ -50,30 +50,21 @@ import org.springframework.util.StringUtils;
 @SuppressWarnings("serial")
 public class AnnotationAttributes extends LinkedHashMap<String, Object> {
 
-	private final Class<? extends Annotation> annotationType;
+	private static final String UNKNOWN = "unknown";
+
+	private Class<? extends Annotation> annotationType;
 
 	private final String displayName;
 
+	boolean validated = false;
+
 
 	/**
 	 * Create a new, empty {@link AnnotationAttributes} instance.
 	 */
 	public AnnotationAttributes() {
 		this.annotationType = null;
-		this.displayName = "unknown";
+		this.displayName = UNKNOWN;
-	}
-
-	/**
-	 * Create a new, empty {@link AnnotationAttributes} instance for the
-	 * specified {@code annotationType}.
-	 * @param annotationType the type of annotation represented by this
-	 * {@code AnnotationAttributes} instance; never {@code null}
-	 * @since 4.2
-	 */
-	public AnnotationAttributes(Class<? extends Annotation> annotationType) {
-		Assert.notNull(annotationType, "annotationType must not be null");
-		this.annotationType = annotationType;
-		this.displayName = annotationType.getName();
 	}
 
 	/**
@@ -84,20 +75,68 @@ public class AnnotationAttributes extends LinkedHashMap<String, Object> {
 	public AnnotationAttributes(int initialCapacity) {
 		super(initialCapacity);
 		this.annotationType = null;
-		this.displayName = "unknown";
+		this.displayName = UNKNOWN;
 	}
 
 	/**
-	 * Create a new {@link AnnotationAttributes} instance, wrapping the
+	 * Create a new, empty {@link AnnotationAttributes} instance for the
-	 * provided map and all its <em>key-value</em> pairs.
+	 * specified {@code annotationType}.
-	 * @param map original source of annotation attribute <em>key-value</em>
+	 * @param annotationType the type of annotation represented by this
-	 * pairs
+	 * {@code AnnotationAttributes} instance; never {@code null}
+	 * @since 4.2
+	 */
+	public AnnotationAttributes(Class<? extends Annotation> annotationType) {
+		Assert.notNull(annotationType, "'annotationType' must not be null");
+		this.annotationType = annotationType;
+		this.displayName = annotationType.getName();
+	}
+
+	/**
+	 * Create a new, empty {@link AnnotationAttributes} instance for the
+	 * specified {@code annotationType}.
+	 * @param annotationType the type of annotation represented by this
+	 * {@code AnnotationAttributes} instance; never {@code null}
+	 * @param classLoader the ClassLoader to try to load the annotation type on,
+	 * or {@code null} to just store the annotation type name
+	 * @since 4.3.2
+	 */
+	@SuppressWarnings("unchecked")
+	public AnnotationAttributes(String annotationType, ClassLoader classLoader) {
+		Assert.notNull(annotationType, "'annotationType' must not be null");
+		if (classLoader != null) {
+			try {
+				this.annotationType = (Class<? extends Annotation>) classLoader.loadClass(annotationType);
+			}
+			catch (ClassNotFoundException ex) {
+				// Annotation Class not resolvable
+			}
+		}
+		this.displayName = annotationType;
+	}
+
+	/**
+	 * Create a new {@link AnnotationAttributes} instance, wrapping the provided
+	 * map and all its <em>key-value</em> pairs.
+	 * @param map original source of annotation attribute <em>key-value</em> pairs
 	 * @see #fromMap(Map)
 	 */
 	public AnnotationAttributes(Map<String, Object> map) {
 		super(map);
 		this.annotationType = null;
-		this.displayName = "unknown";
+		this.displayName = UNKNOWN;
+	}
+
+	/**
+	 * Create a new {@link AnnotationAttributes} instance, wrapping the provided
+	 * map and all its <em>key-value</em> pairs.
+	 * @param other original source of annotation attribute <em>key-value</em> pairs
+	 * @see #fromMap(Map)
+	 */
+	public AnnotationAttributes(AnnotationAttributes other) {
+		super(other);
+		this.annotationType = other.annotationType;
+		this.displayName = other.displayName;
+		this.validated = other.validated;
 	}
 
 
@@ -124,34 +163,6 @@ public class AnnotationAttributes extends LinkedHashMap<String, Object> {
 		return getRequiredAttribute(attributeName, String.class);
 	}
 
-	/**
-	 * Get the value stored under the specified {@code attributeName} as a
-	 * string, taking into account alias semantics defined via
-	 * {@link AliasFor @AliasFor}.
-	 * <p>If there is no value stored under the specified {@code attributeName}
-	 * but the attribute has an alias declared via {@code @AliasFor}, the
-	 * value of the alias will be returned.
-	 * @param attributeName the name of the attribute to get; never
-	 * {@code null} or empty
-	 * @param annotationType the type of annotation represented by this
-	 * {@code AnnotationAttributes} instance; never {@code null}
-	 * @param annotationSource the source of the annotation represented by
-	 * this {@code AnnotationAttributes} (e.g., the {@link AnnotatedElement});
-	 * or {@code null} if unknown
-	 * @return the string value
-	 * @throws IllegalArgumentException if the attribute and its alias do
-	 * not exist or are not of type {@code String}
-	 * @throws AnnotationConfigurationException if the attribute and its
-	 * alias are both present with different non-empty values
-	 * @since 4.2
-	 * @see ObjectUtils#isEmpty(Object)
-	 */
-	public String getAliasedString(String attributeName, Class<? extends Annotation> annotationType,
-			Object annotationSource) {
-
-		return getRequiredAttributeWithAlias(attributeName, annotationType, annotationSource, String.class);
-	}
-
 	/**
 	 * Get the value stored under the specified {@code attributeName} as an
 	 * array of strings.
@@ -168,33 +179,6 @@ public class AnnotationAttributes extends LinkedHashMap<String, Object> {
 		return getRequiredAttribute(attributeName, String[].class);
 	}
 
-	/**
-	 * Get the value stored under the specified {@code attributeName} as an
-	 * array of strings, taking into account alias semantics defined via
-	 * {@link AliasFor @AliasFor}.
-	 * <p>If there is no value stored under the specified {@code attributeName}
-	 * but the attribute has an alias declared via {@code @AliasFor}, the
-	 * value of the alias will be returned.
-	 * @param attributeName the name of the attribute to get; never
-	 * {@code null} or empty
-	 * @param annotationType the type of annotation represented by this
-	 * {@code AnnotationAttributes} instance; never {@code null}
-	 * @param annotationSource the source of the annotation represented by
-	 * this {@code AnnotationAttributes} (e.g., the {@link AnnotatedElement});
-	 * or {@code null} if unknown
-	 * @return the array of strings
-	 * @throws IllegalArgumentException if the attribute and its alias do
-	 * not exist or are not of type {@code String[]}
-	 * @throws AnnotationConfigurationException if the attribute and its
-	 * alias are both present with different non-empty values
-	 * @since 4.2
-	 */
-	public String[] getAliasedStringArray(String attributeName, Class<? extends Annotation> annotationType,
-			Object annotationSource) {
-
-		return getRequiredAttributeWithAlias(attributeName, annotationType, annotationSource, String[].class);
-	}
-
 	/**
 	 * Get the value stored under the specified {@code attributeName} as a
 	 * boolean.
@@ -266,33 +250,6 @@ public class AnnotationAttributes extends LinkedHashMap<String, Object> {
 		return getRequiredAttribute(attributeName, Class[].class);
 	}
 
-	/**
-	 * Get the value stored under the specified {@code attributeName} as an
-	 * array of classes, taking into account alias semantics defined via
-	 * {@link AliasFor @AliasFor}.
-	 * <p>If there is no value stored under the specified {@code attributeName}
-	 * but the attribute has an alias declared via {@code @AliasFor}, the
-	 * value of the alias will be returned.
-	 * @param attributeName the name of the attribute to get; never
-	 * {@code null} or empty
-	 * @param annotationType the type of annotation represented by this
-	 * {@code AnnotationAttributes} instance; never {@code null}
-	 * @param annotationSource the source of the annotation represented by
-	 * this {@code AnnotationAttributes} (e.g., the {@link AnnotatedElement});
-	 * or {@code null} if unknown
-	 * @return the array of classes
-	 * @throws IllegalArgumentException if the attribute and its alias do
-	 * not exist or are not of type {@code Class[]}
-	 * @throws AnnotationConfigurationException if the attribute and its
-	 * alias are both present with different non-empty values
-	 * @since 4.2
-	 */
-	public Class<?>[] getAliasedClassArray(String attributeName, Class<? extends Annotation> annotationType,
-			Object annotationSource) {
-
-		return getRequiredAttributeWithAlias(attributeName, annotationType, annotationSource, Class[].class);
-	}
-
 	/**
 	 * Get the {@link AnnotationAttributes} stored under the specified
 	 * {@code attributeName}.
@@ -378,7 +335,7 @@ public class AnnotationAttributes extends LinkedHashMap<String, Object> {
 	 */
 	@SuppressWarnings("unchecked")
 	private <T> T getRequiredAttribute(String attributeName, Class<T> expectedType) {
-		Assert.hasText(attributeName, "attributeName must not be null or empty");
+		Assert.hasText(attributeName, "'attributeName' must not be null or empty");
 		Object value = get(attributeName);
 		assertAttributePresence(attributeName, value);
 		assertNotException(attributeName, value);
@@ -418,9 +375,9 @@ public class AnnotationAttributes extends LinkedHashMap<String, Object> {
 	private <T> T getRequiredAttributeWithAlias(String attributeName, Class<? extends Annotation> annotationType,
 			Object annotationSource, Class<T> expectedType) {
 
-		Assert.hasText(attributeName, "attributeName must not be null or empty");
+		Assert.hasText(attributeName, "'attributeName' must not be null or empty");
-		Assert.notNull(annotationType, "annotationType must not be null");
+		Assert.notNull(annotationType, "'annotationType' must not be null");
-		Assert.notNull(expectedType, "expectedType must not be null");
+		Assert.notNull(expectedType, "'expectedType' must not be null");
 
 		T attributeValue = getAttribute(attributeName, expectedType);
 
@@ -433,8 +390,8 @@ public class AnnotationAttributes extends LinkedHashMap<String, Object> {
 
 				if (!attributeEmpty && !aliasEmpty && !ObjectUtils.nullSafeEquals(attributeValue, aliasValue)) {
 					String elementName = (annotationSource == null ? "unknown element" : annotationSource.toString());
-					String msg = String.format("In annotation [%s] declared on [%s], attribute [%s] and its alias [%s] " +
+					String msg = String.format("In annotation [%s] declared on [%s], attribute [%s] and its " +
-							"are present with values of [%s] and [%s], but only one is permitted.",
+							"alias [%s] are present with values of [%s] and [%s], but only one is permitted.",
 							annotationType.getName(), elementName, attributeName, aliasName,
 							ObjectUtils.nullSafeToString(attributeValue), ObjectUtils.nullSafeToString(aliasValue));
 					throw new AnnotationConfigurationException(msg);

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

@@ -23,6 +23,7 @@ import java.lang.reflect.Array;
 import java.lang.reflect.InvocationHandler;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
 import java.lang.reflect.Proxy;
 import java.util.ArrayList;
 import java.util.Collections;
@@ -590,7 +591,7 @@ public abstract class AnnotationUtils {
 	static boolean isInterfaceWithAnnotatedMethods(Class<?> iface) {
 		Boolean found = annotatedInterfaceCache.get(iface);
 		if (found != null) {
-			return found.booleanValue();
+			return found;
 		}
 		found = Boolean.FALSE;
 		for (Method ifcMethod : iface.getMethods()) {
@@ -605,7 +606,7 @@ public abstract class AnnotationUtils {
 			}
 		}
 		annotatedInterfaceCache.put(iface, found);
-		return found.booleanValue();
+		return found;
 	}
 
 	/**
@@ -857,14 +858,14 @@ public abstract class AnnotationUtils {
 		AnnotationCacheKey cacheKey = new AnnotationCacheKey(annotationType, metaAnnotationType);
 		Boolean metaPresent = metaPresentCache.get(cacheKey);
 		if (metaPresent != null) {
-			return metaPresent.booleanValue();
+			return metaPresent;
 		}
 		metaPresent = Boolean.FALSE;
 		if (findAnnotation(annotationType, metaAnnotationType, false) != null) {
 			metaPresent = Boolean.TRUE;
 		}
 		metaPresentCache.put(cacheKey, metaPresent);
-		return metaPresent.booleanValue();
+		return metaPresent;
 	}
 
 	/**
@@ -987,6 +988,13 @@ public abstract class AnnotationUtils {
 	public static AnnotationAttributes getAnnotationAttributes(AnnotatedElement annotatedElement,
 			Annotation annotation, boolean classValuesAsString, boolean nestedAnnotationsAsMap) {
 
+		return getAnnotationAttributes(
+				(Object) annotatedElement, annotation, classValuesAsString, nestedAnnotationsAsMap);
+	}
+
+	private static AnnotationAttributes getAnnotationAttributes(Object annotatedElement,
+			Annotation annotation, boolean classValuesAsString, boolean nestedAnnotationsAsMap) {
+
 		AnnotationAttributes attributes =
 				retrieveAnnotationAttributes(annotatedElement, annotation, classValuesAsString, nestedAnnotationsAsMap);
 		postProcessAnnotationAttributes(annotatedElement, attributes, classValuesAsString, nestedAnnotationsAsMap);
@@ -1021,7 +1029,7 @@ public abstract class AnnotationUtils {
 	 * @since 4.2
 	 * @see #postProcessAnnotationAttributes
 	 */
-	static AnnotationAttributes retrieveAnnotationAttributes(AnnotatedElement annotatedElement, Annotation annotation,
+	static AnnotationAttributes retrieveAnnotationAttributes(Object annotatedElement, Annotation annotation,
 			boolean classValuesAsString, boolean nestedAnnotationsAsMap) {
 
 		Class<? extends Annotation> annotationType = annotation.annotationType();
@@ -1065,14 +1073,14 @@ public abstract class AnnotationUtils {
 	 * {@code Annotation} instances
 	 * @return the adapted value, or the original value if no adaptation is needed
 	 */
-	static Object adaptValue(AnnotatedElement annotatedElement, Object value, boolean classValuesAsString,
+	static Object adaptValue(Object annotatedElement, Object value, boolean classValuesAsString,
 			boolean nestedAnnotationsAsMap) {
 
 		if (classValuesAsString) {
-			if (value instanceof Class) {
+			if (value instanceof Class<?>) {
 				return ((Class<?>) value).getName();
 			}
-			else if (value instanceof Class[]) {
+			else if (value instanceof Class<?>[]) {
 				Class<?>[] clazzArray = (Class<?>[]) value;
 				String[] classNames = new String[clazzArray.length];
 				for (int i = 0; i < clazzArray.length; i++) {
@@ -1111,6 +1119,64 @@ public abstract class AnnotationUtils {
 		return value;
 	}
 
+	/**
+	 * Register the annotation-declared default values for the given attributes,
+	 * if available.
+	 * @param attributes the annotation attributes to process
+	 * @since 4.3.2
+	 */
+	public static void registerDefaultValues(AnnotationAttributes attributes) {
+		// Only do defaults scanning for public annotations; we'd run into
+		// IllegalAccessExceptions otherwise, and we don't want to mess with
+		// accessibility in a SecurityManager environment.
+		Class<?> annotationType = attributes.annotationType();
+		if (annotationType != null && Modifier.isPublic(annotationType.getModifiers())) {
+			// Check declared default values of attributes in the annotation type.
+			Method[] annotationAttributes = annotationType.getMethods();
+			for (Method annotationAttribute : annotationAttributes) {
+				String attributeName = annotationAttribute.getName();
+				Object defaultValue = annotationAttribute.getDefaultValue();
+				if (defaultValue != null && !attributes.containsKey(attributeName)) {
+					if (defaultValue instanceof Annotation) {
+						defaultValue = getAnnotationAttributes((Annotation) defaultValue, false, true);
+					}
+					else if (defaultValue instanceof Annotation[]) {
+						Annotation[] realAnnotations = (Annotation[]) defaultValue;
+						AnnotationAttributes[] mappedAnnotations = new AnnotationAttributes[realAnnotations.length];
+						for (int i = 0; i < realAnnotations.length; i++) {
+							mappedAnnotations[i] = getAnnotationAttributes(realAnnotations[i], false, true);
+						}
+						defaultValue = mappedAnnotations;
+					}
+					attributes.put(attributeName, new DefaultValueHolder(defaultValue));
+				}
+			}
+		}
+	}
+
+	/**
+	 * Post-process the supplied {@link AnnotationAttributes}, preserving nested
+	 * annotations as {@code Annotation} instances.
+	 * <p>Specifically, this method enforces <em>attribute alias</em> semantics
+	 * for annotation attributes that are annotated with {@link AliasFor @AliasFor}
+	 * and replaces default value placeholders with their original default values.
+	 * @param annotatedElement the element that is annotated with an annotation or
+	 * annotation hierarchy from which the supplied attributes were created;
+	 * may be {@code null} if unknown
+	 * @param attributes the annotation attributes to post-process
+	 * @param classValuesAsString whether to convert Class references into Strings (for
+	 * compatibility with {@link org.springframework.core.type.AnnotationMetadata})
+	 * or to preserve them as Class references
+	 * @since 4.3.2
+	 * @see #postProcessAnnotationAttributes(Object, AnnotationAttributes, boolean, boolean)
+	 * @see #getDefaultValue(Class, String)
+	 */
+	public static void postProcessAnnotationAttributes(Object annotatedElement,
+			AnnotationAttributes attributes, boolean classValuesAsString) {
+
+		postProcessAnnotationAttributes(annotatedElement, attributes, classValuesAsString, false);
+	}
+
 	/**
 	 * Post-process the supplied {@link AnnotationAttributes}.
 	 * <p>Specifically, this method enforces <em>attribute alias</em> semantics
@@ -1128,10 +1194,10 @@ public abstract class AnnotationUtils {
 	 * {@link org.springframework.core.type.AnnotationMetadata}) or to preserve them as
 	 * {@code Annotation} instances
 	 * @since 4.2
-	 * @see #retrieveAnnotationAttributes(AnnotatedElement, Annotation, boolean, boolean)
+	 * @see #retrieveAnnotationAttributes(Object, Annotation, boolean, boolean)
 	 * @see #getDefaultValue(Class, String)
 	 */
-	static void postProcessAnnotationAttributes(AnnotatedElement annotatedElement,
+	static void postProcessAnnotationAttributes(Object annotatedElement,
 			AnnotationAttributes attributes, boolean classValuesAsString, boolean nestedAnnotationsAsMap) {
 
 		// Abort?
@@ -1145,51 +1211,55 @@ public abstract class AnnotationUtils {
 		// circuit the search algorithms.
 		Set<String> valuesAlreadyReplaced = new HashSet<>();
 
-		// Validate @AliasFor configuration
+		if (!attributes.validated) {
-		Map<String, List<String>> aliasMap = getAttributeAliasMap(annotationType);
+			// Validate @AliasFor configuration
-		for (String attributeName : aliasMap.keySet()) {
+			Map<String, List<String>> aliasMap = getAttributeAliasMap(annotationType);
-			if (valuesAlreadyReplaced.contains(attributeName)) {
+			for (String attributeName : aliasMap.keySet()) {
-				continue;
+				if (valuesAlreadyReplaced.contains(attributeName)) {
-			}
-			Object value = attributes.get(attributeName);
-			boolean valuePresent = (value != null && !(value instanceof DefaultValueHolder));
-
-			for (String aliasedAttributeName : aliasMap.get(attributeName)) {
-				if (valuesAlreadyReplaced.contains(aliasedAttributeName)) {
 					continue;
 				}
+				Object value = attributes.get(attributeName);
+				boolean valuePresent = (value != null && !(value instanceof DefaultValueHolder));
 
-				Object aliasedValue = attributes.get(aliasedAttributeName);
+				for (String aliasedAttributeName : aliasMap.get(attributeName)) {
-				boolean aliasPresent = (aliasedValue != null && !(aliasedValue instanceof DefaultValueHolder));
+					if (valuesAlreadyReplaced.contains(aliasedAttributeName)) {
+						continue;
+					}
 
-				// Something to validate or replace with an alias?
+					Object aliasedValue = attributes.get(aliasedAttributeName);
-				if (valuePresent || aliasPresent) {
+					boolean aliasPresent = (aliasedValue != null && !(aliasedValue instanceof DefaultValueHolder));
-					if (valuePresent && aliasPresent) {
+
-						// Since annotation attributes can be arrays, we must use ObjectUtils.nullSafeEquals().
+					// Something to validate or replace with an alias?
-						if (!ObjectUtils.nullSafeEquals(value, aliasedValue)) {
+					if (valuePresent || aliasPresent) {
-							String elementAsString = (annotatedElement != null ? annotatedElement.toString() : "unknown element");
+						if (valuePresent && aliasPresent) {
-							throw new AnnotationConfigurationException(String.format(
+							// Since annotation attributes can be arrays, we must use ObjectUtils.nullSafeEquals().
-									"In AnnotationAttributes for annotation [%s] declared on %s, " +
+							if (!ObjectUtils.nullSafeEquals(value, aliasedValue)) {
-											"attribute '%s' and its alias '%s' are declared with values of [%s] and [%s], " +
+								String elementAsString =
-											"but only one is permitted.", annotationType.getName(), elementAsString,
+										(annotatedElement != null ? annotatedElement.toString() : "unknown element");
-									attributeName, aliasedAttributeName, ObjectUtils.nullSafeToString(value),
+								throw new AnnotationConfigurationException(String.format(
-									ObjectUtils.nullSafeToString(aliasedValue)));
+										"In AnnotationAttributes for annotation [%s] declared on %s, " +
+												"attribute '%s' and its alias '%s' are declared with values of [%s] and [%s], " +
+												"but only one is permitted.", annotationType.getName(), elementAsString,
+										attributeName, aliasedAttributeName, ObjectUtils.nullSafeToString(value),
+										ObjectUtils.nullSafeToString(aliasedValue)));
+							}
+						}
+						else if (aliasPresent) {
+							// Replace value with aliasedValue
+							attributes.put(attributeName,
+									adaptValue(annotatedElement, aliasedValue, classValuesAsString, nestedAnnotationsAsMap));
+							valuesAlreadyReplaced.add(attributeName);
+						}
+						else {
+							// Replace aliasedValue with value
+							attributes.put(aliasedAttributeName,
+									adaptValue(annotatedElement, value, classValuesAsString, nestedAnnotationsAsMap));
+							valuesAlreadyReplaced.add(aliasedAttributeName);
 						}
-					}
-					else if (aliasPresent) {
-						// Replace value with aliasedValue
-						attributes.put(attributeName,
-								adaptValue(annotatedElement, aliasedValue, classValuesAsString, nestedAnnotationsAsMap));
-						valuesAlreadyReplaced.add(attributeName);
-					}
-					else {
-						// Replace aliasedValue with value
-						attributes.put(aliasedAttributeName,
-								adaptValue(annotatedElement, value, classValuesAsString, nestedAnnotationsAsMap));
-						valuesAlreadyReplaced.add(aliasedAttributeName);
 					}
 				}
 			}
+			attributes.validated = true;
 		}
 
 		// Replace any remaining placeholders with actual default values
@@ -1329,8 +1399,12 @@ public abstract class AnnotationUtils {
 	 * @see #synthesizeAnnotation(Map, Class, AnnotatedElement)
 	 * @see #synthesizeAnnotation(Class)
 	 */
-	@SuppressWarnings("unchecked")
 	public static <A extends Annotation> A synthesizeAnnotation(A annotation, AnnotatedElement annotatedElement) {
+		return synthesizeAnnotation(annotation, (Object) annotatedElement);
+	}
+
+	@SuppressWarnings("unchecked")
+	static <A extends Annotation> A synthesizeAnnotation(A annotation, Object annotatedElement) {
 		if (annotation == null) {
 			return null;
 		}
@@ -1435,7 +1509,7 @@ public abstract class AnnotationUtils {
 	 * @see #synthesizeAnnotation(Annotation, AnnotatedElement)
 	 * @see #synthesizeAnnotation(Map, Class, AnnotatedElement)
 	 */
-	public static Annotation[] synthesizeAnnotationArray(Annotation[] annotations, AnnotatedElement annotatedElement) {
+	static Annotation[] synthesizeAnnotationArray(Annotation[] annotations, Object annotatedElement) {
 		if (annotations == null) {
 			return null;
 		}
@@ -1463,7 +1537,7 @@ public abstract class AnnotationUtils {
 	 * {@code @AliasFor} is detected
 	 * @since 4.2.1
 	 * @see #synthesizeAnnotation(Map, Class, AnnotatedElement)
-	 * @see #synthesizeAnnotationArray(Annotation[], AnnotatedElement)
+	 * @see #synthesizeAnnotationArray(Annotation[], Object)
 	 */
 	@SuppressWarnings("unchecked")
 	static <A extends Annotation> A[] synthesizeAnnotationArray(Map<String, Object>[] maps, Class<A> annotationType) {
@@ -1551,7 +1625,7 @@ public abstract class AnnotationUtils {
 	private static boolean isSynthesizable(Class<? extends Annotation> annotationType) {
 		Boolean synthesizable = synthesizableCache.get(annotationType);
 		if (synthesizable != null) {
-			return synthesizable.booleanValue();
+			return synthesizable;
 		}
 
 		synthesizable = Boolean.FALSE;
@@ -1579,7 +1653,7 @@ public abstract class AnnotationUtils {
 		}
 
 		synthesizableCache.put(annotationType, synthesizable);
-		return synthesizable.booleanValue();
+		return synthesizable;
 	}
 
 	/**

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

@@ -17,7 +17,6 @@
 package org.springframework.core.annotation;
 
 import java.lang.annotation.Annotation;
-import java.lang.reflect.AnnotatedElement;
 import java.lang.reflect.Method;
 
 import org.springframework.util.ReflectionUtils;
@@ -32,7 +31,7 @@ import org.springframework.util.ReflectionUtils;
  * @see AliasFor
  * @see AbstractAliasAwareAnnotationAttributeExtractor
  * @see MapAnnotationAttributeExtractor
- * @see AnnotationUtils#synthesizeAnnotation(Annotation, AnnotatedElement)
+ * @see AnnotationUtils#synthesizeAnnotation
  */
 class DefaultAnnotationAttributeExtractor extends AbstractAliasAwareAnnotationAttributeExtractor<Annotation> {
 
@@ -42,7 +41,7 @@ class DefaultAnnotationAttributeExtractor extends AbstractAliasAwareAnnotationAt
 	 * @param annotatedElement the element that is annotated with the supplied
 	 * annotation; may be {@code null} if unknown
 	 */
-	DefaultAnnotationAttributeExtractor(Annotation annotation, AnnotatedElement annotatedElement) {
+	DefaultAnnotationAttributeExtractor(Annotation annotation, Object annotatedElement) {
 		super(annotation.annotationType(), annotatedElement, annotation);
 	}
 

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

@@ -27,8 +27,6 @@ import java.util.Map;
 import org.springframework.util.Assert;
 import org.springframework.util.ClassUtils;
 
-import static org.springframework.core.annotation.AnnotationUtils.*;
-
 /**
  * Implementation of the {@link AnnotationAttributeExtractor} strategy that
  * is backed by a {@link Map}.
@@ -90,9 +88,9 @@ class MapAnnotationAttributeExtractor extends AbstractAliasAwareAnnotationAttrib
 			Map<String, Object> originalAttributes, Class<? extends Annotation> annotationType) {
 
 		Map<String, Object> attributes = new LinkedHashMap<>(originalAttributes);
-		Map<String, List<String>> attributeAliasMap = getAttributeAliasMap(annotationType);
+		Map<String, List<String>> attributeAliasMap = AnnotationUtils.getAttributeAliasMap(annotationType);
 
-		for (Method attributeMethod : getAttributeMethods(annotationType)) {
+		for (Method attributeMethod : AnnotationUtils.getAttributeMethods(annotationType)) {
 			String attributeName = attributeMethod.getName();
 			Object attributeValue = attributes.get(attributeName);
 
@@ -113,7 +111,7 @@ class MapAnnotationAttributeExtractor extends AbstractAliasAwareAnnotationAttrib
 
 			// if aliases not present, check default
 			if (attributeValue == null) {
-				Object defaultValue = getDefaultValue(annotationType, attributeName);
+				Object defaultValue = AnnotationUtils.getDefaultValue(annotationType, attributeName);
 				if (defaultValue != null) {
 					attributeValue = defaultValue;
 					attributes.put(attributeName, attributeValue);
@@ -146,7 +144,7 @@ class MapAnnotationAttributeExtractor extends AbstractAliasAwareAnnotationAttrib
 					Class<? extends Annotation> nestedAnnotationType =
 							(Class<? extends Annotation>) requiredReturnType;
 					Map<String, Object> map = (Map<String, Object>) attributeValue;
-					attributes.put(attributeName, synthesizeAnnotation(map, nestedAnnotationType, null));
+					attributes.put(attributeName, AnnotationUtils.synthesizeAnnotation(map, nestedAnnotationType, null));
 					converted = true;
 				}
 
@@ -157,7 +155,7 @@ class MapAnnotationAttributeExtractor extends AbstractAliasAwareAnnotationAttrib
 					Class<? extends Annotation> nestedAnnotationType =
 							(Class<? extends Annotation>) requiredReturnType.getComponentType();
 					Map<String, Object>[] maps = (Map<String, Object>[]) attributeValue;
-					attributes.put(attributeName, synthesizeAnnotationArray(maps, nestedAnnotationType));
+					attributes.put(attributeName, AnnotationUtils.synthesizeAnnotationArray(maps, nestedAnnotationType));
 					converted = true;
 				}
 

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

@@ -27,11 +27,9 @@ import java.util.concurrent.ConcurrentHashMap;
 
 import org.springframework.util.Assert;
 import org.springframework.util.ObjectUtils;
+import org.springframework.util.ReflectionUtils;
 import org.springframework.util.StringUtils;
 
-import static org.springframework.core.annotation.AnnotationUtils.*;
-import static org.springframework.util.ReflectionUtils.*;
-
 /**
  * {@link InvocationHandler} for an {@link Annotation} that Spring has
  * <em>synthesized</em> (i.e., wrapped in a dynamic proxy) with additional
@@ -63,22 +61,21 @@ class SynthesizedAnnotationInvocationHandler implements InvocationHandler {
 
 	@Override
 	public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
-		if (isEqualsMethod(method)) {
+		if (ReflectionUtils.isEqualsMethod(method)) {
 			return annotationEquals(args[0]);
 		}
-		if (isHashCodeMethod(method)) {
+		if (ReflectionUtils.isHashCodeMethod(method)) {
 			return annotationHashCode();
 		}
-		if (isToStringMethod(method)) {
+		if (ReflectionUtils.isToStringMethod(method)) {
 			return annotationToString();
 		}
-		if (isAnnotationTypeMethod(method)) {
+		if (AnnotationUtils.isAnnotationTypeMethod(method)) {
 			return annotationType();
 		}
-		if (!isAttributeMethod(method)) {
+		if (!AnnotationUtils.isAttributeMethod(method)) {
-			String msg = String.format("Method [%s] is unsupported for synthesized annotation type [%s]",
+			throw new AnnotationConfigurationException(String.format(
-					method, annotationType());
+					"Method [%s] is unsupported for synthesized annotation type [%s]", method, annotationType()));
-			throw new AnnotationConfigurationException(msg);
 		}
 		return getAttributeValue(method);
 	}
@@ -100,10 +97,10 @@ class SynthesizedAnnotationInvocationHandler implements InvocationHandler {
 
 			// Synthesize nested annotations before returning them.
 			if (value instanceof Annotation) {
-				value = synthesizeAnnotation((Annotation) value, this.attributeExtractor.getAnnotatedElement());
+				value = AnnotationUtils.synthesizeAnnotation((Annotation) value, this.attributeExtractor.getAnnotatedElement());
 			}
 			else if (value instanceof Annotation[]) {
-				value = synthesizeAnnotationArray((Annotation[]) value, this.attributeExtractor.getAnnotatedElement());
+				value = AnnotationUtils.synthesizeAnnotationArray((Annotation[]) value, this.attributeExtractor.getAnnotatedElement());
 			}
 
 			this.valueCache.put(attributeName, value);
@@ -164,9 +161,9 @@ class SynthesizedAnnotationInvocationHandler implements InvocationHandler {
 			return false;
 		}
 
-		for (Method attributeMethod : getAttributeMethods(annotationType())) {
+		for (Method attributeMethod : AnnotationUtils.getAttributeMethods(annotationType())) {
 			Object thisValue = getAttributeValue(attributeMethod);
-			Object otherValue = invokeMethod(attributeMethod, other);
+			Object otherValue = ReflectionUtils.invokeMethod(attributeMethod, other);
 			if (!ObjectUtils.nullSafeEquals(thisValue, otherValue)) {
 				return false;
 			}
@@ -181,7 +178,7 @@ class SynthesizedAnnotationInvocationHandler implements InvocationHandler {
 	private int annotationHashCode() {
 		int result = 0;
 
-		for (Method attributeMethod : getAttributeMethods(annotationType())) {
+		for (Method attributeMethod : AnnotationUtils.getAttributeMethods(annotationType())) {
 			Object value = getAttributeValue(attributeMethod);
 			int hashCode;
 			if (value.getClass().isArray()) {
@@ -239,7 +236,7 @@ class SynthesizedAnnotationInvocationHandler implements InvocationHandler {
 	private String annotationToString() {
 		StringBuilder sb = new StringBuilder("@").append(annotationType().getName()).append("(");
 
-		Iterator<Method> iterator = getAttributeMethods(annotationType()).iterator();
+		Iterator<Method> iterator = AnnotationUtils.getAttributeMethods(annotationType()).iterator();
 		while (iterator.hasNext()) {
 			Method attributeMethod = iterator.next();
 			sb.append(attributeMethod.getName());

spring-core/src/main/java/org/springframework/core/type/classreading/AbstractRecursiveAnnotationVisitor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2014 the original author or authors.
+ * Copyright 2002-2016 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.
@@ -58,7 +58,7 @@ abstract class AbstractRecursiveAnnotationVisitor extends AnnotationVisitor {
 	@Override
 	public AnnotationVisitor visitAnnotation(String attributeName, String asmTypeDescriptor) {
 		String annotationType = Type.getType(asmTypeDescriptor).getClassName();
-		AnnotationAttributes nestedAttributes = new AnnotationAttributes();
+		AnnotationAttributes nestedAttributes = new AnnotationAttributes(annotationType, this.classLoader);
 		this.attributes.put(attributeName, nestedAttributes);
 		return new RecursiveAnnotationAttributesVisitor(annotationType, nestedAttributes, this.classLoader);
 	}

spring-core/src/main/java/org/springframework/core/type/classreading/AnnotationAttributesReadingVisitor.java

@@ -44,8 +44,6 @@ import org.springframework.util.ObjectUtils;
  */
 final class AnnotationAttributesReadingVisitor extends RecursiveAnnotationAttributesVisitor {
 
-	private final String annotationType;
-
 	private final MultiValueMap<String, AnnotationAttributes> attributesMap;
 
 	private final Map<String, Set<String>> metaAnnotationMap;
@@ -55,38 +53,41 @@ final class AnnotationAttributesReadingVisitor extends RecursiveAnnotationAttrib
 			MultiValueMap<String, AnnotationAttributes> attributesMap, Map<String, Set<String>> metaAnnotationMap,
 			ClassLoader classLoader) {
 
-		super(annotationType, new AnnotationAttributes(), classLoader);
+		super(annotationType, new AnnotationAttributes(annotationType, classLoader), classLoader);
-		this.annotationType = annotationType;
 		this.attributesMap = attributesMap;
 		this.metaAnnotationMap = metaAnnotationMap;
 	}
 
 
 	@Override
-	public void doVisitEnd(Class<?> annotationClass) {
+	public void visitEnd() {
-		super.doVisitEnd(annotationClass);
+		super.visitEnd();
-		List<AnnotationAttributes> attributes = this.attributesMap.get(this.annotationType);
+
-		if (attributes == null) {
+		Class<?> annotationClass = this.attributes.annotationType();
-			this.attributesMap.add(this.annotationType, this.attributes);
+		if (annotationClass != null) {
-		}
+			List<AnnotationAttributes> attributeList = this.attributesMap.get(this.annotationType);
-		else {
+			if (attributeList == null) {
-			attributes.add(0, this.attributes);
+				this.attributesMap.add(this.annotationType, this.attributes);
-		}
+			}
-		Set<Annotation> visited = new LinkedHashSet<>();
+			else {
-		Annotation[] metaAnnotations = AnnotationUtils.getAnnotations(annotationClass);
+				attributeList.add(0, this.attributes);
-		if (!ObjectUtils.isEmpty(metaAnnotations)) {
+			}
-			for (Annotation metaAnnotation : metaAnnotations) {
+			Set<Annotation> visited = new LinkedHashSet<>();
-				if (!AnnotationUtils.isInJavaLangAnnotationPackage(metaAnnotation)) {
+			Annotation[] metaAnnotations = AnnotationUtils.getAnnotations(annotationClass);
-					recursivelyCollectMetaAnnotations(visited, metaAnnotation);
+			if (!ObjectUtils.isEmpty(metaAnnotations)) {
+				for (Annotation metaAnnotation : metaAnnotations) {
+					if (!AnnotationUtils.isInJavaLangAnnotationPackage(metaAnnotation)) {
+						recursivelyCollectMetaAnnotations(visited, metaAnnotation);
+					}
 				}
 			}
-		}
+			if (this.metaAnnotationMap != null) {
-		if (this.metaAnnotationMap != null) {
+				Set<String> metaAnnotationTypeNames = new LinkedHashSet<>(visited.size());
-			Set<String> metaAnnotationTypeNames = new LinkedHashSet<>(visited.size());
+				for (Annotation ann : visited) {
-			for (Annotation ann : visited) {
+					metaAnnotationTypeNames.add(ann.annotationType().getName());
-				metaAnnotationTypeNames.add(ann.annotationType().getName());
+				}
+				this.metaAnnotationMap.put(annotationClass.getName(), metaAnnotationTypeNames);
 			}
-			this.metaAnnotationMap.put(annotationClass.getName(), metaAnnotationTypeNames);
 		}
 	}
 

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

@@ -131,7 +131,8 @@ public class AnnotationMetadataReadingVisitor extends ClassMetadataReadingVisito
 	public AnnotationAttributes getAnnotationAttributes(String annotationName, boolean classValuesAsString) {
 		AnnotationAttributes raw = AnnotationReadingVisitorUtils.getMergedAnnotationAttributes(
 				this.attributesMap, this.metaAnnotationMap, annotationName);
-		return AnnotationReadingVisitorUtils.convertClassValues(this.classLoader, raw, classValuesAsString);
+		return AnnotationReadingVisitorUtils.convertClassValues(
+				"class '" + getClassName() + "'", this.classLoader, raw, classValuesAsString);
 	}
 
 	@Override
@@ -148,7 +149,7 @@ public class AnnotationMetadataReadingVisitor extends ClassMetadataReadingVisito
 		}
 		for (AnnotationAttributes raw : attributes) {
 			for (Map.Entry<String, Object> entry : AnnotationReadingVisitorUtils.convertClassValues(
-					this.classLoader, raw, classValuesAsString).entrySet()) {
+					"class '" + getClassName() + "'", this.classLoader, raw, classValuesAsString).entrySet()) {
 				allAttributes.add(entry.getKey(), entry.getValue());
 			}
 		}

spring-core/src/main/java/org/springframework/core/type/classreading/AnnotationReadingVisitorUtils.java

@@ -41,25 +41,29 @@ import org.springframework.util.ObjectUtils;
  */
 abstract class AnnotationReadingVisitorUtils {
 
-	public static AnnotationAttributes convertClassValues(ClassLoader classLoader, AnnotationAttributes original,
+	public static AnnotationAttributes convertClassValues(Object annotatedElement,
-			boolean classValuesAsString) {
+			ClassLoader classLoader, AnnotationAttributes original, boolean classValuesAsString) {
 
 		if (original == null) {
 			return null;
 		}
 
-		AnnotationAttributes result = new AnnotationAttributes(original.size());
+		AnnotationAttributes result = new AnnotationAttributes(original);
-		for (Map.Entry<String, Object> entry : original.entrySet()) {
+		AnnotationUtils.postProcessAnnotationAttributes(annotatedElement, result, classValuesAsString);
+
+		for (Map.Entry<String, Object> entry : result.entrySet()) {
 			try {
 				Object value = entry.getValue();
 				if (value instanceof AnnotationAttributes) {
-					value = convertClassValues(classLoader, (AnnotationAttributes) value, classValuesAsString);
+					value = convertClassValues(
+							annotatedElement, classLoader, (AnnotationAttributes) value, classValuesAsString);
 				}
 				else if (value instanceof AnnotationAttributes[]) {
 					AnnotationAttributes[] values = (AnnotationAttributes[]) value;
 					for (int i = 0; i < values.length; i++) {
-						values[i] = convertClassValues(classLoader, values[i], classValuesAsString);
+						values[i] = convertClassValues(annotatedElement, classLoader, values[i], classValuesAsString);
 					}
+					value = values;
 				}
 				else if (value instanceof Type) {
 					value = (classValuesAsString ? ((Type) value).getClassName() :
@@ -67,7 +71,8 @@ abstract class AnnotationReadingVisitorUtils {
 				}
 				else if (value instanceof Type[]) {
 					Type[] array = (Type[]) value;
-					Object[] convArray = (classValuesAsString ? new String[array.length] : new Class<?>[array.length]);
+					Object[] convArray =
+							(classValuesAsString ? new String[array.length] : new Class<?>[array.length]);
 					for (int i = 0; i < array.length; i++) {
 						convArray[i] = (classValuesAsString ? array[i].getClassName() :
 								classLoader.loadClass(array[i].getClassName()));
@@ -75,11 +80,11 @@ abstract class AnnotationReadingVisitorUtils {
 					value = convArray;
 				}
 				else if (classValuesAsString) {
-					if (value instanceof Class) {
+					if (value instanceof Class<?>) {
 						value = ((Class<?>) value).getName();
 					}
-					else if (value instanceof Class[]) {
+					else if (value instanceof Class<?>[]) {
-						Class<?>[] clazzArray = (Class[]) value;
+						Class<?>[] clazzArray = (Class<?>[]) value;
 						String[] newValue = new String[clazzArray.length];
 						for (int i = 0; i < clazzArray.length; i++) {
 							newValue[i] = clazzArray[i].getName();
@@ -87,13 +92,14 @@ abstract class AnnotationReadingVisitorUtils {
 						value = newValue;
 					}
 				}
-				result.put(entry.getKey(), value);
+				entry.setValue(value);
 			}
 			catch (Exception ex) {
 				// Class not found - can't resolve class reference in annotation attribute.
 				result.put(entry.getKey(), ex);
 			}
 		}
+
 		return result;
 	}
 
@@ -123,13 +129,12 @@ abstract class AnnotationReadingVisitorUtils {
 			return null;
 		}
 
-		// To start with, we populate the results with a copy of all attribute
+		// To start with, we populate the result with a copy of all attribute values
-		// values from the target annotation. A copy is necessary so that we do
+		// from the target annotation. A copy is necessary so that we do not
-		// not inadvertently mutate the state of the metadata passed to this
+		// inadvertently mutate the state of the metadata passed to this method.
-		// method.
+		AnnotationAttributes result = new AnnotationAttributes(attributesList.get(0));
-		AnnotationAttributes results = new AnnotationAttributes(attributesList.get(0));
 
-		Set<String> overridableAttributeNames = new HashSet<>(results.keySet());
+		Set<String> overridableAttributeNames = new HashSet<>(result.keySet());
 		overridableAttributeNames.remove(AnnotationUtils.VALUE);
 
 		// Since the map is a LinkedMultiValueMap, we depend on the ordering of
@@ -152,14 +157,14 @@ abstract class AnnotationReadingVisitorUtils {
 						if (value != null) {
 							// Store the value, potentially overriding a value from an attribute
 							// of the same name found higher in the annotation hierarchy.
-							results.put(overridableAttributeName, value);
+							result.put(overridableAttributeName, value);
 						}
 					}
 				}
 			}
 		}
 
-		return results;
+		return result;
 	}
 
 }

spring-core/src/main/java/org/springframework/core/type/classreading/MethodMetadataReadingVisitor.java

@@ -122,7 +122,8 @@ public class MethodMetadataReadingVisitor extends MethodVisitor implements Metho
 	public AnnotationAttributes getAnnotationAttributes(String annotationName, boolean classValuesAsString) {
 		AnnotationAttributes raw = AnnotationReadingVisitorUtils.getMergedAnnotationAttributes(
 				this.attributesMap, this.metaAnnotationMap, annotationName);
-		return AnnotationReadingVisitorUtils.convertClassValues(this.classLoader, raw, classValuesAsString);
+		return AnnotationReadingVisitorUtils.convertClassValues(
+				"method '" + getMethodName() + "'", this.classLoader, raw, classValuesAsString);
 	}
 
 	@Override
@@ -137,8 +138,9 @@ public class MethodMetadataReadingVisitor extends MethodVisitor implements Metho
 		}
 		MultiValueMap<String, Object> allAttributes = new LinkedMultiValueMap<>();
 		for (AnnotationAttributes annotationAttributes : this.attributesMap.get(annotationName)) {
-			for (Map.Entry<String, Object> entry : AnnotationReadingVisitorUtils.convertClassValues(
+			AnnotationAttributes convertedAttributes = AnnotationReadingVisitorUtils.convertClassValues(
-					this.classLoader, annotationAttributes, classValuesAsString).entrySet()) {
+					"method '" + getMethodName() + "'", this.classLoader, annotationAttributes, classValuesAsString);
+			for (Map.Entry<String, Object> entry : convertedAttributes.entrySet()) {
 				allAttributes.add(entry.getKey(), entry.getValue());
 			}
 		}

spring-core/src/main/java/org/springframework/core/type/classreading/RecursiveAnnotationArrayVisitor.java

@@ -69,7 +69,7 @@ class RecursiveAnnotationArrayVisitor extends AbstractRecursiveAnnotationVisitor
 	@Override
 	public AnnotationVisitor visitAnnotation(String attributeName, String asmTypeDescriptor) {
 		String annotationType = Type.getType(asmTypeDescriptor).getClassName();
-		AnnotationAttributes nestedAttributes = new AnnotationAttributes();
+		AnnotationAttributes nestedAttributes = new AnnotationAttributes(annotationType, this.classLoader);
 		this.allNestedAttributes.add(nestedAttributes);
 		return new RecursiveAnnotationAttributesVisitor(annotationType, nestedAttributes, this.classLoader);
 	}

spring-core/src/main/java/org/springframework/core/type/classreading/RecursiveAnnotationAttributesVisitor.java

@@ -16,10 +16,6 @@
 
 package org.springframework.core.type.classreading;
 
-import java.lang.annotation.Annotation;
-import java.lang.reflect.Method;
-import java.lang.reflect.Modifier;
-
 import org.springframework.core.annotation.AnnotationAttributes;
 import org.springframework.core.annotation.AnnotationUtils;
 
@@ -30,7 +26,7 @@ import org.springframework.core.annotation.AnnotationUtils;
  */
 class RecursiveAnnotationAttributesVisitor extends AbstractRecursiveAnnotationVisitor {
 
-	private final String annotationType;
+	protected final String annotationType;
 
 
 	public RecursiveAnnotationAttributesVisitor(
@@ -42,49 +38,8 @@ class RecursiveAnnotationAttributesVisitor extends AbstractRecursiveAnnotationVi
 
 
 	@Override
-	public final void visitEnd() {
+	public void visitEnd() {
-		try {
+		AnnotationUtils.registerDefaultValues(this.attributes);
-			Class<?> annotationClass = this.classLoader.loadClass(this.annotationType);
-			doVisitEnd(annotationClass);
-		}
-		catch (ClassNotFoundException ex) {
-			logger.debug("Failed to class-load type while reading annotation metadata. " +
-					"This is a non-fatal error, but certain annotation metadata may be unavailable.", ex);
-		}
-	}
-
-	protected void doVisitEnd(Class<?> annotationClass) {
-		registerDefaultValues(annotationClass);
-	}
-
-	private void registerDefaultValues(Class<?> annotationClass) {
-		// Only do defaults scanning for public annotations; we'd run into
-		// IllegalAccessExceptions otherwise, and we don't want to mess with
-		// accessibility in a SecurityManager environment.
-		if (Modifier.isPublic(annotationClass.getModifiers())) {
-			// Check declared default values of attributes in the annotation type.
-			Method[] annotationAttributes = annotationClass.getMethods();
-			for (Method annotationAttribute : annotationAttributes) {
-				String attributeName = annotationAttribute.getName();
-				Object defaultValue = annotationAttribute.getDefaultValue();
-				if (defaultValue != null && !this.attributes.containsKey(attributeName)) {
-					if (defaultValue instanceof Annotation) {
-						defaultValue = AnnotationAttributes.fromMap(AnnotationUtils.getAnnotationAttributes(
-								(Annotation) defaultValue, false, true));
-					}
-					else if (defaultValue instanceof Annotation[]) {
-						Annotation[] realAnnotations = (Annotation[]) defaultValue;
-						AnnotationAttributes[] mappedAnnotations = new AnnotationAttributes[realAnnotations.length];
-						for (int i = 0; i < realAnnotations.length; i++) {
-							mappedAnnotations[i] = AnnotationAttributes.fromMap(
-									AnnotationUtils.getAnnotationAttributes(realAnnotations[i], false, true));
-						}
-						defaultValue = mappedAnnotations;
-					}
-					this.attributes.put(attributeName, defaultValue);
-				}
-			}
-		}
 	}
 
 }

spring-core/src/test/java/org/springframework/core/annotation/AnnotationAttributesTests.java

@@ -18,16 +18,11 @@ package org.springframework.core.annotation;
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
-import java.util.Arrays;
-import java.util.List;
 
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.ExpectedException;
 
-import org.springframework.core.annotation.AnnotationUtilsTests.ContextConfig;
-import org.springframework.core.annotation.AnnotationUtilsTests.ImplicitAliasesContextConfig;
-
 import static org.hamcrest.CoreMatchers.*;
 import static org.junit.Assert.*;
 
@@ -133,21 +128,21 @@ public class AnnotationAttributesTests {
 	@Test
 	public void getEnumWithNullAttributeName() {
 		exception.expect(IllegalArgumentException.class);
-		exception.expectMessage(containsString("attributeName must not be null or empty"));
+		exception.expectMessage("must not be null or empty");
 		attributes.getEnum(null);
 	}
 
 	@Test
 	public void getEnumWithEmptyAttributeName() {
 		exception.expect(IllegalArgumentException.class);
-		exception.expectMessage(containsString("attributeName must not be null or empty"));
+		exception.expectMessage("must not be null or empty");
 		attributes.getEnum("");
 	}
 
 	@Test
 	public void getEnumWithUnknownAttributeName() {
 		exception.expect(IllegalArgumentException.class);
-		exception.expectMessage(containsString("Attribute 'bogus' not found"));
+		exception.expectMessage("Attribute 'bogus' not found");
 		attributes.getEnum("bogus");
 	}
 
@@ -159,337 +154,6 @@ public class AnnotationAttributesTests {
 		attributes.getEnum("color");
 	}
 
-	@Test
-	public void getAliasedString() {
-		final String value = "metaverse";
-
-		attributes.clear();
-		attributes.put("name", value);
-		assertEquals(value, getAliasedString("name"));
-		assertEquals(value, getAliasedString("value"));
-
-		attributes.clear();
-		attributes.put("value", value);
-		assertEquals(value, getAliasedString("name"));
-		assertEquals(value, getAliasedString("value"));
-
-		attributes.clear();
-		attributes.put("name", value);
-		attributes.put("value", value);
-		assertEquals(value, getAliasedString("name"));
-		assertEquals(value, getAliasedString("value"));
-	}
-
-	@Test
-	public void getAliasedStringWithImplicitAliases() {
-		final String value = "metaverse";
-		final List<String> aliases = Arrays.asList("value", "location1", "location2", "location3", "xmlFile", "groovyScript");
-
-		attributes = new AnnotationAttributes(ImplicitAliasesContextConfig.class);
-		attributes.put("value", value);
-		aliases.stream().forEach(alias -> assertEquals(value, getAliasedStringWithImplicitAliases(alias)));
-
-		attributes.clear();
-		attributes.put("location1", value);
-		aliases.stream().forEach(alias -> assertEquals(value, getAliasedStringWithImplicitAliases(alias)));
-
-		attributes.clear();
-		attributes.put("value", value);
-		attributes.put("location1", value);
-		attributes.put("xmlFile", value);
-		attributes.put("groovyScript", value);
-		aliases.stream().forEach(alias -> assertEquals(value, getAliasedStringWithImplicitAliases(alias)));
-	}
-
-	@Test
-	public void getAliasedStringWithImplicitAliasesWithMissingAliasedAttributes() {
-		final List<String> aliases = Arrays.asList("value", "location1", "location2", "location3", "xmlFile", "groovyScript");
-		attributes = new AnnotationAttributes(ImplicitAliasesContextConfig.class);
-
-		exception.expect(IllegalArgumentException.class);
-		exception.expectMessage(startsWith("Neither attribute 'value' nor one of its aliases ["));
-		aliases.stream().forEach(alias -> exception.expectMessage(containsString(alias)));
-		exception.expectMessage(endsWith("] was found in attributes for annotation [" + ImplicitAliasesContextConfig.class.getName() + "]"));
-		getAliasedStringWithImplicitAliases("value");
-	}
-
-	@Test
-	public void getAliasedStringFromSynthesizedAnnotationAttributes() {
-		Scope scope = ScopedComponent.class.getAnnotation(Scope.class);
-		AnnotationAttributes scopeAttributes = AnnotationUtils.getAnnotationAttributes(ScopedComponent.class, scope);
-
-		assertEquals("custom", getAliasedString(scopeAttributes, "name"));
-		assertEquals("custom", getAliasedString(scopeAttributes, "value"));
-	}
-
-	@Test
-	public void getAliasedStringWithMissingAliasedAttributes() {
-		exception.expect(IllegalArgumentException.class);
-		exception.expectMessage(equalTo("Neither attribute 'name' nor one of its aliases [value] was found in attributes for annotation [unknown]"));
-		getAliasedString("name");
-	}
-
-	@Test
-	public void getAliasedStringWithDifferentAliasedValues() {
-		attributes.put("name", "request");
-		attributes.put("value", "session");
-
-		exception.expect(AnnotationConfigurationException.class);
-		exception.expectMessage(containsString("In annotation [" + Scope.class.getName() + "]"));
-		exception.expectMessage(containsString("attribute [name] and its alias [value]"));
-		exception.expectMessage(containsString("[request] and [session]"));
-		exception.expectMessage(containsString("but only one is permitted"));
-
-		getAliasedString("name");
-	}
-
-	private String getAliasedString(String attributeName) {
-		return getAliasedString(this.attributes, attributeName);
-	}
-
-	private String getAliasedString(AnnotationAttributes attrs, String attributeName) {
-		return attrs.getAliasedString(attributeName, Scope.class, null);
-	}
-
-	private String getAliasedStringWithImplicitAliases(String attributeName) {
-		return this.attributes.getAliasedString(attributeName, ImplicitAliasesContextConfig.class, null);
-	}
-
-	@Test
-	public void getAliasedStringArray() {
-		final String[] INPUT = new String[] {"test.xml"};
-		final String[] EMPTY = new String[0];
-
-		attributes.clear();
-		attributes.put("location", INPUT);
-		assertArrayEquals(INPUT, getAliasedStringArray("location"));
-		assertArrayEquals(INPUT, getAliasedStringArray("value"));
-
-		attributes.clear();
-		attributes.put("value", INPUT);
-		assertArrayEquals(INPUT, getAliasedStringArray("location"));
-		assertArrayEquals(INPUT, getAliasedStringArray("value"));
-
-		attributes.clear();
-		attributes.put("location", INPUT);
-		attributes.put("value", INPUT);
-		assertArrayEquals(INPUT, getAliasedStringArray("location"));
-		assertArrayEquals(INPUT, getAliasedStringArray("value"));
-
-		attributes.clear();
-		attributes.put("location", INPUT);
-		attributes.put("value", EMPTY);
-		assertArrayEquals(INPUT, getAliasedStringArray("location"));
-		assertArrayEquals(INPUT, getAliasedStringArray("value"));
-
-		attributes.clear();
-		attributes.put("location", EMPTY);
-		attributes.put("value", INPUT);
-		assertArrayEquals(INPUT, getAliasedStringArray("location"));
-		assertArrayEquals(INPUT, getAliasedStringArray("value"));
-
-		attributes.clear();
-		attributes.put("location", EMPTY);
-		attributes.put("value", EMPTY);
-		assertArrayEquals(EMPTY, getAliasedStringArray("location"));
-		assertArrayEquals(EMPTY, getAliasedStringArray("value"));
-	}
-
-	@Test
-	public void getAliasedStringArrayWithImplicitAliases() {
-		final String[] INPUT = new String[] {"test.xml"};
-		final String[] EMPTY = new String[0];
-		final List<String> aliases = Arrays.asList("value", "location1", "location2", "location3", "xmlFile", "groovyScript");
-
-		attributes = new AnnotationAttributes(ImplicitAliasesContextConfig.class);
-
-		attributes.put("location1", INPUT);
-		aliases.stream().forEach(alias -> assertArrayEquals(INPUT, getAliasedStringArrayWithImplicitAliases(alias)));
-
-		attributes.clear();
-		attributes.put("value", INPUT);
-		aliases.stream().forEach(alias -> assertArrayEquals(INPUT, getAliasedStringArrayWithImplicitAliases(alias)));
-
-		attributes.clear();
-		attributes.put("location1", INPUT);
-		attributes.put("value", INPUT);
-		aliases.stream().forEach(alias -> assertArrayEquals(INPUT, getAliasedStringArrayWithImplicitAliases(alias)));
-
-		attributes.clear();
-		attributes.put("location1", INPUT);
-		attributes.put("value", EMPTY);
-		aliases.stream().forEach(alias -> assertArrayEquals(INPUT, getAliasedStringArrayWithImplicitAliases(alias)));
-
-		attributes.clear();
-		attributes.put("location1", EMPTY);
-		attributes.put("value", INPUT);
-		aliases.stream().forEach(alias -> assertArrayEquals(INPUT, getAliasedStringArrayWithImplicitAliases(alias)));
-
-		attributes.clear();
-		attributes.put("location1", EMPTY);
-		attributes.put("value", EMPTY);
-		aliases.stream().forEach(alias -> assertArrayEquals(EMPTY, getAliasedStringArrayWithImplicitAliases(alias)));
-	}
-
-	@Test
-	public void getAliasedStringArrayWithImplicitAliasesWithMissingAliasedAttributes() {
-		final List<String> aliases = Arrays.asList("value", "location1", "location2", "location3", "xmlFile", "groovyScript");
-		attributes = new AnnotationAttributes(ImplicitAliasesContextConfig.class);
-
-		exception.expect(IllegalArgumentException.class);
-		exception.expectMessage(startsWith("Neither attribute 'value' nor one of its aliases ["));
-		aliases.stream().forEach(alias -> exception.expectMessage(containsString(alias)));
-		exception.expectMessage(endsWith("] was found in attributes for annotation [" + ImplicitAliasesContextConfig.class.getName() + "]"));
-		getAliasedStringArrayWithImplicitAliases("value");
-	}
-
-	@Test
-	public void getAliasedStringArrayWithMissingAliasedAttributes() {
-		exception.expect(IllegalArgumentException.class);
-		exception.expectMessage(equalTo("Neither attribute 'location' nor one of its aliases [value] was found in attributes for annotation [unknown]"));
-		getAliasedStringArray("location");
-	}
-
-	@Test
-	public void getAliasedStringArrayWithDifferentAliasedValues() {
-		attributes.put("location", new String[] {"1.xml"});
-		attributes.put("value", new String[] {"2.xml"});
-
-		exception.expect(AnnotationConfigurationException.class);
-		exception.expectMessage(containsString("In annotation [" + ContextConfig.class.getName() + "]"));
-		exception.expectMessage(containsString("attribute [location] and its alias [value]"));
-		exception.expectMessage(containsString("[{1.xml}] and [{2.xml}]"));
-		exception.expectMessage(containsString("but only one is permitted"));
-
-		getAliasedStringArray("location");
-	}
-
-	private String[] getAliasedStringArray(String attributeName) {
-		// Note: even though the attributes we test against here are of type
-		// String instead of String[], it doesn't matter... since
-		// AnnotationAttributes does not validate the actual return type of
-		// attributes in the annotation.
-		return attributes.getAliasedStringArray(attributeName, ContextConfig.class, null);
-	}
-
-	private String[] getAliasedStringArrayWithImplicitAliases(String attributeName) {
-		// Note: even though the attributes we test against here are of type
-		// String instead of String[], it doesn't matter... since
-		// AnnotationAttributes does not validate the actual return type of
-		// attributes in the annotation.
-		return this.attributes.getAliasedStringArray(attributeName, ImplicitAliasesContextConfig.class, null);
-	}
-
-	@Test
-	public void getAliasedClassArray() {
-		final Class<?>[] INPUT = new Class<?>[] {String.class};
-		final Class<?>[] EMPTY = new Class<?>[0];
-
-		attributes.clear();
-		attributes.put("classes", INPUT);
-		assertArrayEquals(INPUT, getAliasedClassArray("classes"));
-		assertArrayEquals(INPUT, getAliasedClassArray("value"));
-
-		attributes.clear();
-		attributes.put("value", INPUT);
-		assertArrayEquals(INPUT, getAliasedClassArray("classes"));
-		assertArrayEquals(INPUT, getAliasedClassArray("value"));
-
-		attributes.clear();
-		attributes.put("classes", INPUT);
-		attributes.put("value", INPUT);
-		assertArrayEquals(INPUT, getAliasedClassArray("classes"));
-		assertArrayEquals(INPUT, getAliasedClassArray("value"));
-
-		attributes.clear();
-		attributes.put("classes", INPUT);
-		attributes.put("value", EMPTY);
-		assertArrayEquals(INPUT, getAliasedClassArray("classes"));
-		assertArrayEquals(INPUT, getAliasedClassArray("value"));
-
-		attributes.clear();
-		attributes.put("classes", EMPTY);
-		attributes.put("value", INPUT);
-		assertArrayEquals(INPUT, getAliasedClassArray("classes"));
-		assertArrayEquals(INPUT, getAliasedClassArray("value"));
-
-		attributes.clear();
-		attributes.put("classes", EMPTY);
-		attributes.put("value", EMPTY);
-		assertArrayEquals(EMPTY, getAliasedClassArray("classes"));
-		assertArrayEquals(EMPTY, getAliasedClassArray("value"));
-	}
-
-	@Test
-	public void getAliasedClassArrayWithImplicitAliases() {
-		final Class<?>[] INPUT = new Class<?>[] {String.class};
-		final Class<?>[] EMPTY = new Class<?>[0];
-		final List<String> aliases = Arrays.asList("value", "location1", "location2", "location3", "xmlFile", "groovyScript");
-
-		attributes = new AnnotationAttributes(ImplicitAliasesContextConfig.class);
-
-		attributes.put("location1", INPUT);
-		aliases.stream().forEach(alias -> assertArrayEquals(INPUT, getAliasedClassArrayWithImplicitAliases(alias)));
-
-		attributes.clear();
-		attributes.put("value", INPUT);
-		aliases.stream().forEach(alias -> assertArrayEquals(INPUT, getAliasedClassArrayWithImplicitAliases(alias)));
-
-		attributes.clear();
-		attributes.put("location1", INPUT);
-		attributes.put("value", INPUT);
-		aliases.stream().forEach(alias -> assertArrayEquals(INPUT, getAliasedClassArrayWithImplicitAliases(alias)));
-
-		attributes.clear();
-		attributes.put("location1", INPUT);
-		attributes.put("value", EMPTY);
-		aliases.stream().forEach(alias -> assertArrayEquals(INPUT, getAliasedClassArrayWithImplicitAliases(alias)));
-
-		attributes.clear();
-		attributes.put("location1", EMPTY);
-		attributes.put("value", INPUT);
-		aliases.stream().forEach(alias -> assertArrayEquals(INPUT, getAliasedClassArrayWithImplicitAliases(alias)));
-
-		attributes.clear();
-		attributes.put("location1", EMPTY);
-		attributes.put("value", EMPTY);
-		aliases.stream().forEach(alias -> assertArrayEquals(EMPTY, getAliasedClassArrayWithImplicitAliases(alias)));
-	}
-
-	@Test
-	public void getAliasedClassArrayWithMissingAliasedAttributes() {
-		exception.expect(IllegalArgumentException.class);
-		exception.expectMessage(equalTo("Neither attribute 'classes' nor one of its aliases [value] was found in attributes for annotation [unknown]"));
-		getAliasedClassArray("classes");
-	}
-
-	@Test
-	public void getAliasedClassArrayWithDifferentAliasedValues() {
-		attributes.put("classes", new Class<?>[] {String.class});
-		attributes.put("value", new Class<?>[] {Number.class});
-
-		exception.expect(AnnotationConfigurationException.class);
-		exception.expectMessage(containsString("In annotation [" + Filter.class.getName() + "]"));
-		exception.expectMessage(containsString("attribute [classes] and its alias [value]"));
-		exception.expectMessage(containsString("[{class java.lang.String}] and [{class java.lang.Number}]"));
-		exception.expectMessage(containsString("but only one is permitted"));
-
-		getAliasedClassArray("classes");
-	}
-
-
-	private Class<?>[] getAliasedClassArray(String attributeName) {
-		return attributes.getAliasedClassArray(attributeName, Filter.class, null);
-	}
-
-	private Class<?>[] getAliasedClassArrayWithImplicitAliases(String attributeName) {
-		// Note: even though the attributes we test against here are of type
-		// String instead of Class<?>[], it doesn't matter... since
-		// AnnotationAttributes does not validate the actual return type of
-		// attributes in the annotation.
-		return this.attributes.getAliasedClassArray(attributeName, ImplicitAliasesContextConfig.class, null);
-	}
-
 
 	enum Color {
 
@@ -514,23 +178,4 @@ public class AnnotationAttributesTests {
 	static class FilteredClass {
 	}
 
-
-	/**
-	 * Mock of {@code org.springframework.context.annotation.Scope}.
-	 */
-	@Retention(RetentionPolicy.RUNTIME)
-	@interface Scope {
-
-		@AliasFor(attribute = "name")
-		String value() default "singleton";
-
-		@AliasFor(attribute = "value")
-		String name() default "singleton";
-	}
-
-
-	@Scope(name = "custom")
-	static class ScopedComponent {
-	}
-
 }

spring-core/src/test/java/org/springframework/core/type/AnnotationMetadataTests.java

@@ -30,6 +30,7 @@ import java.util.Set;
 
 import org.junit.Test;
 
+import org.springframework.core.annotation.AliasFor;
 import org.springframework.core.annotation.AnnotationAttributes;
 import org.springframework.core.type.classreading.MetadataReader;
 import org.springframework.core.type.classreading.MetadataReaderFactory;
@@ -291,6 +292,7 @@ public class AnnotationMetadataTests {
 		Set<MethodMetadata> methods = metadata.getAnnotatedMethods(DirectAnnotation.class.getName());
 		MethodMetadata method = methods.iterator().next();
 		assertEquals("direct", method.getAnnotationAttributes(DirectAnnotation.class.getName()).get("value"));
+		assertEquals("direct", method.getAnnotationAttributes(DirectAnnotation.class.getName()).get("myValue"));
 		List<Object> allMeta = method.getAllAnnotationAttributes(DirectAnnotation.class.getName()).get("value");
 		assertThat(new HashSet<>(allMeta), is(equalTo(new HashSet<Object>(Arrays.asList("direct", "meta")))));
 		allMeta = method.getAllAnnotationAttributes(DirectAnnotation.class.getName()).get("additional");
@@ -416,7 +418,11 @@ public class AnnotationMetadataTests {
 	@Retention(RetentionPolicy.RUNTIME)
 	public @interface DirectAnnotation {
 
-		String value();
+		@AliasFor("myValue")
+		String value() default "";
+
+		@AliasFor("value")
+		String myValue() default "";
 
 		String additional() default "direct";
 	}
@@ -449,7 +455,7 @@ public class AnnotationMetadataTests {
 	}
 
 	// SPR-10914
-	public static enum SubclassEnum {
+	public enum SubclassEnum {
 		FOO {
 		/* Do not delete! This subclassing is intentional. */
 		},
@@ -489,14 +495,14 @@ public class AnnotationMetadataTests {
 	@Target(ElementType.TYPE)
 	@Retention(RetentionPolicy.RUNTIME)
 	@Component
-	public static @interface TestConfiguration {
+	public @interface TestConfiguration {
 
 		String value() default "";
 	}
 
 	@Retention(RetentionPolicy.RUNTIME)
 	@Target(ElementType.TYPE)
-	public static @interface TestComponentScan {
+	public @interface TestComponentScan {
 
 		String[] value() default {};
 
@@ -509,7 +515,7 @@ public class AnnotationMetadataTests {
 	@TestComponentScan(basePackages = "bogus")
 	@Retention(RetentionPolicy.RUNTIME)
 	@Target(ElementType.TYPE)
-	public static @interface ComposedConfigurationWithAttributeOverrides {
+	public @interface ComposedConfigurationWithAttributeOverrides {
 
 		String[] basePackages() default {};
 	}
@@ -520,19 +526,19 @@ public class AnnotationMetadataTests {
 
 	@Retention(RetentionPolicy.RUNTIME)
 	@Target(ElementType.TYPE)
-	public static @interface NamedAnnotation1 {
+	public @interface NamedAnnotation1 {
 		String name() default "";
 	}
 
 	@Retention(RetentionPolicy.RUNTIME)
 	@Target(ElementType.TYPE)
-	public static @interface NamedAnnotation2 {
+	public @interface NamedAnnotation2 {
 		String name() default "";
 	}
 
 	@Retention(RetentionPolicy.RUNTIME)
 	@Target(ElementType.TYPE)
-	public static @interface NamedAnnotation3 {
+	public @interface NamedAnnotation3 {
 		String name() default "";
 	}
 
@@ -547,7 +553,7 @@ public class AnnotationMetadataTests {
 	@NamedAnnotation3(name = "name 3")
 	@Retention(RetentionPolicy.RUNTIME)
 	@Target(ElementType.TYPE)
-	public static @interface NamedComposedAnnotation {
+	public @interface NamedComposedAnnotation {
 	}
 
 	@NamedComposedAnnotation