Consistent use of LinkedHashSet for interfaces (since interface order may matter in subtle cases)

(cherry picked from commit 6f9d7da)

spring-aop/src/main/java/org/springframework/aop/IntroductionInfo.java

@@ -34,6 +34,6 @@ public interface IntroductionInfo {
 	 * Return the additional interfaces introduced by this Advisor or Advice.
 	 * @return the introduced interfaces
 	 */
-	Class[] getInterfaces();
+	Class<?>[] getInterfaces();
 
 }

spring-aop/src/main/java/org/springframework/aop/aspectj/DeclareParentsAdvisor.java

@@ -34,7 +34,7 @@ import org.springframework.aop.support.DelegatingIntroductionInterceptor;
  */
 public class DeclareParentsAdvisor implements IntroductionAdvisor {
 
-	private final Class introducedInterface;
+	private final Class<?> introducedInterface;
 
 	private final ClassFilter typePatternClassFilter;
 
@@ -47,7 +47,7 @@ public class DeclareParentsAdvisor implements IntroductionAdvisor {
 	 * @param typePattern type pattern the introduction is restricted to
 	 * @param defaultImpl the default implementation class
 	 */
-	public DeclareParentsAdvisor(Class interfaceType, String typePattern, Class defaultImpl) {
+	public DeclareParentsAdvisor(Class<?> interfaceType, String typePattern, Class<?> defaultImpl) {
 		this(interfaceType, typePattern, defaultImpl,
 			 new DelegatePerTargetObjectIntroductionInterceptor(defaultImpl, interfaceType));
 	}
@@ -58,7 +58,7 @@ public class DeclareParentsAdvisor implements IntroductionAdvisor {
 	 * @param typePattern type pattern the introduction is restricted to
 	 * @param delegateRef the delegate implementation object
 	 */
-	public DeclareParentsAdvisor(Class interfaceType, String typePattern, Object delegateRef) {
+	public DeclareParentsAdvisor(Class<?> interfaceType, String typePattern, Object delegateRef) {
 		this(interfaceType, typePattern, delegateRef.getClass(),
 			 new DelegatingIntroductionInterceptor(delegateRef));
 	}
@@ -71,13 +71,13 @@ public class DeclareParentsAdvisor implements IntroductionAdvisor {
 	 * @param implementationClass implementation class
 	 * @param advice delegation advice
 	 */
-	private DeclareParentsAdvisor(Class interfaceType, String typePattern, Class implementationClass, Advice advice) {
+	private DeclareParentsAdvisor(Class<?> interfaceType, String typePattern, Class<?> implementationClass, Advice advice) {
 		this.introducedInterface = interfaceType;
 		ClassFilter typePatternFilter = new TypePatternClassFilter(typePattern);
 
 		// Excludes methods implemented.
 		ClassFilter exclusion = new ClassFilter() {
-			public boolean matches(Class clazz) {
+			public boolean matches(Class<?> clazz) {
 				return !(introducedInterface.isAssignableFrom(clazz));
 			}
 		};
@@ -103,8 +103,8 @@ public class DeclareParentsAdvisor implements IntroductionAdvisor {
 		return this.advice;
 	}
 
-	public Class[] getInterfaces() {
-		return new Class[] {this.introducedInterface};
+	public Class<?>[] getInterfaces() {
+		return new Class<?>[] {this.introducedInterface};
 	}
 
 }

spring-aop/src/main/java/org/springframework/aop/support/AopUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2014 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.
@@ -19,7 +19,7 @@ package org.springframework.aop.support;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.lang.reflect.Proxy;
-import java.util.HashSet;
+import java.util.LinkedHashSet;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Set;
@@ -215,7 +215,7 @@ public abstract class AopUtils {
 			introductionAwareMethodMatcher = (IntroductionAwareMethodMatcher) methodMatcher;
 		}
 
-		Set<Class> classes = new HashSet<Class>(ClassUtils.getAllInterfacesForClassAsSet(targetClass));
+		Set<Class> classes = new LinkedHashSet<Class>(ClassUtils.getAllInterfacesForClassAsSet(targetClass));
 		classes.add(targetClass);
 		for (Class<?> clazz : classes) {
 			Method[] methods = clazz.getMethods();

spring-aop/src/main/java/org/springframework/aop/support/DefaultIntroductionAdvisor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2014 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 +17,7 @@
 package org.springframework.aop.support;
 
 import java.io.Serializable;
-import java.util.HashSet;
+import java.util.LinkedHashSet;
 import java.util.Set;
 
 import org.aopalliance.aop.Advice;
@@ -43,7 +43,7 @@ public class DefaultIntroductionAdvisor implements IntroductionAdvisor, ClassFil
 
 	private final Advice advice;
 
-	private final Set<Class> interfaces = new HashSet<Class>();
+	private final Set<Class> interfaces = new LinkedHashSet<Class>();
 
 	private int order = Integer.MAX_VALUE;
 
@@ -68,11 +68,11 @@ public class DefaultIntroductionAdvisor implements IntroductionAdvisor, ClassFil
 		Assert.notNull(advice, "Advice must not be null");
 		this.advice = advice;
 		if (introductionInfo != null) {
-			Class[] introducedInterfaces = introductionInfo.getInterfaces();
+			Class<?>[] introducedInterfaces = introductionInfo.getInterfaces();
 			if (introducedInterfaces.length == 0) {
 				throw new IllegalArgumentException("IntroductionAdviceSupport implements no interfaces");
 			}
-			for (Class ifc : introducedInterfaces) {
+			for (Class<?> ifc : introducedInterfaces) {
 				addInterface(ifc);
 			}
 		}
@@ -83,7 +83,7 @@ public class DefaultIntroductionAdvisor implements IntroductionAdvisor, ClassFil
 	 * @param advice the Advice to apply
 	 * @param intf the interface to introduce
 	 */
-	public DefaultIntroductionAdvisor(DynamicIntroductionAdvice advice, Class intf) {
+	public DefaultIntroductionAdvisor(DynamicIntroductionAdvice advice, Class<?> intf) {
 		Assert.notNull(advice, "Advice must not be null");
 		this.advice = advice;
 		addInterface(intf);
@@ -94,7 +94,7 @@ public class DefaultIntroductionAdvisor implements IntroductionAdvisor, ClassFil
 	 * Add the specified interface to the list of interfaces to introduce.
 	 * @param intf the interface to introduce
 	 */
-	public void addInterface(Class intf) {
+	public void addInterface(Class<?> intf) {
 		Assert.notNull(intf, "Interface must not be null");
 		if (!intf.isInterface()) {
 			throw new IllegalArgumentException("Specified class [" + intf.getName() + "] must be an interface");
@@ -102,12 +102,13 @@ public class DefaultIntroductionAdvisor implements IntroductionAdvisor, ClassFil
 		this.interfaces.add(intf);
 	}
 
-	public Class[] getInterfaces() {
-		return this.interfaces.toArray(new Class[this.interfaces.size()]);
+	public Class<?>[] getInterfaces() {
+		return this.interfaces.toArray(new Class<?>[this.interfaces.size()]);
 	}
 
+	@Override
 	public void validateInterfaces() throws IllegalArgumentException {
-		for (Class ifc : this.interfaces) {
+		for (Class<?> ifc : this.interfaces) {
 			if (this.advice instanceof DynamicIntroductionAdvice &&
 					!((DynamicIntroductionAdvice) this.advice).implementsInterface(ifc)) {
 			 throw new IllegalArgumentException("DynamicIntroductionAdvice [" + this.advice + "] " +
@@ -138,7 +139,7 @@ public class DefaultIntroductionAdvisor implements IntroductionAdvisor, ClassFil
 		return this;
 	}
 
-	public boolean matches(Class clazz) {
+	public boolean matches(Class<?> clazz) {
 		return true;
 	}
 

spring-aop/src/main/java/org/springframework/aop/support/IntroductionInfoSupport.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2014 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.
@@ -20,7 +20,7 @@ import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.io.Serializable;
 import java.lang.reflect.Method;
-import java.util.HashSet;
+import java.util.LinkedHashSet;
 import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
@@ -43,7 +43,7 @@ import org.springframework.util.ClassUtils;
 @SuppressWarnings("serial")
 public class IntroductionInfoSupport implements IntroductionInfo, Serializable {
 
-	protected final Set<Class> publishedInterfaces = new HashSet<Class>();
+	protected final Set<Class> publishedInterfaces = new LinkedHashSet<Class>();
 
 	private transient Map<Method, Boolean> rememberedMethods = new ConcurrentHashMap<Method, Boolean>(32);
 
@@ -55,12 +55,12 @@ public class IntroductionInfoSupport implements IntroductionInfo, Serializable {
 	 * <p>Does nothing if the interface is not implemented by the delegate.
 	 * @param intf the interface to suppress
 	 */
-	public void suppressInterface(Class intf) {
+	public void suppressInterface(Class<?> intf) {
 		this.publishedInterfaces.remove(intf);
 	}
 
-	public Class[] getInterfaces() {
-		return this.publishedInterfaces.toArray(new Class[this.publishedInterfaces.size()]);
+	public Class<?>[] getInterfaces() {
+		return this.publishedInterfaces.toArray(new Class<?>[this.publishedInterfaces.size()]);
 	}
 
 	/**
@@ -68,8 +68,8 @@ public class IntroductionInfoSupport implements IntroductionInfo, Serializable {
 	 * @param ifc the interface to check
 	 * @return whether the interface is part of this introduction
 	 */
-	public boolean implementsInterface(Class ifc) {
-		for (Class pubIfc : this.publishedInterfaces) {
+	public boolean implementsInterface(Class<?> ifc) {
+		for (Class<?> pubIfc : this.publishedInterfaces) {
 			if (ifc.isInterface() && ifc.isAssignableFrom(pubIfc)) {
 				return true;
 			}