Consistent use of varargs plus related polishing

Author: jhoeller

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -86,7 +86,7 @@ public interface MethodMatcher {
 	 * @return whether there's a runtime match
 	 * @see MethodMatcher#matches(Method, Class)
 	 */
-	boolean matches(Method method, Class<?> targetClass, Object[] args);
+	boolean matches(Method method, Class<?> targetClass, Object... args);
 
 
 	/**

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -29,12 +29,14 @@ class TrueMethodMatcher implements MethodMatcher, Serializable {
 
 	public static final TrueMethodMatcher INSTANCE = new TrueMethodMatcher();
 
+
 	/**
 	 * Enforce Singleton pattern.
 	 */
 	private TrueMethodMatcher() {
 	}
 
+
 	@Override
 	public boolean isRuntime() {
 		return false;
@@ -46,11 +48,17 @@ public boolean matches(Method method, Class<?> targetClass) {
 	}
 
 	@Override
-	public boolean matches(Method method, Class<?> targetClass, Object[] args) {
+	public boolean matches(Method method, Class<?> targetClass, Object... args) {
 		// Should never be invoked as isRuntime returns false.
 		throw new UnsupportedOperationException();
 	}
 
+
+	@Override
+	public String toString() {
+		return "MethodMatcher.TRUE";
+	}
+
 	/**
 	 * Required to support serialization. Replaces with canonical
 	 * instance on deserialization, protecting Singleton pattern.
@@ -60,9 +68,4 @@ private Object readResolve() {
 		return INSTANCE;
 	}
 
-	@Override
-	public String toString() {
-		return "MethodMatcher.TRUE";
-	}
-
 }

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

@@ -135,7 +135,7 @@ public static JoinPoint currentJoinPoint() {
 	 */
 	private int joinPointStaticPartArgumentIndex = -1;
 
-	private Map<String, Integer> argumentBindings = null;
+	private Map<String, Integer> argumentBindings;
 
 	private boolean argumentsIntrospected = false;
 
@@ -250,17 +250,17 @@ public void setArgumentNamesFromStringArray(String... args) {
 						this.argumentNames[i] + "' that is not a valid Java identifier");
 			}
 		}
-		if (argumentNames != null) {
-			if (aspectJAdviceMethod.getParameterTypes().length == argumentNames.length + 1) {
+		if (this.argumentNames != null) {
+			if (this.aspectJAdviceMethod.getParameterTypes().length == this.argumentNames.length + 1) {
 				// May need to add implicit join point arg name...
-				Class<?> firstArgType = aspectJAdviceMethod.getParameterTypes()[0];
+				Class<?> firstArgType = this.aspectJAdviceMethod.getParameterTypes()[0];
 				if (firstArgType == JoinPoint.class ||
 						firstArgType == ProceedingJoinPoint.class ||
 						firstArgType == JoinPoint.StaticPart.class) {
-					String[] oldNames = argumentNames;
-					argumentNames = new String[oldNames.length + 1];
-					argumentNames[0] = "THIS_JOIN_POINT";
-					System.arraycopy(oldNames, 0, argumentNames, 1, oldNames.length);
+					String[] oldNames = this.argumentNames;
+					this.argumentNames = new String[oldNames.length + 1];
+					this.argumentNames[0] = "THIS_JOIN_POINT";
+					System.arraycopy(oldNames, 0, this.argumentNames, 1, oldNames.length);
 				}
 			}
 		}
@@ -456,8 +456,8 @@ private void bindExplicitArguments(int numArgumentsLeftToBind) {
 
 		int numExpectedArgumentNames = this.aspectJAdviceMethod.getParameterTypes().length;
 		if (this.argumentNames.length != numExpectedArgumentNames) {
-			throw new IllegalStateException("Expecting to find " + numExpectedArgumentNames
-					+ " arguments to bind by name in advice, but actually found " +
+			throw new IllegalStateException("Expecting to find " + numExpectedArgumentNames +
+					" arguments to bind by name in advice, but actually found " +
 					this.argumentNames.length + " arguments.");
 		}
 
@@ -471,8 +471,8 @@ private void bindExplicitArguments(int numArgumentsLeftToBind) {
 		// specified, and find the discovered argument types.
 		if (this.returningName != null) {
 			if (!this.argumentBindings.containsKey(this.returningName)) {
-				throw new IllegalStateException("Returning argument name '"
-						+ this.returningName + "' was not bound in advice arguments");
+				throw new IllegalStateException("Returning argument name '" + this.returningName +
+						"' was not bound in advice arguments");
 			}
 			else {
 				Integer index = this.argumentBindings.get(this.returningName);
@@ -482,8 +482,8 @@ private void bindExplicitArguments(int numArgumentsLeftToBind) {
 		}
 		if (this.throwingName != null) {
 			if (!this.argumentBindings.containsKey(this.throwingName)) {
-				throw new IllegalStateException("Throwing argument name '"
-						+ this.throwingName + "' was not bound in advice arguments");
+				throw new IllegalStateException("Throwing argument name '" + this.throwingName +
+						"' was not bound in advice arguments");
 			}
 			else {
 				Integer index = this.argumentBindings.get(this.throwingName);
@@ -581,10 +581,9 @@ else if (this.joinPointStaticPartArgumentIndex != -1) {
 		}
 
 		if (numBound != this.adviceInvocationArgumentCount) {
-			throw new IllegalStateException("Required to bind " + this.adviceInvocationArgumentCount
-					+ " arguments, but only bound " + numBound + " (JoinPointMatch " +
-					(jpMatch == null ? "was NOT" : "WAS") +
-					" bound in invocation)");
+			throw new IllegalStateException("Required to bind " + this.adviceInvocationArgumentCount +
+					" arguments, but only bound " + numBound + " (JoinPointMatch " +
+					(jpMatch == null ? "was NOT" : "WAS") + " bound in invocation)");
 		}
 
 		return adviceInvocationArgs;

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -37,6 +37,7 @@ public AspectJAfterAdvice(
 		super(aspectJBeforeAdviceMethod, pointcut, aif);
 	}
 
+
 	@Override
 	public Object invoke(MethodInvocation mi) throws Throwable {
 		try {

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

@@ -40,6 +40,7 @@ public AspectJAfterReturningAdvice(
 		super(aspectJBeforeAdviceMethod, pointcut, aif);
 	}
 
+
 	@Override
 	public boolean isBeforeAdvice() {
 		return false;
@@ -62,6 +63,7 @@ public void afterReturning(Object returnValue, Method method, Object[] args, Obj
 		}
 	}
 
+
 	/**
 	 * Following AspectJ semantics, if a returning clause was specified, then the
 	 * advice is only invoked if the returned value is an instance of the given

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -37,6 +37,7 @@ public AspectJAfterThrowingAdvice(
 		super(aspectJBeforeAdviceMethod, pointcut, aif);
 	}
 
+
 	@Override
 	public boolean isBeforeAdvice() {
 		return false;
@@ -57,20 +58,20 @@ public Object invoke(MethodInvocation mi) throws Throwable {
 		try {
 			return mi.proceed();
 		}
-		catch (Throwable t) {
-			if (shouldInvokeOnThrowing(t)) {
-				invokeAdviceMethod(getJoinPointMatch(), null, t);
+		catch (Throwable ex) {
+			if (shouldInvokeOnThrowing(ex)) {
+				invokeAdviceMethod(getJoinPointMatch(), null, ex);
 			}
-			throw t;
+			throw ex;
 		}
 	}
 
 	/**
 	 * In AspectJ semantics, after throwing advice that specifies a throwing clause
 	 * is only invoked if the thrown exception is a subtype of the given throwing type.
 	 */
-	private boolean shouldInvokeOnThrowing(Throwable t) {
-		return getDiscoveredThrowingType().isAssignableFrom(t.getClass());
+	private boolean shouldInvokeOnThrowing(Throwable ex) {
+		return getDiscoveredThrowingType().isAssignableFrom(ex.getClass());
 	}
 
 }

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -41,6 +41,7 @@ public AspectJAroundAdvice(
 		super(aspectJAroundAdviceMethod, pointcut, aif);
 	}
 
+
 	@Override
 	public boolean isBeforeAdvice() {
 		return false;
@@ -56,7 +57,6 @@ protected boolean supportsProceedingJoinPoint() {
 		return true;
 	}
 
-
 	@Override
 	public Object invoke(MethodInvocation mi) throws Throwable {
 		if (!(mi instanceof ProxyMethodInvocation)) {

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

@@ -305,7 +305,7 @@ public boolean isRuntime() {
 	}
 
 	@Override
-	public boolean matches(Method method, Class<?> targetClass, Object[] args) {
+	public boolean matches(Method method, Class<?> targetClass, Object... args) {
 		checkReadyToMatch();
 		ShadowMatch shadowMatch = getShadowMatch(AopUtils.getMostSpecificMethod(method, targetClass), method);
 		ShadowMatch originalShadowMatch = getShadowMatch(method, method);

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -35,6 +35,7 @@ public AspectJMethodBeforeAdvice(
 		super(aspectJBeforeAdviceMethod, pointcut, aif);
 	}
 
+
 	@Override
 	public void before(Method method, Object[] args, Object target) throws Throwable {
 		invokeAdviceMethod(getJoinPointMatch(), null, null);

spring-aop/src/main/java/org/springframework/aop/aspectj/annotation/AbstractAspectJAdvisorFactory.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2013 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -61,34 +61,6 @@ public abstract class AbstractAspectJAdvisorFactory implements AspectJAdvisorFac
 	private static final String AJC_MAGIC = "ajc$";
 
 
-	/**
-	 * Find and return the first AspectJ annotation on the given method
-	 * (there <i>should</i> only be one anyway...)
-	 */
-	@SuppressWarnings("unchecked")
-	protected static AspectJAnnotation<?> findAspectJAnnotationOnMethod(Method method) {
-		Class<?>[] classesToLookFor = new Class<?>[] {
-				Before.class, Around.class, After.class, AfterReturning.class, AfterThrowing.class, Pointcut.class};
-		for (Class<?> c : classesToLookFor) {
-			AspectJAnnotation<?> foundAnnotation = findAnnotation(method, (Class<Annotation>) c);
-			if (foundAnnotation != null) {
-				return foundAnnotation;
-			}
-		}
-		return null;
-	}
-
-	private static <A extends Annotation> AspectJAnnotation<A> findAnnotation(Method method, Class<A> toLookFor) {
-		A result = AnnotationUtils.findAnnotation(method, toLookFor);
-		if (result != null) {
-			return new AspectJAnnotation<A>(result);
-		}
-		else {
-			return null;
-		}
-	}
-
-
 	/** Logger available to subclasses */
 	protected final Log logger = LogFactory.getLog(getClass());
 
@@ -181,6 +153,7 @@ private Class<?>[] extractPointcutParameterTypes(String[] argNames, Method advic
 			throw new IllegalStateException("Expecting at least " + argNames.length +
 					" arguments in the advice declaration, but only found " + paramTypes.length);
 		}
+
 		// Make the simplifying assumption for now that all of the JoinPoint based arguments
 		// come first in the advice declaration.
 		int typeOffset = paramTypes.length - argNames.length;
@@ -191,7 +164,36 @@ private Class<?>[] extractPointcutParameterTypes(String[] argNames, Method advic
 	}
 
 
+	/**
+	 * Find and return the first AspectJ annotation on the given method
+	 * (there <i>should</i> only be one anyway...)
+	 */
+	@SuppressWarnings("unchecked")
+	protected static AspectJAnnotation<?> findAspectJAnnotationOnMethod(Method method) {
+		Class<?>[] classesToLookFor = new Class<?>[] {
+				Before.class, Around.class, After.class, AfterReturning.class, AfterThrowing.class, Pointcut.class};
+		for (Class<?> c : classesToLookFor) {
+			AspectJAnnotation<?> foundAnnotation = findAnnotation(method, (Class<Annotation>) c);
+			if (foundAnnotation != null) {
+				return foundAnnotation;
+			}
+		}
+		return null;
+	}
+
+	private static <A extends Annotation> AspectJAnnotation<A> findAnnotation(Method method, Class<A> toLookFor) {
+		A result = AnnotationUtils.findAnnotation(method, toLookFor);
+		if (result != null) {
+			return new AspectJAnnotation<A>(result);
+		}
+		else {
+			return null;
+		}
+	}
+
+
 	protected enum AspectJAnnotationType {
+
 		AtPointcut,
 		AtBefore,
 		AtAfter,