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 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
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 *      http://www.apache.org/licenses/LICENSE-2.0
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package org.springframework.aop.support.annotation;

import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;

import org.springframework.aop.support.AopUtils;
import org.springframework.aop.support.StaticMethodMatcher;
import org.springframework.core.annotation.AnnotatedElementUtils;
import org.springframework.util.Assert;

Simple MethodMatcher that looks for a specific Java 5 annotation being present on a method (checking both the method on the invoked interface, if any, and the corresponding method on the target class).
Author:Juergen Hoeller
See Also:
Since:2.0
/** * Simple MethodMatcher that looks for a specific Java 5 annotation * being present on a method (checking both the method on the invoked * interface, if any, and the corresponding method on the target class). * * @author Juergen Hoeller * @since 2.0 * @see AnnotationMatchingPointcut */
public class AnnotationMethodMatcher extends StaticMethodMatcher { private final Class<? extends Annotation> annotationType; private final boolean checkInherited;
Create a new AnnotationClassFilter for the given annotation type.
Params:
  • annotationType – the annotation type to look for
/** * Create a new AnnotationClassFilter for the given annotation type. * @param annotationType the annotation type to look for */
public AnnotationMethodMatcher(Class<? extends Annotation> annotationType) { this(annotationType, false); }
Create a new AnnotationClassFilter for the given annotation type.
Params:
Since:5.0
/** * Create a new AnnotationClassFilter for the given annotation type. * @param annotationType the annotation type to look for * @param checkInherited whether to also check the superclasses and * interfaces as well as meta-annotations for the annotation type * (i.e. whether to use {@link AnnotatedElementUtils#hasAnnotation} * semantics instead of standard Java {@link Method#isAnnotationPresent}) * @since 5.0 */
public AnnotationMethodMatcher(Class<? extends Annotation> annotationType, boolean checkInherited) { Assert.notNull(annotationType, "Annotation type must not be null"); this.annotationType = annotationType; this.checkInherited = checkInherited; } @Override public boolean matches(Method method, Class<?> targetClass) { if (matchesMethod(method)) { return true; } // Proxy classes never have annotations on their redeclared methods. if (Proxy.isProxyClass(targetClass)) { return false; } // The method may be on an interface, so let's check on the target class as well. Method specificMethod = AopUtils.getMostSpecificMethod(method, targetClass); return (specificMethod != method && matchesMethod(specificMethod)); } private boolean matchesMethod(Method method) { return (this.checkInherited ? AnnotatedElementUtils.hasAnnotation(method, this.annotationType) : method.isAnnotationPresent(this.annotationType)); } @Override public boolean equals(Object other) { if (this == other) { return true; } if (!(other instanceof AnnotationMethodMatcher)) { return false; } AnnotationMethodMatcher otherMm = (AnnotationMethodMatcher) other; return this.annotationType.equals(otherMm.annotationType); } @Override public int hashCode() { return this.annotationType.hashCode(); } @Override public String toString() { return getClass().getName() + ": " + this.annotationType; } }