org.activiti.spring.components.aop.util.MetaAnnotationMethodMatcher.java Source code

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Here is the source code for org.activiti.spring.components.aop.util.MetaAnnotationMethodMatcher.java

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/*
 * Copyright 2010 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.
 *     You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 *     Unless required by applicable law or agreed to in writing, software
 *     distributed under the License is distributed on an "AS IS" BASIS,
 *     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *     See the License for the specific language governing permissions and
 *     limitations under the License.
 */
package org.activiti.spring.components.aop.util;

import org.springframework.aop.support.AopUtils;
import org.springframework.aop.support.annotation.AnnotationMethodMatcher;
import org.springframework.core.annotation.AnnotationUtils;

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

/**
 * this code is taken almost verbatim from the Spring Integration
 * project's source code where it's a static
 * private inner class.
 *
 * @author Mark Fisher
 *
 */
public class MetaAnnotationMethodMatcher extends AnnotationMethodMatcher {

    private final Class<? extends Annotation> annotationType;

    /**
     * Create a new AnnotationClassFilter for the given annotation type.
     *
     * @param annotationType the annotation type to look for
     */
    public MetaAnnotationMethodMatcher(Class<? extends Annotation> annotationType) {
        super(annotationType);
        this.annotationType = annotationType;
    }

    @Override
    @SuppressWarnings("rawtypes")
    public boolean matches(Method method, Class targetClass) {
        if (AnnotationUtils.getAnnotation(method, this.annotationType) != null) {
            return true;
        }
        // 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
                && (AnnotationUtils.getAnnotation(specificMethod, this.annotationType) != null));
    }
}