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

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Here is the source code for org.activiti.spring.components.aop.util.MetaAnnotationMatchingPointcut.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.ClassFilter;
import org.springframework.aop.MethodMatcher;
import org.springframework.aop.Pointcut;
import org.springframework.aop.support.annotation.AnnotationClassFilter;
import org.springframework.util.Assert;

import java.lang.annotation.Annotation;

/**
 * this code is taken almost (99.99%) verbatim from the Spring Integration
 * project's source code where it's a static
 * private inner class.
 *
 * @author Mark Fisher
 */
public class MetaAnnotationMatchingPointcut implements Pointcut {

    private final ClassFilter classFilter;

    private final MethodMatcher methodMatcher;

    /**
     * Create a new MetaAnnotationMatchingPointcut for the given annotation type.
     *
     * @param classAnnotationType the annotation type to look for at the class level
     * @param checkInherited         whether to explicitly check the superclasses and
     *                            interfaces for the annotation type as well (even if the annotation type
     *                            is not marked as inherited itself)
     */
    public MetaAnnotationMatchingPointcut(Class<? extends Annotation> classAnnotationType, boolean checkInherited) {
        this.classFilter = new AnnotationClassFilter(classAnnotationType, checkInherited);
        this.methodMatcher = MethodMatcher.TRUE;
    }

    /**
     * Create a new MetaAnnotationMatchingPointcut for the given annotation type.
     *
     * @param classAnnotationType   the annotation type to look for at the class level
     *                             (can be <code>null</code>)
     * @param methodAnnotationType the annotation type to look for at the method level
     *                             (can be <code>null</code>)
     */
    public MetaAnnotationMatchingPointcut(Class<? extends Annotation> classAnnotationType,
            Class<? extends Annotation> methodAnnotationType) {

        Assert.isTrue((classAnnotationType != null || methodAnnotationType != null),
                "Either Class annotation type or Method annotation type needs to be specified (or both)");

        if (classAnnotationType != null) {
            this.classFilter = new AnnotationClassFilter(classAnnotationType);
        } else {
            this.classFilter = ClassFilter.TRUE;
        }

        if (methodAnnotationType != null) {
            this.methodMatcher = new MetaAnnotationMethodMatcher(methodAnnotationType);
        } else {
            this.methodMatcher = MethodMatcher.TRUE;
        }
    }

    public ClassFilter getClassFilter() {
        return this.classFilter;
    }

    public MethodMatcher getMethodMatcher() {
        return this.methodMatcher;
    }
}