core/src/main/java/org/apache/commons/proxy2/interceptor/matcher/invocation/ReturnTypeMatcher.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.commons.proxy2.interceptor.matcher.invocation;

import org.apache.commons.proxy2.Invocation;
import org.apache.commons.proxy2.interceptor.matcher.InvocationMatcher;

public class ReturnTypeMatcher implements InvocationMatcher
{
//----------------------------------------------------------------------------------------------------------------------
// Fields
//----------------------------------------------------------------------------------------------------------------------

    private final boolean exactMatch;
    private final Class<?> returnType;

//----------------------------------------------------------------------------------------------------------------------
// Constructors
//----------------------------------------------------------------------------------------------------------------------

    public ReturnTypeMatcher(Class<?> returnType)
    {
        this(returnType, false);
    }

    public ReturnTypeMatcher(Class<?> returnType, boolean exactMatch)
    {
        this.returnType = returnType;
        this.exactMatch = exactMatch;
    }

//----------------------------------------------------------------------------------------------------------------------
// InvocationMatcher Implementation
//----------------------------------------------------------------------------------------------------------------------


    @Override
    public boolean matches(Invocation invocation)
    {
        return exactMatch ?
                returnType.equals(invocation.getMethod().getReturnType()) :
                returnType.isAssignableFrom(invocation.getMethod().getReturnType());
    }
}