core/src/main/java/org/apache/commons/proxy2/stub/AnnotationInvoker.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.stub;

import java.lang.reflect.Method;

import org.apache.commons.proxy2.Invoker;
import org.apache.commons.proxy2.ProxyUtils;

public final class AnnotationInvoker implements Invoker
{
    private static final long serialVersionUID = 1L;

    public static final AnnotationInvoker INSTANCE = new AnnotationInvoker();

    @Override
    public Object invoke(Object proxy, Method method, Object[] arguments) throws Throwable
    {
        final Object result = method.getDefaultValue();
        return result == null && method.getReturnType().isPrimitive() ? ProxyUtils.nullValue(method.getReturnType())
                : result;
    }

}