001    /**
002     *  Licensed to the Apache Software Foundation (ASF) under one or more
003     *  contributor license agreements.  See the NOTICE file distributed with
004     *  this work for additional information regarding copyright ownership.
005     *  The ASF licenses this file to You under the Apache License, Version 2.0
006     *  (the "License"); you may not use this file except in compliance with
007     *  the License.  You may obtain a copy of the License at
008     *
009     *     http://www.apache.org/licenses/LICENSE-2.0
010     *
011     *  Unless required by applicable law or agreed to in writing, software
012     *  distributed under the License is distributed on an "AS IS" BASIS,
013     *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     *  See the License for the specific language governing permissions and
015     *  limitations under the License.
016     */
017    package org.apache.geronimo.gbean.runtime;
018    
019    import java.lang.reflect.Method;
020    import java.lang.reflect.InvocationTargetException;
021    
022    /**
023     * @version $Rev: 706640 $ $Date: 2008-10-21 14:44:05 +0000 (Tue, 21 Oct 2008) $
024     */
025    public final class ReflectionMethodInvoker implements MethodInvoker {
026        private final Method method;
027    
028        public ReflectionMethodInvoker(Method method) {
029            this.method = method;
030        }
031    
032        public Object invoke(final Object target, final Object[] arguments) throws Exception {
033            try {
034                return method.invoke(target, arguments);
035            } catch (InvocationTargetException e) {
036                Throwable cause = e.getTargetException();
037                if (cause instanceof Exception) {
038                    throw (Exception) cause;
039                } else if (cause instanceof Error) {
040                    throw (Error) cause;
041                }
042                throw e;
043            }
044        }
045    }