001    /**
002     *
003     * Copyright 2003-2004 The Apache Software Foundation
004     *
005     *  Licensed under the Apache License, Version 2.0 (the "License");
006     *  you may not use this file except in compliance with the License.
007     *  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    
018    package org.apache.geronimo.gbean.runtime;
019    
020    import java.lang.reflect.InvocationTargetException;
021    import java.lang.reflect.Method;
022    
023    import net.sf.cglib.reflect.FastClass;
024    import net.sf.cglib.reflect.FastMethod;
025    
026    /**
027     * @version $Rev: 355877 $ $Date: 2005-12-10 18:48:27 -0800 (Sat, 10 Dec 2005) $
028     */
029    public final class FastMethodInvoker implements MethodInvoker {
030        private final FastMethod method;
031    
032        public FastMethodInvoker(Method method) {
033            this.method = FastClass.create(method.getDeclaringClass()).getMethod(method);
034        }
035    
036        public Object invoke(final Object target, final Object[] arguments) throws Exception {
037            try {
038                return method.invoke(target, arguments);
039            } catch (InvocationTargetException e) {
040                Throwable cause = e.getTargetException();
041                if (cause instanceof Exception) {
042                    throw (Exception) cause;
043                } else if (cause instanceof Error) {
044                    throw (Error) cause;
045                }
046                throw e;
047            }
048        }
049    }