FastMethodInvoker.java

/**
 *
 * Copyright 2003-2004 The Apache Software Foundation
 *
 *  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.apache.geronimo.gbean.runtime;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

import net.sf.cglib.reflect.FastClass;
import net.sf.cglib.reflect.FastMethod;

/**
 * @version $Rev$ $Date$
 */
public final class FastMethodInvoker implements MethodInvoker {
    private final FastMethod method;

    public FastMethodInvoker(Method method) {
        this.method = FastClass.create(method.getDeclaringClass()).getMethod(method);
    }

    public Object invoke(final Object target, final Object[] arguments) throws Exception {
        try {
            return method.invoke(target, arguments);
        } catch (InvocationTargetException e) {
            Throwable cause = e.getTargetException();
            if (cause instanceof Exception) {
                throw (Exception) cause;
            } else if (cause instanceof Error) {
                throw (Error) cause;
            }
            throw e;
        }
    }
}