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Java > Open Source Codes > org > apache > geronimo > gbean > runtime > ReflectionMethodInvoker


1 /**
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements. See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License. You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 package org.apache.geronimo.gbean.runtime;
18
19 import java.lang.reflect.Method JavaDoc;
20 import java.lang.reflect.InvocationTargetException JavaDoc;
21
22 /**
23  * @version $Rev: 476049 $ $Date: 2006-11-16 23:35:17 -0500 (Thu, 16 Nov 2006) $
24  */
25 public final class ReflectionMethodInvoker implements MethodInvoker {
26     private final Method JavaDoc method;
27
28     public ReflectionMethodInvoker(Method JavaDoc method) {
29         this.method = method;
30     }
31
32     public Object JavaDoc invoke(final Object JavaDoc target, final Object JavaDoc[] arguments) throws Exception JavaDoc {
33         try {
34             return method.invoke(target, arguments);
35         } catch (InvocationTargetException JavaDoc e) {
36             Throwable JavaDoc cause = e.getTargetException();
37             if (cause instanceof Exception JavaDoc) {
38                 throw (Exception JavaDoc) cause;
39             } else if (cause instanceof Error JavaDoc) {
40                 throw (Error JavaDoc) cause;
41             }
42             throw e;
43         }
44     }
45 }
46
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