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Java > Open Source Codes > org > springframework > aop > framework > adapter > MethodBeforeAdviceInterceptor


1 /*
2  * Copyright 2002-2007 the original author or authors.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16
17 package org.springframework.aop.framework.adapter;
18
19 import java.io.Serializable JavaDoc;
20
21 import org.aopalliance.intercept.MethodInterceptor;
22 import org.aopalliance.intercept.MethodInvocation;
23
24 import org.springframework.aop.MethodBeforeAdvice;
25 import org.springframework.util.Assert;
26
27 /**
28  * Interceptor to wrap am {@link org.springframework.aop.MethodBeforeAdvice}.
29  * Used internally by the AOP framework; application developers should not need
30  * to use this class directly.
31  *
32  * @author Rod Johnson
33  */
34 public class MethodBeforeAdviceInterceptor implements MethodInterceptor, Serializable JavaDoc {
35
36     private MethodBeforeAdvice advice;
37
38
39     /**
40      * Create a new MethodBeforeAdviceInterceptor for the given advice.
41      * @param advice the MethodBeforeAdvice to wrap
42      */
43     public MethodBeforeAdviceInterceptor(MethodBeforeAdvice advice) {
44         Assert.notNull(advice, "Advice must not be null");
45         this.advice = advice;
46     }
47
48     public Object JavaDoc invoke(MethodInvocation mi) throws Throwable JavaDoc {
49         this.advice.before(mi.getMethod(), mi.getArguments(), mi.getThis() );
50         return mi.proceed();
51     }
52
53 }
54
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