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Java > Open Source Codes > org > springframework > aop > IntroductionAdvisor


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;
18
19 /**
20  * Superinterface for advisors that perform one or more AOP <b>introductions</b>.
21  *
22  * <p>This interface cannot be implemented directly; subinterfaces must
23  * provide the advice type implementing the introduction.
24  *
25  * <p>Introduction is the implementation of additional interfaces
26  * (not implemented by a target) via AOP advice.
27  *
28  * @author Rod Johnson
29  * @since 04.04.2003
30  * @see IntroductionInterceptor
31  */

32 public interface IntroductionAdvisor extends Advisor, IntroductionInfo {
33     
34     /**
35      * Return the filter determining which target classes this introduction
36      * should apply to.
37      * <p>This represents the class part of a pointcut. Note that method
38      * matching doesn't make sense to introductions.
39      * @return the class filter
40      */

41     ClassFilter getClassFilter();
42     
43     /**
44      * Can the advised interfaces be implemented by the introduction advice?
45      * Invoked before adding an IntroductionAdvisor.
46      * @throws IllegalArgumentException if the advised interfaces can't be
47      * implemented by the introduction advice
48      */

49     void validateInterfaces() throws IllegalArgumentException JavaDoc;
50
51 }
52
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