01: /*
02: * Copyright 2002-2007 the original author or authors.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
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;
50:
51: }
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