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: * Filter that restricts matching of a pointcut or introduction to
21: * a given set of target classes.
22: *
23: * <p>Can be used as part of a {@link Pointcut} or for the entire
24: * targeting of an {@link IntroductionAdvisor}.
25: *
26: * @author Rod Johnson
27: * @see Pointcut
28: * @see MethodMatcher
29: */
30: public interface ClassFilter {
31:
32: /**
33: * Should the pointcut apply to the given interface or target class?
34: * @param clazz the candidate target class
35: * @return whether the advice should apply to the given target class
36: */
37: boolean matches(Class clazz);
38:
39: /**
40: * Canonical instance of a ClassFilter that matches all classes.
41: */
42: ClassFilter TRUE = TrueClassFilter.INSTANCE;
43:
44: }
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