1 /*
2 * Copyright 2002-2012 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 * Core Spring pointcut abstraction.
21 *
22 * <p>A pointcut is composed of a {@link ClassFilter} and a {@link MethodMatcher}.
23 * Both these basic terms and a Pointcut itself can be combined to build up combinations
24 * (e.g. through {@link org.springframework.aop.support.ComposablePointcut}).
25 *
26 * @author Rod Johnson
27 * @see ClassFilter
28 * @see MethodMatcher
29 * @see org.springframework.aop.support.Pointcuts
30 * @see org.springframework.aop.support.ClassFilters
31 * @see org.springframework.aop.support.MethodMatchers
32 */
33 public interface Pointcut {
34
35 /**
36 * Return the ClassFilter for this pointcut.
37 * @return the ClassFilter (never {@code null})
38 */
39 ClassFilter getClassFilter();
40
41 /**
42 * Return the MethodMatcher for this pointcut.
43 * @return the MethodMatcher (never {@code null})
44 */
45 MethodMatcher getMethodMatcher();
46
47
48 /**
49 * Canonical Pointcut instance that always matches.
50 */
51 Pointcut TRUE = TruePointcut.INSTANCE;
52
53 }