AspectJPrecedenceInformation


1   /*
2    * Copyright 2002-2006 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.aspectj;
18  
19  import org.springframework.core.Ordered;
20  
21  /**
22   * Interface to be implemented by types that can supply the information
23   * needed to sort advice/advisors by AspectJ's precedence rules.
24   *
25   * @author Adrian Colyer
26   * @since 2.0
27   * @see org.springframework.aop.aspectj.autoproxy.AspectJPrecedenceComparator
28   */
29  public interface AspectJPrecedenceInformation extends Ordered {
30  
31      // Implementation note:
32      // We need the level of indirection this interface provides as otherwise the
33      // AspectJPrecedenceComparator must ask an Advisor for its Advice in all cases
34      // in order to sort advisors. This causes problems with the
35      // InstantiationModelAwarePointcutAdvisor which needs to delay creating
36      // its advice for aspects with non-singleton instantiation models.
37  
38      /**
39       * The name of the aspect (bean) in which the advice was declared.
40       */
41      String   getAspectName();
42  
43      /**
44       * The declaration order of the advice member within the aspect.
45       */
46      int getDeclarationOrder();
47  
48      /**
49       * Return whether this is a before advice.
50       */
51      boolean isBeforeAdvice();
52  
53      /**
54       * Return whether this is an after advice.
55       */
56      boolean isAfterAdvice();
57  
58  }
59
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