Contribution


1   // Copyright 2007 The Apache Software Foundation
2   //
3   // Licensed under the Apache License, Version 2.0 (the "License");
4   // you may not use this file except in compliance with the License.
5   // You may obtain a copy of the License at
6   //
7   //     http://www.apache.org/licenses/LICENSE-2.0
8   //
9   // Unless required by applicable law or agreed to in writing, software
10  // distributed under the License is distributed on an "AS IS" BASIS,
11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  // See the License for the specific language governing permissions and
13  // limitations under the License.
14  
15  package org.apache.hivemind.annotations.definition;
16  
17  import java.lang.annotation.Documented  ;
18  import java.lang.annotation.ElementType  ;
19  import java.lang.annotation.Retention  ;
20  import java.lang.annotation.RetentionPolicy  ;
21  import java.lang.annotation.Target  ;
22  
23  /**
24   * Marks a method in an annotated module as contribution to a configuration point.
25   * The method can have one of two different signatures:
26   * 1. A void return type and a single parameter that must be compatible with the type of the configuration. 
27   * 2. No parameter and a return type that must be compatible with the type of the configuration. 
28   *  
29   * @author Achim Huegen
30   */
31  @Documented  
32  @Retention  (value = RetentionPolicy.RUNTIME)
33  @Target  (value = ElementType.METHOD)
34  public @interface Contribution {
35      String   configurationId();
36  }
37

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