Autowiring


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.service;
16  
17  /**
18   * Service that wires properties of object with services defined in the registry.
19   * Different strategies are available. The standard strategies are defined
20   * in {@link AutowiringStrategy}.
21   * 
22   * @author Achim Huegen
23   */
24  public interface Autowiring
25  {
26      /**
27       * Autowires the properties of <code>target</code> defined in <code>propertyNames</code>.
28       * All available strategies are tried until one strategy succeeds. 
29       * @param target  the target object whose properties should be wired
30       * @param propertyNames  the properties to wire
31       * @return the wired target object
32       */
33      public Object   autowireProperties(Object   target, String  [] propertyNames);
34      
35      /**
36       * Autowires all writable properties of <code>target</code>.
37       * All available strategies are tried until one strategy succeeds. 
38       * @param target  the target object whose properties should be wired
39       * @return the wired target object
40       */
41      public Object   autowireProperties(Object   target);
42      
43      /**
44       * Autowires the properties of <code>target</code> defined in <code>propertyNames</code>
45       * using a certain strategy.
46       * @param strategy  name of the strategy to be used. Standard strategies are defined
47       *                  in {@link AutowiringStrategy}
48       * @param target  the target object whose properties should be wired
49       * @param propertyNames  the properties to wire
50       * @return the wired target object
51       */
52      public Object   autowireProperties(String   strategy, Object   target, String  [] propertyNames);
53      
54      /**
55       * Autowires all writable properties of <code>target</code> using a certain strategy.
56       * @param strategy  name of the strategy to be used. Standard strategies are defined
57       *                  in {@link AutowiringStrategy}
58       * @param target  the target object whose properties should be wired
59       * @return the wired target object
60       */
61      public Object   autowireProperties(String   strategy, Object   target);
62  
63  }
64
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