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1   /*
2    * Copyright 2004-2008 the Seasar Foundation and the Others.
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, 
13   * either express or implied. See the License for the specific language
14   * governing permissions and limitations under the License.
15   */
16  package org.seasar.uruma.binding.context;
17  
18  import java.util.List;
19  
20  import org.seasar.framework.beans.PropertyDesc;
21  import org.seasar.uruma.context.ApplicationContext;
22  import org.seasar.uruma.core.UrumaMessageCodes;
23  import org.seasar.uruma.log.UrumaLogger;
24  
25  /**
26   * 任意のオブジェクトと {@link ApplicationContext} の間でバインディングを行うためのクラスです。<br />
27   * 
28   * @author y-komori
29   */
30  public class ApplicationContextBinder {
31      private static final UrumaLogger logger = UrumaLogger
32              .getLogger(ApplicationContextBinder.class);
33  
34      private ApplicationContextBinder() {
35  
36      }
37  
38      /**
39       * プロパティから {@link ApplicationContext} へ値をバインドします。<br />
40       * 対象となるプロパティは、<code>defs</code> で指定される {@link ApplicationContextDef}
41       * のリストです。<br />
42       * 
43       * @param target
44       *            ターゲットオブジェクト
45       * @param defs
46       *            {@link ApplicationContextDef} のリスト
47       * @param context
48       *            {@link ApplicationContext} オブジェクト
49       */
50      public static void exportObjects(final Object target,
51              final List<ApplicationContextDef> defs,
52              final ApplicationContext context) {
53          for (ApplicationContextDef def : defs) {
54              PropertyDesc pd = def.getPropertyDesc();
55              String name = def.getName();
56              Object value = pd.getValue(target);
57  
58              if (logger.isDebugEnabled()) {
59                  logger.log(UrumaMessageCodes.EXPORT_APPLICATION_CONTEXT,
60                          UrumaLogger.getObjectDescription(target), pd
61                                  .getPropertyName(), name, value);
62              }
63              context.setValue(name, value);
64          }
65      }
66  
67      /**
68       * {@link ApplicationContext} からプロパティへ値をバインドします。<br />
69       * 対象となるプロパティは、<code>defs</code> で指定される {@link ApplicationContextDef}
70       * のリストです。<br />
71       * 
72       * @param target
73       *            ターゲットオブジェクト
74       * @param defs
75       *            {@link ApplicationContextDef} のリスト
76       * @param context
77       *            {@link ApplicationContext} オブジェクト
78       */
79      public static void importObjects(final Object target,
80              final List<ApplicationContextDef> defs,
81              final ApplicationContext context) {
82          for (ApplicationContextDef def : defs) {
83              PropertyDesc pd = def.getPropertyDesc();
84              String name = def.getName();
85              Object value = context.getValue(name);
86  
87              if (logger.isDebugEnabled()) {
88                  logger.log(UrumaMessageCodes.IMPORT_APPLICATION_CONTEXT,
89                          UrumaLogger.getObjectDescription(target), pd
90                                  .getPropertyName(), name, value);
91              }
92  
93              pd.setValue(target, value);
94          }
95      }
96  }