ExportedPreferences


1   /*******************************************************************************
2    * Copyright (c) 2004, 2005 IBM Corporation and others.
3    * All rights reserved. This program and the accompanying materials
4    * are made available under the terms of the Eclipse Public License v1.0
5    * which accompanies this distribution, and is available at
6    * http://www.eclipse.org/legal/epl-v10.html
7    * 
8    * Contributors:
9    *     IBM Corporation - initial API and implementation
10   *******************************************************************************/
11  package org.eclipse.core.internal.preferences;
12  
13  import org.eclipse.core.runtime.preferences.IExportedPreferences;
14  
15  /**
16   * @since 3.0
17   */
18  public class ExportedPreferences extends EclipsePreferences implements IExportedPreferences {
19  
20      private boolean isExportRoot = false;
21      private String   version;
22  
23      public static IExportedPreferences newRoot() {
24          return new ExportedPreferences(null, ""); //$NON-NLS-1$
25      }
26  
27      protected ExportedPreferences(EclipsePreferences parent, String   name) {
28          super(parent, name);
29      }
30  
31      /*
32       * @see org.eclipse.core.runtime.preferences.IExportedPreferences#isExportRoot()
33       */
34      public boolean isExportRoot() {
35          return isExportRoot;
36      }
37  
38      /*
39       * Internal method called only by the import/export mechanism.
40       */
41      public void setExportRoot() {
42          isExportRoot = true;
43      }
44  
45      /*
46       * Internal method called only by the import/export mechanism to
47       * validate bundle versions.
48       */
49      public String   getVersion() {
50          return version;
51      }
52  
53      /*
54       * Internal method called only by the import/export mechanism to
55       * validate bundle versions.
56       */
57      public void setVersion(String   version) {
58          this.version = version;
59      }
60  
61      protected EclipsePreferences internalCreate(EclipsePreferences nodeParent, String   nodeName, Object   context) {
62          return new ExportedPreferences(nodeParent, nodeName);
63      }
64  
65      /*
66       * Return a string representation of this object. To be used for 
67       * debugging purposes only.
68       */
69      public String   toString() {
70          StringBuffer   buffer = new StringBuffer  ();
71          if (isExportRoot)
72              buffer.append("* "); //$NON-NLS-1$
73          buffer.append(absolutePath());
74          if (version != null)
75              buffer.append(" (" + version + ')'); //$NON-NLS-1$
76          return buffer.toString();
77      }
78  }
79
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