DescriptionHandler


1   /*
2    * Copyright 2001-2004 The Apache Software Foundation.
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  package org.apache.juddi.handler;
17  
18  import org.apache.juddi.datatype.Description;
19  import org.apache.juddi.datatype.RegistryObject;
20  import org.apache.juddi.util.xml.XMLUtils;
21  import org.w3c.dom.Element  ;
22  
23  /**
24   * "Knows about the creation and populating of Description objects.
25   * Returns Description."
26   *
27   * @author Steve Viens (sviens@apache.org)
28   */
29  public class DescriptionHandler extends AbstractHandler
30  {
31    public static final String   TAG_NAME = "description";
32  
33    private HandlerMaker maker = null;
34  
35    protected DescriptionHandler(HandlerMaker maker)
36    {
37      this.maker = maker;
38    }
39  
40    public RegistryObject unmarshal(Element   element)
41    {   
42      // Attributes
43      String   langCode = element.getAttribute("xml:lang");
44  
45      // Text Node Value
46      String   descValue = XMLUtils.getText(element);
47  
48      // Child Elements
49      // {none}
50  
51      // Only create Description instance if descValue not null and not zero-length
52      Description obj = null;
53      if ((descValue != null) && (descValue.trim().length() > 0)) 
54        obj = new Description(descValue,langCode);
55      
56      return obj;
57    }
58  
59    public void marshal(RegistryObject object,Element   parent)
60    {
61      Description descr = (Description)object;
62      Element   element = parent.getOwnerDocument().createElementNS(null,TAG_NAME);
63  
64      String   langCode = descr.getLanguageCode();
65      if ((langCode != null) && (langCode.trim().length() > 0))
66        element.setAttribute("xml:lang",langCode);
67  
68      String   descrValue = descr.getValue();
69      if (descrValue != null)
70        element.appendChild(parent.getOwnerDocument().createTextNode(descrValue));
71  
72      parent.appendChild(element);
73    }
74  
75  
76    /***************************************************************************/
77    /***************************** TEST DRIVER *********************************/
78    /***************************************************************************/
79  
80  
81    public static void main(String   args[])
82      throws Exception  
83    {
84    }
85  }
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