1   /*
2    * Copyright 1999-2004 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.commons.jxpath.ri.model.dom;
17  
18  import org.apache.commons.jxpath.AbstractFactory;
19  import org.apache.commons.jxpath.JXPathContext;
20  import org.apache.commons.jxpath.Pointer;
21  import org.w3c.dom.Document;
22  import org.w3c.dom.Node;
23  
24  /***
25   * Test AbstractFactory.
26   *
27   * @author Dmitri Plotnikov
28   * @version $Revision: 1.6 $ $Date: 2004/06/29 22:58:17 $
29   */
30  public class TestDOMFactory extends AbstractFactory {
31  
32      /***
33       * Return <b>false</b> if this factory cannot create the requested object.
34       */
35      public boolean createObject(
36          JXPathContext context,
37          Pointer pointer,
38          Object parent,
39          String name,
40          int index) 
41      {
42          if (name.equals("location")
43              || name.equals("address")
44              || name.equals("street")) {
45              addDOMElement((Node) parent, index, name, null);
46              return true;
47          }
48          if (name.startsWith("price:")) {
49              String namespaceURI = context.getNamespaceURI("price");
50              addDOMElement((Node) parent, index, name, namespaceURI);
51              return true;
52          }
53          return false;
54      }
55  
56      private void addDOMElement(Node parent, int index, String tag, String namespaceURI) {
57          Node child = parent.getFirstChild();
58          int count = 0;
59          while (child != null) {
60              if (child.getNodeName().equals(tag)) {
61                  count++;
62              }
63              child = child.getNextSibling();
64          }
65  
66          // Keep inserting new elements until we have index + 1 of them
67          while (count <= index) {
68              Document doc = parent.getOwnerDocument();
69              Node newElement;
70              if (namespaceURI == null) {
71                  newElement = doc.createElement(tag);
72              } 
73              else {
74                  newElement = doc.createElementNS(namespaceURI, tag);
75              }
76         
77              parent.appendChild(newElement);
78              count++;
79          }
80      }
81  
82      public boolean declareVariable(JXPathContext context, String name) {
83          return false;
84      }
85  }