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Java > Open Source Codes > org > xmldb > xupdate > lexus > commands > AppendCommand


1 package org.xmldb.xupdate.lexus.commands;
2
3 /*
4  * The XML:DB Initiative Software License, Version 1.0
5  *
6  *
7  * Copyright (c) 2000-2003 The XML:DB Initiative. All rights
8  * reserved.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  *
14  * 1. Redistributions of source code must retain the above copyright
15  * notice, this list of conditions and the following disclaimer.
16  *
17  * 2. Redistributions in binary form must reproduce the above copyright
18  * notice, this list of conditions and the following disclaimer in
19  * the documentation and/or other materials provided with the
20  * distribution.
21  *
22  * 3. The end-user documentation included with the redistribution,
23  * if any, must include the following acknowledgment:
24  * "This product includes software developed by the
25  * XML:DB Initiative (http://www.xmldb.org/)."
26  * Alternately, this acknowledgment may appear in the software itself,
27  * if and wherever such third-party acknowledgments normally appear.
28  *
29  * 4. The name "XML:DB Initiative" must not be used to endorse or
30  * promote products derived from this software without prior written
31  * permission. For written permission, please contact info@xmldb.org.
32  *
33  * 5. Products derived from this software may not be called "XML:DB",
34  * nor may "XML:DB" appear in their name, without prior written
35  * permission of the XML:DB Initiative.
36  *
37  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
38  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
39  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
40  * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
41  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
42  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
43  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
44  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
45  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
46  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
47  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
48  * SUCH DAMAGE.
49  * ====================================================================
50  *
51  * This software consists of voluntary contributions made by many
52  * individuals on behalf of the XML:DB Initiative. For more information
53  * on the XML:DB Initiative, please see <http://www.xmldb.org/>.
54  */
55
56 import org.w3c.dom.NamedNodeMap JavaDoc;
57 import org.w3c.dom.Node JavaDoc;
58 import org.w3c.dom.NodeList JavaDoc;
59
60 /**
61  * Implementation of element <code>&lt;modifications:append&gt;</code>.
62  *
63  * @version $Id: AppendCommand.java,v 1.4 2003/05/21 08:17:38 jbreedveld Exp $
64  * @author <a HREF="http://www.smb-tec.com">SMB</a>
65  */
66 public class AppendCommand extends InsertCommand {
67
68   /**
69    * @param contextNode
70    */
71   public AppendCommand(Node JavaDoc contextNode) throws Exception JavaDoc {
72     super(contextNode);
73   }
74
75   /**
76    *
77    */
78   public Node JavaDoc execute() throws Exception JavaDoc {
79     if (result == null) {
80       return contextNode;
81     }
82
83     String JavaDoc query = (String JavaDoc) attributes.get("select");
84     selectNodes(query);
85
86     int child = -1;
87     String JavaDoc childStr = (String JavaDoc) attributes.get("child");
88     if (childStr != null && childStr.equals("last()")) {
89       child = -1;
90     } else if (childStr != null) {
91       child = Integer.parseInt(childStr);
92     }
93
94     NamedNodeMap JavaDoc attributes = result.getAttributes();
95     NodeList JavaDoc children = result.getChildNodes();
96
97     int selectionLength = selectionNodeList.getLength();
98     for (int i = 0; i < selectionLength; i++) {
99       Node JavaDoc current = selectionNodeList.item(i);
100       insertAttributes(attributes, current);
101
102       int childrenLength = children.getLength();
103       for (int j = 0; j < childrenLength; j++) {
104         NodeList JavaDoc currentChildren = current.getChildNodes();
105         if (0 < child && child <= currentChildren.getLength()) {
106           current.insertBefore(children.item(j).cloneNode(true), currentChildren.item(child - 1));
107         } else {
108           current.appendChild(children.item(j).cloneNode(true));
109         }
110       }
111     }
112     document.getDocumentElement().removeChild(result);
113
114     return contextNode;
115   }
116 }
117
118
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