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


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,
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47  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
48  * SUCH DAMAGE.
49  * ====================================================================
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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.apache.xml.utils.PrefixResolver;
57 import org.apache.xml.utils.PrefixResolverDefault;
58 import org.w3c.dom.Document JavaDoc;
59 import org.w3c.dom.Element JavaDoc;
60 import org.w3c.dom.Node JavaDoc;
61
62 /**
63  *
64  * @version $Id: InsertElement.java,v 1.8 2003/05/21 08:17:38 jbreedveld Exp $
65  * @author <a HREF="http://www.smb-tec.com">SMB</a>
66  */
67 public class InsertElement extends InsertStates {
68
69   /**
70    *
71    */
72   public InsertElement() {
73     super();
74   }
75
76
77   /**
78    *
79    */
80   public Node JavaDoc execute(Node JavaDoc contextNode) throws Exception JavaDoc {
81     if (attributes == null) {
82       throw new Exception JavaDoc("no attributes for element constructor!");
83     }
84     String JavaDoc namespaceURI = (String JavaDoc) attributes.get("namespace");
85     String JavaDoc qName = (String JavaDoc) attributes.get("name");
86     if (qName == null) {
87       throw new Exception JavaDoc("no name attribute for element constructor!");
88     }
89     Document JavaDoc document = contextNode.getOwnerDocument();
90     Node JavaDoc element;
91     if (namespaceURI != null && namespaceURI.equals("")) {
92       namespaceURI = null;
93     }
94     element = document.createElementNS(namespaceURI, qName);
95     // now check namespaceURI != null no longer qName.indexOf( ":" )>=0
96 if (namespaceURI != null) {
97       String JavaDoc prefix = element.getPrefix();
98       if (prefix == null) {
99         /**
100          * This is the default xmlns="namespace-uri" attribute case.
101          * Look for default xmlns="namespace-uri" attributes in parent elements
102          */
103         if (!hasDefaultNamespace(contextNode, namespaceURI)) {
104           ((Element JavaDoc) element).setAttributeNS("http://www.w3.org/2000/xmlns/",
105                   "xmlns", namespaceURI);
106         }
107       } else {
108         /**
109          * Look for existing namespace declaration with same prefix.
110          * If it exists a namespace declaration doesn't has to be added
111          * If it exists but the URI is not the same a namespace
112          * declaration has to be added
113          *
114          * Other prefixes with same URI are ignored. This is something to
115          * talk about on mailinglist and a to WD
116          */
117         PrefixResolver prefixResolver = new PrefixResolverDefault(contextNode);
118         String JavaDoc uri = prefixResolver.getNamespaceForPrefix(prefix);
119         if (uri == null || !uri.equalsIgnoreCase(namespaceURI)) {
120           ((Element JavaDoc) element).setAttributeNS("http://www.w3.org/2000/xmlns/",
121                   "xmlns:" + prefix, namespaceURI);
122         }
123       }
124     }
125     int charactersSize = characters.size();
126     for (int i = 0; i < charactersSize; i++) {
127       element.appendChild(document.createTextNode((String JavaDoc) characters.elementAt(i)));
128     }
129     return contextNode.appendChild(element);
130   }
131 }
132
133
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