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1
21 package oracle.toplink.essentials.platform.xml;
23
24 import java.util.Stack  ;
25 import org.xml.sax.SAXException ;
26 import org.xml.sax.Locator ;
27 import org.xml.sax.Attributes ;
28 import org.xml.sax.ContentHandler ;
29 import org.w3c.dom.Attr ;
30 import org.w3c.dom.Document ;
31 import org.w3c.dom.Element ;
32 import org.w3c.dom.Node ;
33 import org.w3c.dom.ProcessingInstruction ;
34 import org.w3c.dom.Text ;
35
36 public class SAXDocumentBuilder implements ContentHandler {
37 private Document document;
38 private Stack nodes = new Stack ();
39 private XMLPlatform xmlPlatform;
40
41 public SAXDocumentBuilder() {
42 super();
43 nodes = new Stack ();
44 xmlPlatform = XMLPlatformFactory.getInstance().getXMLPlatform();
45 }
46
47 public Document getDocument() {
48 return document;
49 }
50
51 public Document getInitializedDocument() throws SAXException {
52 if (document == null) {
53 try {
54 document = xmlPlatform.createDocument();
55 nodes.push(document);
56 } catch (Exception e) {
57 throw new SAXException (e);
58 }
59 }
60 return document;
61 }
62
63 public void setDocumentLocator(Locator locator) {
64 }
65
66 public void startDocument() throws SAXException {
67 try {
68 document = xmlPlatform.createDocument();
69 nodes.push(document);
70 } catch (Exception e) {
71 throw new SAXException (e);
72 }
73 }
74
75 public void endDocument() throws SAXException {
76 nodes.pop();
77 }
78
79 public void startPrefixMapping(String prefix, String uri) throws SAXException {
80 }
81
82 public void endPrefixMapping(String prefix) throws SAXException {
83 }
84
85 public void startElement(String namespaceURI, String localName, String qName, Attributes atts) throws SAXException {
86 if ((null != namespaceURI) && ("".equals(namespaceURI))) {
87 namespaceURI = null;
88 }
89 Element element = getInitializedDocument().createElementNS(namespaceURI, qName);
90 Node parentNode = (Node )nodes.peek();
91 parentNode.appendChild(element);
92 nodes.push(element);
93
94 int numberOfAttributes = atts.getLength();
95 Attr attribute;
96 for (int x = 0; x < numberOfAttributes; x++) {
97 element.setAttributeNS(atts.getURI(x), atts.getQName(x), atts.getValue(x));
98 }
99 }
100
101 public void endElement(String namespaceURI, String localName, String qName) throws SAXException {
102 nodes.pop();
103 }
104
105 public void characters(char[] ch, int start, int length) throws SAXException {
106 String characters = new String (ch, start, length);
107 if (characters.trim().length() == 0) {
108 return;
109 }
110 Text text = getInitializedDocument().createTextNode(characters);
111 Node parentNode = (Node )nodes.peek();
112 parentNode.appendChild(text);
113 }
114
115 public void ignorableWhitespace(char[] ch, int start, int length) throws SAXException {
116 }
117
118 public void processingInstruction(String target, String data) throws SAXException {
119 ProcessingInstruction pi = getInitializedDocument().createProcessingInstruction(target, data);
120 Node parentNode = (Node )nodes.peek();
121 parentNode.appendChild(pi);
122 }
123
124 public void skippedEntity(String name) throws SAXException {
125 }
126 }
127 |
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