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21 package oracle.toplink.essentials.platform.xml.jaxp;
23
24 import java.net.URL  ;
25 import javax.xml.parsers.DocumentBuilder ;
26 import javax.xml.parsers.DocumentBuilderFactory ;
27 import oracle.toplink.essentials.platform.xml.XMLNamespaceResolver;
28 import oracle.toplink.essentials.platform.xml.XMLParser;
29 import oracle.toplink.essentials.platform.xml.XMLPlatform;
30 import oracle.toplink.essentials.platform.xml.XMLPlatformException;
31 import oracle.toplink.essentials.platform.xml.XMLTransformer;
32 import org.w3c.dom.Attr ;
33 import org.w3c.dom.DOMImplementation ;
34 import org.w3c.dom.Document ;
35 import org.w3c.dom.DocumentType ;
36 import org.w3c.dom.Element ;
37 import org.w3c.dom.Node ;
38 import org.w3c.dom.NodeList ;
39 import org.w3c.dom.Text ;
40 import org.xml.sax.ErrorHandler ;
41
42 public class JAXPPlatform implements XMLPlatform {
43 public JAXPPlatform() {
44 super();
45 }
46
47
57 public NodeList selectNodesAdvanced(Node contextNode, String xPath, XMLNamespaceResolver xmlNamespaceResolver) throws XMLPlatformException {
58 throw oracle.toplink.essentials.exceptions.ValidationException.operationNotSupported("selectNodesAdvanced");
59 }
60
61
69 public Node selectSingleNodeAdvanced(Node contextNode, String xPath, XMLNamespaceResolver xmlNamespaceResolver) throws XMLPlatformException {
70 throw oracle.toplink.essentials.exceptions.ValidationException.operationNotSupported("selectSingleNodeAdvanced");
71 }
72
73 public boolean isWhitespaceNode(Text text) {
74 String value = text.getNodeValue();
75 if (null == value) {
76 return false;
77 } else {
78 return value.trim().equals("");
79 }
80 }
81
82 public XMLParser newXMLParser() {
83 return new JAXPParser();
84 }
85
86 public XMLTransformer newXMLTransformer() {
87 return new JAXPTransformer();
88 }
89
90 public Document createDocument() throws XMLPlatformException {
91 try {
92 DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
93 documentBuilderFactory.setNamespaceAware(true);
94 DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
95 return documentBuilder.newDocument();
96 } catch (Exception e) {
97 throw XMLPlatformException.xmlPlatformCouldNotCreateDocument(e);
98 }
99 }
100
101 public Document createDocumentWithPublicIdentifier(String name, String publicIdentifier, String systemIdentifier) throws XMLPlatformException {
102 try {
103 if (null == publicIdentifier) {
104 return createDocumentWithSystemIdentifier(name, systemIdentifier);
105 }
106
107 DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
108 documentBuilderFactory.setNamespaceAware(true);
109 DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
110 DOMImplementation domImpl = documentBuilder.getDOMImplementation();
111 DocumentType docType = domImpl.createDocumentType(name, publicIdentifier, systemIdentifier);
112 Document document = domImpl.createDocument(null, name, docType);
113 return document;
114 } catch (Exception e) {
115 throw XMLPlatformException.xmlPlatformCouldNotCreateDocument(e);
116 }
117 }
118
119 public Document createDocumentWithSystemIdentifier(String name, String systemIdentifier) throws XMLPlatformException {
120 try {
121 Document document = null;
122
123 if (null == systemIdentifier) {
124 document = createDocument();
125 Element rootElement = document.createElement(name);
126 document.appendChild(rootElement);
127 return document;
128 }
129
130 DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
131 documentBuilderFactory.setNamespaceAware(true);
132 DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
133 DOMImplementation domImpl = documentBuilder.getDOMImplementation();
134 DocumentType docType = domImpl.createDocumentType(name, null, systemIdentifier);
135 document = domImpl.createDocument(null, name, docType);
136 return document;
137 } catch (Exception e) {
138 throw XMLPlatformException.xmlPlatformCouldNotCreateDocument(e);
139 }
140 }
141
142 public String resolveNamespacePrefix(Node contextNode, String namespacePrefix) throws XMLPlatformException {
143 if (namespacePrefix.equals(contextNode.getPrefix())) {
144 return contextNode.getNamespaceURI();
145 }
146
147 if (contextNode.getNodeType() == Node.ELEMENT_NODE) {
148 Element contextElement = (Element )contextNode;
149 Attr namespaceDeclaration = contextElement.getAttributeNode("xmlns:" + namespacePrefix);
150 if (null != namespaceDeclaration) {
151 return namespaceDeclaration.getValue();
152 }
153 }
154
155 Node parentNode = contextNode.getParentNode();
156 if (parentNode.getNodeType() == Node.ELEMENT_NODE) {
157 return resolveNamespacePrefix((Element )parentNode, namespacePrefix);
158 }
159
160 return null;
161 }
162
163 public boolean validateDocument(Document document, URL xmlSchemaURL, ErrorHandler errorHandler) throws XMLPlatformException {
164 return true;
165 }
166 }
167 |
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