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1 package org.objectweb.celtix.tools.common.dom;
2
3 import java.io.IOException  ;
4 import java.io.InputStream ;
5 import java.util.logging.Level ;
6 import java.util.logging.Logger ;
7
8 import javax.xml.XMLConstants ;
9 import javax.xml.parsers.DocumentBuilder ;
10 import javax.xml.parsers.DocumentBuilderFactory ;
11 import javax.xml.transform.stream.StreamSource ;
12 import javax.xml.validation.Schema ;
13 import javax.xml.validation.SchemaFactory ;
14
15 import org.w3c.dom.Document ;
16 import org.xml.sax.SAXException ;
17
18 import org.objectweb.celtix.common.logging.LogUtils;
19
20
24 public class ExtendedDocumentBuilder {
25
26 private static final Logger LOG = LogUtils.getL7dLogger(ExtendedDocumentBuilder.class);
27
28 private final DocumentBuilderFactory parserFactory;
29 private DocumentBuilder parser;
30
31 private SchemaFactory schemaFactory;
32 private Schema schema;
33
34 public ExtendedDocumentBuilder() {
35 parserFactory = DocumentBuilderFactory.newInstance();
36 parserFactory.setNamespaceAware(true);
37 }
38
39 private InputStream getSchemaLocation() {
40 String toolspec = "/org/objectweb/celtix/tools/common/toolspec/tool-specification.xsd";
41 return getClass().getResourceAsStream(toolspec);
42 }
43
44 public void setValidating(boolean validate) {
45 if (validate) {
46 this.schemaFactory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
47 try {
48 this.schema = schemaFactory.newSchema(new StreamSource (getSchemaLocation()));
49 } catch (org.xml.sax.SAXException e) {
50 LOG.log(Level.SEVERE, "SCHEMA_FACTORY_EXCEPTION_MSG");
51 }
52 this.parserFactory.setSchema(this.schema);
53 }
54 }
55
56
57 private DocumentBuilder getParser() {
58 if (parser == null) {
59 try {
60 parser = parserFactory.newDocumentBuilder();
61 } catch (javax.xml.parsers.ParserConfigurationException e) {
62 LOG.log(Level.SEVERE, "NEW_DOCUMENT_BUILDER_EXCEPTION_MSG");
63 }
64 }
65 return parser;
66 }
67
68 public Document parse(InputStream in) throws SAXException , IOException {
69 if (in == null && LOG.isLoggable(Level.FINE)) {
70 LOG.fine("ExtendedDocumentBuilder trying to parse a null inputstream");
71 }
72 return getParser().parse(in);
73 }
74
75 }
76 |
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