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1
22 package org.jboss.test.xml;
23
24 import java.io.ByteArrayInputStream  ;
25 import java.io.StringReader ;
26 import javax.xml.parsers.SAXParserFactory ;
27 import javax.xml.parsers.SAXParser ;
28 import org.xml.sax.SAXException ;
29 import org.xml.sax.SAXParseException ;
30 import org.xml.sax.InputSource ;
31 import org.xml.sax.EntityResolver ;
32 import org.xml.sax.helpers.DefaultHandler ;
33 import org.jboss.xb.binding.JBossXBRuntimeException;
34
35
39 public class Validator
40 {
41 public static void assertValidXml(final String xsd, String xml)
42 {
43 assertValidXml(xsd, xml, null);
44 }
45
46 public static void assertValidXml(String xml, final EntityResolver resolver)
47 {
48 assertValidXml(null, xml, resolver);
49 }
50
51 private static void assertValidXml(final String xsd, String xml, final EntityResolver resolver)
52 {
53 SAXParserFactory factory = SAXParserFactory.newInstance();
54 factory.setValidating(true);
55 factory.setNamespaceAware(true);
56 SAXParser parser = null;
57 try
58 {
59 parser = factory.newSAXParser();
60 }
61 catch(Exception e)
62 {
63 throw new IllegalStateException ("Failed to instantiate a SAX parser: " + e.getMessage());
64 }
65
66 try
67 {
68 parser.getXMLReader().setFeature("http://apache.org/xml/features/validation/schema", true);
69 }
70 catch(SAXException e)
71 {
72 throw new IllegalStateException ("Schema validation feature is not supported by the parser: " + e.getMessage());
73 }
74
75 try
76 {
77 parser.parse(new ByteArrayInputStream (xml.getBytes()),
78 new DefaultHandler ()
79 {
80 public void warning(SAXParseException e)
81 {
82 }
83
84 public void error(SAXParseException e)
85 {
86 throw new JBossXBRuntimeException("Error", e);
87 }
88
89 public void fatalError(SAXParseException e)
90 {
91 throw new JBossXBRuntimeException("Fatal error", e);
92 }
93
94 public InputSource resolveEntity(String publicId, String systemId)
95 {
96 if(resolver != null)
97 {
98 try
99 {
100 return resolver.resolveEntity(publicId, systemId);
101 }
102 catch(Exception e)
103 {
104 throw new IllegalStateException ("Failed to resolveEntity " + systemId + ": " + systemId);
105 }
106 }
107 else
108 {
109 return new InputSource (new StringReader (xsd));
110 }
111 }
112 }
113 );
114 }
115 catch(Exception e)
116 {
117 throw new JBossXBRuntimeException("Parsing failed.", e);
118 }
119 }
120 }
121 |
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