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1 package com.thaiopensource.validate.xerces;
2
3 import com.thaiopensource.util.PropertyMap;
4 import com.thaiopensource.util.PropertyId;
5 import com.thaiopensource.validate.IncorrectSchemaException;
6 import com.thaiopensource.validate.Schema;
7 import com.thaiopensource.validate.SchemaReader;
8 import com.thaiopensource.validate.ValidateProperty;
9 import com.thaiopensource.validate.Option;
10 import com.thaiopensource.validate.xerces.SAXXMLErrorHandler;
11 import com.thaiopensource.validate.xerces.SchemaImpl;
12 import org.apache.xerces.parsers.CachingParserPool;
13 import org.apache.xerces.parsers.XMLGrammarPreparser;
14 import org.apache.xerces.util.SymbolTable;
15 import org.apache.xerces.util.SynchronizedSymbolTable;
16 import org.apache.xerces.util.XMLGrammarPoolImpl;
17 import org.apache.xerces.util.EntityResolverWrapper;
18 import org.apache.xerces.xni.XNIException;
19 import org.apache.xerces.xni.grammars.XMLGrammarDescription;
20 import org.apache.xerces.xni.grammars.XMLGrammarPool;
21 import org.apache.xerces.xni.parser.XMLInputSource;
22 import org.xml.sax.ErrorHandler  ;
23 import org.xml.sax.InputSource ;
24 import org.xml.sax.SAXException ;
25 import org.xml.sax.EntityResolver ;
26
27 import java.io.IOException ;
28
29 class SchemaReaderImpl implements SchemaReader {
30 private static final PropertyId[] supportedPropertyIds = {
31 ValidateProperty.ERROR_HANDLER,
32 ValidateProperty.ENTITY_RESOLVER,
33 };
34 public Schema createSchema(InputSource in, PropertyMap properties)
35 throws IOException , SAXException , IncorrectSchemaException {
36 SymbolTable symbolTable = new SymbolTable();
37 XMLGrammarPreparser preparser = new XMLGrammarPreparser(symbolTable);
38 XMLGrammarPool grammarPool = new XMLGrammarPoolImpl();
39 preparser.registerPreparser(XMLGrammarDescription.XML_SCHEMA, null);
40 preparser.setGrammarPool(grammarPool);
41 ErrorHandler eh = ValidateProperty.ERROR_HANDLER.get(properties);
42 SAXXMLErrorHandler xeh = new SAXXMLErrorHandler(eh);
43 preparser.setErrorHandler(xeh);
44 EntityResolver er = ValidateProperty.ENTITY_RESOLVER.get(properties);
45 if (er != null)
46 preparser.setEntityResolver(new EntityResolverWrapper(er));
47 try {
48 preparser.preparseGrammar(XMLGrammarDescription.XML_SCHEMA, toXMLInputSource(in));
49 }
50 catch (XNIException e) {
51 throw ValidatorImpl.toSAXException(e);
52 }
53 if (xeh.getHadError())
54 throw new IncorrectSchemaException();
55 return new SchemaImpl(new SynchronizedSymbolTable(symbolTable),
56 new CachingParserPool.SynchronizedGrammarPool(grammarPool),
57 properties,
58 supportedPropertyIds);
59 }
60
61 public Option getOption(String uri) {
62 return null;
63 }
64
65 private static XMLInputSource toXMLInputSource(InputSource in) {
66 XMLInputSource xin = new XMLInputSource(in.getPublicId(), in.getSystemId(), null);
67 xin.setByteStream(in.getByteStream());
68 xin.setCharacterStream(in.getCharacterStream());
69 xin.setEncoding(in.getEncoding());
70 return xin;
71 }
72 }
73 |
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