Mercurial > hg > MetaDataManager

comparison src/de/mpiwg/itgroup/metadataManager/validation/IndexMetaValidator.java @ 1:2267d8c80a99

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intial
author dwinter
date Sun, 23 Oct 2011 21:29:45 +0200
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0:90a19cbda471 1:2267d8c80a99
1 package de.mpiwg.itgroup.metadataManager.validation;
2
3 import java.io.ByteArrayInputStream;
4 import java.io.IOException;
5 import java.io.InputStream;
6 import java.io.StringReader;
7 import java.io.UnsupportedEncodingException;
8
9 import org.apache.log4j.Logger;
10 import org.jdom.JDOMException;
11 import org.jdom.input.SAXBuilder;
12 import org.xml.sax.SAXException;
13 import org.xml.sax.SAXParseException;
14 import org.xml.sax.helpers.DefaultHandler;
15
16 public class IndexMetaValidator {
17
18 private Logger logger = Logger.getRootLogger();
19
20 public static boolean validate(String indexMeta) throws UnsupportedEncodingException{
21 IndexMetaValidator iv = new IndexMetaValidator();
22 InputStream is = new ByteArrayInputStream(indexMeta.getBytes("utf-8"));
23
24 String schemaUrl="/Users/dwinter/Documents/Projekte/ECHO-eSciDoc-MPDL/escidocMPIWG/MetaDataManager/src/de/mpiwg/itgroup/metadataManager/validation/data/index_meta.xsd";
25
26 iv.validateSchema(schemaUrl, is);
27 return false;}
28
29
30
31 public boolean validateSchema(String SchemaUrl, InputStream xmlDocumentStream) {
32 try { //Create SAXBuilder object
33 SAXBuilder saxBuilder = new SAXBuilder(
34 "org.apache.xerces.parsers.SAXParser", true);
35
36 //Set SAXBuilder parser to be a validating parser
37 saxBuilder.setValidation(true);
38 saxBuilder.setFeature(
39 "http://apache.org/xml/features/validation/schema", true);
40 saxBuilder.setFeature(
41 "http://apache.org/xml/features/validation/schema-full-checking",true);
42 saxBuilder.setProperty(
43 "http://apache.org/xml/properties/schema/external-noNamespaceSchemaLocation",SchemaUrl);
44
45 //Create a ErrorHandler and set ErrorHandler on parser.
46 Validator handler = new Validator();
47 saxBuilder.setErrorHandler(handler);
48 //Parse XML Document
49 saxBuilder.build(xmlDocumentStream);
50 //Output Validation Errors
51 if (handler.validationError == true){
52 logger.debug("XML Document has Error:"
53 + handler.validationError + " "
54 + handler.saxParseException.getMessage());
55 return false;}
56 else{
57 logger.debug("XML Document is valid");
58 return true;}
59
60 } catch (JDOMException jde) {
61 logger.debug(jde);
62 }
63
64 catch (IOException ioe) {
65 }
66 return false;
67
68 }
69
70 //Error Handler class
71 private class Validator extends DefaultHandler {
72 public boolean validationError = false;
73
74 public SAXParseException saxParseException = null;
75
76 public void error(SAXParseException exception) throws SAXException {
77 validationError = true;
78 saxParseException = exception;
79 }
80
81 public void fatalError(SAXParseException exception) throws SAXException {
82 validationError = true;
83 saxParseException = exception;
84 }
85
86 public void warning(SAXParseException exception) throws SAXException {
87 }
88 }
89
90
91
92 }