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