org.objectledge.xml
Class XMLValidator

java.lang.Object
  org.objectledge.xml.XMLValidator

public class XMLValidator
extends Object

Validates XML files against schemata using MSV library.

The primary schema language used throughout ObjectLedge project is RelaxNG, but the MSV library determines the schema languague using XML namespace of the top level element. At the moment XML based schema languages supported by MSV and thus by XMLValidator are RelaxNG, W3C XSD, and others.

Version:

$Id: XMLValidator.java,v 1.10 2004/06/01 11:13:11 zwierzem Exp $

Author:

Rafal Krzewski, Damian Gajda

Field Summary

private ExceptionErrorHandler	errorHandler
private XMLGrammarCache	grammarCache
static String	RELAXNG_SCHEMA Pathname of the relaxng schema.
private SAXParser	saxParser

Constructor Summary

XMLValidator(XMLGrammarCache grammarCache)
Creates a new instance of the validator.

Method Summary

com.sun.msv.verifier.Verifier	getVerifier(URL schemaUrl) Returns a thread-exclusive verifier instance.
void	validate(URL fileUrl, URL schemaUrl) Validates given XML file using specified schema.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

grammarCache

private XMLGrammarCache grammarCache

saxParser

private SAXParser saxParser

errorHandler

private ExceptionErrorHandler errorHandler

RELAXNG_SCHEMA

public static final String RELAXNG_SCHEMA

Pathname of the relaxng schema.

See Also:

Constant Field Values

Constructor Detail

XMLValidator

public XMLValidator(XMLGrammarCache grammarCache)
             throws ParserConfigurationException,
                    SAXException

Creates a new instance of the validator.

Parameters:

grammarCache - system grammar cache for retrieving grammars used for validation

Throws:

ParserConfigurationException - if the JAXP parser factory is misconfigured.

SAXException - if the JAXP parser factory is misconfigured.

Method Detail

validate

public void validate(URL fileUrl,
                     URL schemaUrl)
              throws SAXException,
                     ParserConfigurationException,
                     IOException

Validates given XML file using specified schema.

Parameters:

fileUrl - the URL of the file to be validated.

schemaUrl - the URL of the schema to be used.

Throws:

ParserConfigurationException - if parser is badly configured.

IOException - if the schema does not exist.

SAXException - if the schema is malformed.

getVerifier

public com.sun.msv.verifier.Verifier getVerifier(URL schemaUrl)
                                          throws SAXException,
                                                 ParserConfigurationException,
                                                 IOException

Returns a thread-exclusive verifier instance.

Parameters:

schemaUrl - the URL of the schema to be used.

Returns:

a thread-exclusive verifier instance.

Throws:

ParserConfigurationException - if parser is badly configured.

IOException - if the schema does not exist.

SAXException - if the schema is malformed.