/*
* @(#)$Id: SAXParserImpl.java 1566 2003-06-09 20:37:49Z kk122374 $
*
* Copyright 2001 Sun Microsystems, Inc. All Rights Reserved.
*
* This software is the proprietary information of Sun Microsystems, Inc.
* Use is subject to license terms.
*
*/
package com.sun.msv.verifier.jaxp;
import java.io.File;
import java.io.InputStream;
import javax.xml.parsers.SAXParser;
import org.iso_relax.verifier.Schema;
import org.iso_relax.verifier.Verifier;
import org.iso_relax.verifier.VerifierFactory;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXNotRecognizedException;
import org.xml.sax.SAXNotSupportedException;
import org.xml.sax.XMLFilter;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.XMLReaderAdapter;
/**
* SAXParser implementation that supports validation.
*
* <p>
* This class uses another SAXParser implementation and
* adds the validation capability to it.
*
* @author <a href="mailto:kohsuke.kawaguchi@sun.com">Kohsuke KAWAGUCHI</a>
*/
class SAXParserImpl extends SAXParser
{
/** The underlying SAX parser. */
private final SAXParser core;
/**
* JARV verifier object that performs the validation for this SAXParserImpl.
* This field is null when no schema is set.
*/
private Verifier verifier;
/** A reference to VerifierFactory that can be used to parse a schema. */
private final VerifierFactory factory;
SAXParserImpl( SAXParser core, VerifierFactory _jarvFactory, Verifier _verifier ) {
this.core = core;
this.factory = _jarvFactory;
this.verifier = _verifier;
}
/** @deprecated */
public org.xml.sax.Parser getParser() throws SAXException {
// maybe we should throw an UnsupportedOperationException,
// rather than doing a trick like this.
return new XMLReaderAdapter(getXMLReader());
}
public Object getProperty( String name )
throws SAXNotRecognizedException, SAXNotSupportedException {
return core.getProperty(name);
}
public void setProperty( String name, Object value )
throws SAXNotRecognizedException, SAXNotSupportedException {
if( Const.SCHEMA_PROPNAME.equals(name) ) {
try {
if(value instanceof String) {
verifier = factory.newVerifier( (String)value );
return;
}
if(value instanceof File) {
verifier = factory.newVerifier( (File)value );
return;
}
if(value instanceof InputSource) {
verifier = factory.newVerifier( (InputSource)value );
return;
}
if(value instanceof InputStream) {
verifier = factory.newVerifier( (InputStream)value );
return;
}
if(value instanceof Schema) {
verifier = ((Schema)value).newVerifier();
return;
}
throw new SAXNotSupportedException("unrecognized value type: "+value.getClass().getName() );
} catch( Exception e ) {
// TODO: what is the correct exception type?
throw new SAXNotRecognizedException(e.toString());
}
}
core.setProperty(name,value);
}
public XMLReader getXMLReader() throws SAXException {
XMLReader reader = core.getXMLReader();
if(verifier==null) return reader; // no validation is necessary.
XMLFilter filter = verifier.getVerifierFilter();
filter.setParent(reader);
return filter;
}
public boolean isNamespaceAware() {
return core.isNamespaceAware();
}
public boolean isValidating() {
return core.isValidating();
}
}