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package com.sun.xml.bind.validator;
import javax.xml.bind.JAXBException;
import javax.xml.bind.ValidationEvent;
import org.iso_relax.verifier.impl.ForkContentHandler;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.AttributesImpl;
import com.sun.msv.grammar.Grammar;
import com.sun.msv.verifier.Verifier;
import com.sun.msv.verifier.VerifierFilter;
import com.sun.msv.verifier.regexp.REDocumentDeclaration;
import com.sun.xml.bind.ErrorHandlerToEventHandler;
import com.sun.xml.bind.unmarshaller.SAXUnmarshallerHandler;
/**
* Filter implementation of SAXUnmarshallerHandler.
*
* <p>
* This component internally uses a VerifierFilter to validate
* SAX events that goes through this component.
* Discovered error information is just passed down to the next component.
*
* <p>
* This will enable the implementation to validate all sources of SAX events
* in the RI - XMLReader, DOMScanner
*
* SAX events will go the VerifierFilter and then to the SAXUnmarshaller...
*
* @since JAXB1.0
* @deprecated in JAXB1.0.1
*/
public class ValidatingUnmarshaller extends ForkContentHandler
implements SAXUnmarshallerHandler {
/**
* Creates a new instance of ValidatingUnmarshaller.
*/
public static ValidatingUnmarshaller create( Grammar grammar,
SAXUnmarshallerHandler _core,
Locator locator ) {
// create a VerifierFilter and configure it
// so that error messages will be sent to the core,
Verifier v = new Verifier(
new REDocumentDeclaration(grammar),
new ErrorHandlerToEventHandler(_core,locator) );
v.setPanicMode( true );
return new ValidatingUnmarshaller(
new VerifierFilter( v ), _core );
}
private ValidatingUnmarshaller( VerifierFilter filter,
SAXUnmarshallerHandler _core ) {
super( filter, _core );
this.core = _core;
}
// delegate to the next component
public Object getResult() throws JAXBException, IllegalStateException {
return core.getResult();
}
public boolean handleEvent(ValidationEvent event) {
// SAXUnmarshallerHandler already checks for RuntimeExceptions, so
// there is no need to wrap this call in a try/catch
return core.handleEvent(event);
}
private final SAXUnmarshallerHandler core;
private final AttributesImpl xsiLessAtts = new AttributesImpl();
public void startElement( String nsUri, String local, String qname, Attributes atts ) throws SAXException {
// create an attributes set for MSV that doesn't contains xsi:schemaLocation
xsiLessAtts.clear();
int len = atts.getLength();
for( int i=0; i<len; i++ ) {
String aUri = atts.getURI(i);
String aLocal = atts.getLocalName(i);
if(aUri.equals("http://www.w3.org/2001/XMLSchema-instance")
&& (aLocal.equals("schemaLocation") ||
aLocal.equals("noNamespaceSchemaLocation") ||
aLocal.equals("type")))
continue;
// we do handle xsi:nil.
xsiLessAtts.addAttribute( aUri, aLocal,
atts.getQName(i), atts.getType(i), atts.getValue(i) );
}
super.startElement(nsUri,local,qname,xsiLessAtts);
}
}