/* Woodstox XML processor
*
* Copyright (c) 2004- Tatu Saloranta, tatu.saloranta@iki.fi
*
* Licensed under the License specified in the file LICENSE which is
* included with the source code.
* You may not use this file except in compliance with the License.
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.ctc.wstx.msv;
import javax.xml.parsers.SAXParserFactory;
import javax.xml.stream.*;
import org.xml.sax.InputSource;
import org.codehaus.stax2.validation.*;
import com.sun.msv.grammar.xmlschema.XMLSchemaGrammar;
import com.sun.msv.reader.GrammarReaderController;
import com.sun.msv.reader.xmlschema.XMLSchemaReader;
/**
* This is a StAX2 schema factory that can parse and create schema instances
* for creating validators that validate documents to check their validity
* against specific W3C Schema instances. It requires
* Sun Multi-Schema Validator
* (http://www.sun.com/software/xml/developers/multischema/)
* to work, and acts as a quite thin wrapper layer, similar to
* how matching RelaxNG validator works
*/
public class W3CSchemaFactory
extends BaseSchemaFactory
{
/**
* For now, there's no need for fine-grained error/problem reporting
* infrastructure, so let's just use a dummy controller.
*/
protected final GrammarReaderController mDummyController =
new com.sun.msv.reader.util.IgnoreController();
public W3CSchemaFactory()
{
super(XMLValidationSchema.SCHEMA_ID_RELAXNG);
}
/*
///////////////////////////////////////////////////////////////////////
// Non-public methods
///////////////////////////////////////////////////////////////////////
*/
protected XMLValidationSchema loadSchema(InputSource src, Object sysRef)
throws XMLStreamException
{
/* 26-Oct-2007, TSa: Are SAX parser factories safe to share?
* If not, should just create new instances for each
* parsed schema.
*/
SAXParserFactory saxFactory = getSaxFactory();
MyGrammarController ctrl = new MyGrammarController();
XMLSchemaGrammar grammar = XMLSchemaReader.parse(src, saxFactory, ctrl);
if (grammar == null) {
String msg = "Failed to load W3C Schema from '"+sysRef+"'";
String emsg = ctrl.mErrorMsg;
if (emsg != null) {
msg = msg + ": "+emsg;
}
throw new XMLStreamException(msg);
}
return new W3CSchema(grammar);
}
}