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/**
* PlasmaSDO™ License
*
* This is a community release of PlasmaSDO™, a dual-license
* Service Data Object (SDO) 2.1 implementation.
* This particular copy of the software is released under the
* version 2 of the GNU General Public License. PlasmaSDO™ was developed by
* TerraMeta Software, Inc.
*
* Copyright (c) 2013, TerraMeta Software, Inc. All rights reserved.
*
* General License information can be found below.
*
* This distribution may include materials developed by third
* parties. For license and attribution notices for these
* materials, please refer to the documentation that accompanies
* this distribution (see the "Licenses for Third-Party Components"
* appendix) or view the online documentation at
* .
*
*/
package org.plasma.common.bind;
import java.io.InputStream;
import java.io.Reader;
import java.io.StringReader;
import java.net.URL;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.UnmarshalException;
import javax.xml.bind.Unmarshaller;
import javax.xml.transform.Source;
import javax.xml.transform.stream.StreamSource;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import javax.xml.validation.Validator;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.w3c.dom.ls.LSResourceResolver;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import org.xml.sax.helpers.DefaultHandler;
public class ValidatingUnmarshaler extends DataBindingSupport {
private static Log log = LogFactory.getLog(ValidatingUnmarshaler.class);
private Unmarshaller unmarshaler;
private Resolver resolver;
private Handler handler;
private ValidatingUnmarshaler() {
super(null);
}
public ValidatingUnmarshaler(URL url, JAXBContext context,
BindingValidationEventHandler validationEventHandler) throws JAXBException,
SAXException {
super(context);
if (url == null)
throw new IllegalArgumentException("non-null argument expected, url");
this.unmarshaler = createUnmarshaler(url, context);
this.unmarshaler.setEventHandler(validationEventHandler);
}
public ValidatingUnmarshaler(InputStream stream, JAXBContext context,
BindingValidationEventHandler validationEventHandler) throws JAXBException,
SAXException {
super(context);
if (stream == null)
throw new IllegalArgumentException("non-null argument expected, stream");
// this.resolver = new Resolver();
// this.handler = new Handler();
this.unmarshaler = createUnmarshaler(
new InputStream[] { stream },
context, this.handler, this.resolver);
this.unmarshaler.setEventHandler(validationEventHandler);
}
public ValidatingUnmarshaler(InputStream[] streams, JAXBContext context,
BindingValidationEventHandler validationEventHandler) throws JAXBException,
SAXException {
super(context);
if (streams == null)
throw new IllegalArgumentException("non-null argument expected, streams");
this.resolver = new Resolver();
this.handler = new Handler();
this.unmarshaler = createUnmarshaler(
streams,
context,
this.handler, this.resolver);
this.unmarshaler.setEventHandler(validationEventHandler);
}
public ValidatingUnmarshaler(URL url, JAXBContext context, Handler handler, Resolver resolver)
throws JAXBException, SAXException {
super(context);
if (url == null)
throw new IllegalArgumentException("non-null argument expected, url");
this.resolver = resolver;
this.handler = handler;
this.unmarshaler = createUnmarshaler(url, context, this.handler, this.resolver);
}
public ValidatingUnmarshaler(InputStream stream, JAXBContext context, Handler handler,
Resolver resolver) throws JAXBException, SAXException {
super(context);
if (stream == null)
throw new IllegalArgumentException("non-null argument expected, stream");
this.resolver = resolver;
this.handler = handler;
this.unmarshaler = createUnmarshaler(
new InputStream[] { stream },
context, this.handler, this.resolver);
}
/**
* Creates an unmarshaler using the given factories and URL. Loads only the
* given (subclass) schema as this is the "root" schema and it should
* include any other schema resources it needs, and so on. Note all included
* schemas MUST be found at the same class level as the root schema.
*
* @param url
* the Schema URL
* @param context
* the SAXB context
* @param handler
* the SAX handler
* @param resolver
* the SAX resolver
* @return the unmarshaler
* @throws JAXBException
* @throws SAXException
*/
private Unmarshaller createUnmarshaler(URL url, JAXBContext context, Handler handler,
Resolver resolver) throws JAXBException, SAXException {
Unmarshaller u = context.createUnmarshaller();
// adds a custom object factory
// u.setProperty("com.sun.xml.bind.ObjectFactory",new
// ObjectFactoryEx());
SchemaFactory schemaFactory = SchemaFactory.newInstance("http://www.w3.org/2001/XMLSchema");
Schema schemaGrammar = schemaFactory.newSchema(url);
u.setSchema(schemaGrammar);
Validator schemaValidator = schemaGrammar.newValidator();
schemaValidator.setResourceResolver(resolver);
schemaValidator.setErrorHandler(handler);
return u;
}
private Unmarshaller createUnmarshaler(URL url, JAXBContext context) throws JAXBException,
SAXException {
Unmarshaller u = context.createUnmarshaller();
// adds a custom object factory
// u.setProperty("com.sun.xml.bind.ObjectFactory",new
// ObjectFactoryEx());
SchemaFactory schemaFactory = SchemaFactory.newInstance("http://www.w3.org/2001/XMLSchema");
Schema schemaGrammar = schemaFactory.newSchema(url);
u.setSchema(schemaGrammar);
return u;
}
/**
* Creates an unmarshaler using the given factories and sream. Loads only
* the given (subclass) schema as this is the "root" schema and it should
* include any other schema resources it needs, and so on. Note all included
* schemas MUST be found at the same class level as the root schema.
*
* @param stream
* the Schema stream
* @param context
* the SAXB context
* @param handler
* the SAX handler
* @param resolver
* the SAX resolver
* @return the unmarshaler
* @throws JAXBException
* @throws SAXException
*/
private Unmarshaller createUnmarshaler(InputStream[] streams, JAXBContext context,
Handler handler, Resolver resolver) throws JAXBException, SAXException {
Unmarshaller u = context.createUnmarshaller();
SchemaFactory schemaFactory = SchemaFactory.newInstance("http://www.w3.org/2001/XMLSchema");
StreamSource[] sources = new StreamSource[streams.length];
for (int i = 0; i < streams.length; i++) {
sources[i] = new StreamSource(streams[i]);
//FIXME: will not resolve relative URI's (included schemas) without this
//sources[i].setSystemId(systemId)
}
Schema schemaGrammar = schemaFactory.newSchema(sources);
u.setSchema(schemaGrammar);
Validator schemaValidator = schemaGrammar.newValidator();
schemaValidator.setResourceResolver(resolver);
schemaValidator.setErrorHandler(handler);
return u;
}
public Object validate(String xml) throws JAXBException, UnmarshalException {
return unmarshaler.unmarshal(new StringReader(xml));
}
public Object validate(InputStream xml) throws JAXBException, UnmarshalException {
return unmarshaler.unmarshal(xml);
}
public Object validate(Reader reader) throws JAXBException, UnmarshalException {
return unmarshaler.unmarshal(reader);
}
public Object validate(Source source) throws JAXBException, UnmarshalException {
return unmarshaler.unmarshal(source);
}
public BindingValidationEventHandler getValidationEventHandler() throws JAXBException {
return (BindingValidationEventHandler) this.unmarshaler.getEventHandler();
}
protected static class Handler extends DefaultHandler {
public void error(SAXParseException sAXParseException) throws SAXException {
log.error(sAXParseException.getMessage(), sAXParseException);
}
public void fatalError(SAXParseException sAXParseException) throws SAXException {
log.error(sAXParseException.getMessage(), sAXParseException);
}
public void warning(org.xml.sax.SAXParseException sAXParseException)
throws org.xml.sax.SAXException {
log.warn(sAXParseException.getMessage(), sAXParseException);
}
}
protected static class Resolver implements LSResourceResolver {
public org.w3c.dom.ls.LSInput resolveResource(String str, String str1, String str2,
String str3, String str4) {
log.info("Resolving : " + str + ":" + str1 + ":" + str2 + ":" + str3 + ":" + str4);
return null;
}
}
}
