/*
* JBoss, a division of Red Hat
* Copyright 2009, Red Hat Middleware, LLC, and individual
* contributors as indicated by the @authors tag. See the
* copyright.txt in the distribution for a full listing of
* individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.gatein.wsrp.producer.config.impl.xml;
import org.gatein.wsrp.producer.config.ProducerConfiguration;
import org.gatein.wsrp.producer.config.impl.AbstractProducerConfigurationService;
import org.gatein.wsrp.producer.config.impl.ProducerConfigurationImpl;
import org.jboss.xb.binding.ObjectModelFactory;
import org.jboss.xb.binding.ObjectModelProvider;
import org.jboss.xb.binding.Unmarshaller;
import org.jboss.xb.binding.UnmarshallerFactory;
import org.jboss.xb.binding.XercesXsMarshaller;
import org.jboss.xb.binding.sunday.unmarshalling.DefaultSchemaResolver;
import org.xml.sax.SAXException;
import javax.xml.parsers.ParserConfigurationException;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringWriter;
import java.io.Writer;
import java.net.MalformedURLException;
import java.net.URL;
/**
* A simple configuration service that only supports manually edits to an external XML configuration file. Reloading and
* saving modifications are therefore not supported.
*
* @author <a href="mailto:chris.laprun@jboss.com">Chris Laprun</a>
* @version $Revision: 12276 $
* @since 2.6
*/
public class SimpleXMLProducerConfigurationService extends AbstractProducerConfigurationService
{
protected static final String PRODUCER_NAMESPACE = "http://www.gatein.org/xml/ns/gatein_wsrp_producer_1_0";
protected static final String PRODUCER_XSD = "gatein_wsrp_producer_1_0.xsd";
protected static DefaultSchemaResolver RESOLVER;
protected InputStream inputStream;
private static File tmp;
static
{
RESOLVER = new DefaultSchemaResolver();
RESOLVER.setCacheResolvedSchemas(true);
RESOLVER.addSchemaLocation("http://www.w3.org/XML/1998/namespace", "xsd/xml.xsd");
RESOLVER.addSchemaLocation(PRODUCER_NAMESPACE, "xsd/" + PRODUCER_XSD);
try
{
tmp = File.createTempFile("producer-configuration", "xml");
tmp.deleteOnExit();
}
catch (IOException e)
{
throw new RuntimeException(e);
}
}
public SimpleXMLProducerConfigurationService()
{
}
public SimpleXMLProducerConfigurationService(InputStream inputStream)
{
this.inputStream = inputStream;
}
public void setInputStream(InputStream inputStream)
{
this.inputStream = inputStream;
}
public void loadConfiguration() throws Exception
{
if (inputStream != null)
{
Unmarshaller unmarshaller = UnmarshallerFactory.newInstance().newUnmarshaller();
ObjectModelFactory factory = new ProducerConfigurationFactory();
configuration.set((ProducerConfiguration)unmarshaller.unmarshal(inputStream, factory, null));
}
configuration.compareAndSet(null, new ProducerConfigurationImpl());
}
public void saveConfiguration() throws Exception
{
saveConfigurationTo(tmp);
}
public URL getConfigurationURL()
{
try
{
return tmp.toURI().toURL();
}
catch (MalformedURLException e)
{
throw new RuntimeException(e);
}
}
protected void saveConfigurationTo(File config) throws IOException, SAXException, ParserConfigurationException
{
// get the output writer to write the XML content
StringWriter xmlOutput = new StringWriter();
// get the XML Schema source
InputStream is = Thread.currentThread().getContextClassLoader().getResourceAsStream("xsd/" + PRODUCER_XSD);
Reader xsReader = new InputStreamReader(is);
// create an instance of XML Schema marshaller
// MarshallerImpl marshaller = new MarshallerImpl(); // todo: replace XercesXsMarshaller by this
XercesXsMarshaller marshaller = new XercesXsMarshaller();
marshaller.setSchemaResolver(RESOLVER);
// we need to specify what elements are top most (roots) providing namespace URI, prefix and local name
marshaller.addRootElement(PRODUCER_NAMESPACE, "", "producer-configuration");
// declare default namespace
marshaller.declareNamespace("wpc", PRODUCER_NAMESPACE);
// add schema location by declaring xsi namespace and adding xsi:schemaLocation attribute
marshaller.declareNamespace("xsi", "http://www.w3.org/2001/XMLSchema-instance");
marshaller.addAttribute("xsi", "schemaLocation", "string",
PRODUCER_NAMESPACE + " http://www.jboss.org/portal/xsd/" + PRODUCER_XSD);
// create an instance of Object Model Provider
ObjectModelProvider provider = new ProducerConfigurationProvider();
marshaller.setProperty("org.jboss.xml.binding.marshalling.indent", "true");
marshaller.marshal(xsReader, provider, configuration, xmlOutput);
// close XML Schema reader
xsReader.close();
config.createNewFile();
Writer configFile = new BufferedWriter(new FileWriter(config));
configFile.write(xmlOutput.toString());
configFile.flush();
configFile.close();
}
}