/*
* $Id$
*
* License Agreement.
*
* Rich Faces - Natural Ajax for Java Server Faces (JSF)
*
* Copyright (C) 2007 Exadel, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation.
*
* This library 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 library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.richfaces.cdk.xmlconfig;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.io.Writer;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.Collection;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import javax.xml.bind.UnmarshallerHandler;
import javax.xml.bind.util.ValidationEventCollector;
import javax.xml.transform.Result;
import javax.xml.transform.Source;
import javax.xml.transform.sax.SAXSource;
import javax.xml.transform.stream.StreamResult;
import org.apache.cocoon.pipeline.component.sax.XIncludeTransformer;
import org.richfaces.cdk.CdkException;
import org.richfaces.cdk.Logger;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.ext.EntityResolver2;
import org.xml.sax.helpers.XMLReaderFactory;
import com.google.inject.Inject;
/**
* <p class="changed_added_4_0">
* </p>
*
* @author asmirnov@exadel.com
*
*/
public class JAXBBinding implements JAXB {
private static final FacesConfigNamespacePreffixMapper PREFFIX_MAPPER = new FacesConfigNamespacePreffixMapper();
@Inject
private EntityResolver2 resolver;
@Inject
private Logger log;
public JAXBBinding() {
}
/*
* (non-Javadoc)
*
* @see org.richfaces.cdk.xmlconfig.JAXB#unmarshal(java.io.File, java.lang.String, java.lang.Class)
*/
@Override
public <T> T unmarshal(File file, String schemaLocation, Class<T> bindClass) throws CdkException, FileNotFoundException {
InputSource input = new InputSource(new FileInputStream(file));
input.setSystemId(file.toURI().toString());
T unmarshal = unmarshal(schemaLocation, bindClass, input);
return unmarshal;
}
/*
* (non-Javadoc)
*
* @see org.richfaces.cdk.xmlconfig.JAXB#unmarshal(java.lang.String, java.lang.String, java.lang.Class)
*/
@Override
public <T> T unmarshal(String url, String schemaLocation, Class<T> bindClass) throws CdkException, FileNotFoundException {
try {
InputSource inputSource;
try {
inputSource = resolver.resolveEntity(null, url);
} catch (SAXException e) {
inputSource = null;
}
if (null == inputSource) {
inputSource = new InputSource(url);
}
T unmarshal = unmarshal(schemaLocation, bindClass, inputSource);
return unmarshal;
} catch (IOException e) {
throw new FileNotFoundException("XML file not found at " + url);
}
}
@SuppressWarnings("unchecked")
// TODO nick - schemaLocation is unused
<T> T unmarshal(String schemaLocation, Class<T> bindClass, InputSource inputSource) throws CdkException {
T unmarshal = null;
try {
XMLReader xmlReader = XMLReaderFactory.createXMLReader();
xmlReader.setEntityResolver(resolver);
xmlReader.setFeature("http://xml.org/sax/features/validation", true);
xmlReader.setFeature("http://apache.org/xml/features/validation/schema", true);
xmlReader.setFeature("http://apache.org/xml/features/validation/dynamic", true);
// Setup JAXB to unmarshal
// TODO - create xinclude content handler that process xinclude directives
// and send SAX event to the unmarshaller handler.
Unmarshaller u = JAXBContext.newInstance(bindClass).createUnmarshaller();
u.setEventHandler(new ValidationEventCollector());
XIncludeTransformer xIncludeTransformer = new XIncludeTransformer(log);
if (null != inputSource.getSystemId()) {
xIncludeTransformer.setBaseUri(new URI(inputSource.getSystemId()));
}
UnmarshallerHandler unmarshallerHandler = u.getUnmarshallerHandler();
xIncludeTransformer.setContentHandler(unmarshallerHandler);
xIncludeTransformer.setResolver(resolver);
xmlReader.setContentHandler(xIncludeTransformer);
xmlReader.setProperty("http://xml.org/sax/properties/lexical-handler", xIncludeTransformer);
xmlReader.parse(inputSource);
// turn off the JAXB provider's default validation mechanism to
// avoid duplicate validation
// u.setValidating(false);
unmarshal = (T) unmarshallerHandler.getResult();
} catch (JAXBException e) {
throw new CdkException("JAXB Unmarshaller error: " + e.getMessage(), e);
} catch (URISyntaxException e) {
throw new CdkException("Invalid XML source URI: " + e.getMessage(), e);
} catch (IOException e) {
throw new CdkException("JAXB Unmarshaller input error: " + e.getMessage(), e);
} catch (SAXException e) {
throw new CdkException("XML error: " + e.getMessage(), e);
} finally {
// TODO Refactoring
}
return unmarshal;
}
/*
* (non-Javadoc)
*
* @see org.richfaces.cdk.xmlconfig.JAXB#marshal(java.io.File, java.lang.String, T)
*/
@Override
public <T> void marshal(Writer output, String schemaLocation, T model) throws CdkException {
try {
StreamResult result = new StreamResult(output);
marshal(result, schemaLocation, model);
output.flush();
output.close();
} catch (FileNotFoundException e) {
throw new CdkException("File not found", e);
} catch (IOException e) {
throw new CdkException("XML file writting error", e);
}
}
/*
* (non-Javadoc)
*
* @see org.richfaces.cdk.xmlconfig.JAXB#marshal(javax.xml.transform.Result, java.lang.String, T)
*/
@Override
public <T> void marshal(Result output, String schemaLocation, T model) throws CdkException {
try {
JAXBContext jc = JAXBContext.newInstance(model.getClass());
Marshaller marshaller = jc.createMarshaller();
marshaller.setProperty("jaxb.formatted.output", Boolean.TRUE);
// TODO - let writer to define additional schemes.
// marshaller.setProperty("jaxb.schemaLocation", Boolean.TRUE);
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
if (null != schemaLocation) {
marshaller.setProperty(Marshaller.JAXB_SCHEMA_LOCATION, schemaLocation);
marshaller.setProperty("com.sun.xml.bind.namespacePrefixMapper", PREFFIX_MAPPER);
}
marshaller.marshal(model, output);
} catch (JAXBException e) {
throw new CdkException("JAXB Marshaller error", e);
} finally {
// TODO Refactoring
}
}
/**
* <p class="changed_added_4_0">
* Close input source after parsing.
* </p>
*
* @param source
*/
private void closeSource(Source source) {
if (source instanceof SAXSource) {
SAXSource saxSource = (SAXSource) source;
InputSource inputSource = saxSource.getInputSource();
try {
Reader stream = inputSource.getCharacterStream();
if (null != stream) {
stream.close();
} else {
InputStream byteStream = inputSource.getByteStream();
if (null != byteStream) {
byteStream.close();
}
}
} catch (IOException e) {
// Can be ignored because source has already been read.
}
}
}
public static boolean isCollections(Class<?> targetType, Object propertyValue) {
return Collection.class.isAssignableFrom(targetType) && propertyValue instanceof Collection;
}
}