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* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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
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package org.apache.wink.providers.jettison;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.lang.annotation.Annotation;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.nio.charset.Charset;
import java.util.HashMap;
import javax.ws.rs.Consumes;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Application;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.Response;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.XMLStreamWriter;
import javax.xml.transform.stream.StreamSource;
import org.apache.wink.common.internal.i18n.Messages;
import org.apache.wink.common.internal.providers.entity.xml.AbstractJAXBProvider;
import org.apache.wink.common.internal.utils.MediaTypeUtils;
import org.apache.wink.common.utils.ProviderUtils;
import org.codehaus.jettison.badgerfish.BadgerFishXMLInputFactory;
import org.codehaus.jettison.badgerfish.BadgerFishXMLStreamWriter;
import org.codehaus.jettison.mapped.Configuration;
import org.codehaus.jettison.mapped.MappedXMLInputFactory;
import org.codehaus.jettison.mapped.MappedXMLOutputFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* A Jettison JAXBElement provider. By default, use the BadgerFishConvention.
* Namespace mapping needs to be set if namespaces are used. In Application
* sub-class, use {@link Application#getSingletons()} to add to application.
*/
@Provider
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
public class JettisonJAXBElementProvider extends AbstractJAXBProvider implements
MessageBodyReader<JAXBElement<?>>, MessageBodyWriter<JAXBElement<?>> {
private static final Logger logger = LoggerFactory.getLogger(JettisonJAXBElementProvider.class);
final private boolean isBadgerFishConventionUsed;
final private Configuration inputConfiguration;
final private Configuration outputConfiguration;
private boolean isReadable;
private boolean isWritable;
public JettisonJAXBElementProvider() {
this(true, null, null);
}
public JettisonJAXBElementProvider(boolean isBadgerFishConventionUsed,
Configuration reader,
Configuration writer) {
this.isBadgerFishConventionUsed = isBadgerFishConventionUsed;
if (reader != null) {
this.inputConfiguration = reader;
} else {
this.inputConfiguration = new Configuration(new HashMap<String, String>());
}
if (writer != null) {
this.outputConfiguration = writer;
} else {
this.outputConfiguration = new Configuration(new HashMap<String, String>());
}
// see http://jira.codehaus.org/browse/JETTISON-74 . reading disabled
// for now
isReadable = false;
isWritable = true;
}
public void setUseAsReader(boolean isReadable) {
this.isReadable = isReadable;
}
public void setUseAsWriter(boolean isWritable) {
this.isWritable = isWritable;
}
public boolean isReadable(Class<?> type,
Type genericType,
Annotation[] annotations,
MediaType mediaType) {
return isReadable && isJAXBElement(type, genericType);
}
public JAXBElement<?> readFrom(Class<JAXBElement<?>> type,
Type genericType,
Annotation[] annotations,
MediaType mediaType,
MultivaluedMap<String, String> httpHeaders,
InputStream entityStream) throws IOException,
WebApplicationException {
ParameterizedType parameterizedType = (ParameterizedType)genericType;
Class<?> classToFill = (Class<?>)parameterizedType.getActualTypeArguments()[0];
JAXBElement<?> unmarshaledResource = null;
Unmarshaller unmarshaller = null;
try {
JAXBContext context = getContext(classToFill, mediaType);
unmarshaller = getJAXBUnmarshaller(type, context, mediaType);
XMLStreamReader xsr = null;
if (isBadgerFishConventionUsed) {
xsr = new BadgerFishXMLInputFactory().createXMLStreamReader(entityStream);
} else {
xsr =
new MappedXMLInputFactory(inputConfiguration)
.createXMLStreamReader(new StreamSource(entityStream));
}
unmarshaledResource = unmarshaller.unmarshal(xsr, classToFill);
} catch (JAXBException e) {
if (logger.isErrorEnabled()) {
logger.error(Messages.getMessage("jaxbFailToUnmarshal", type.getName())); //$NON-NLS-1$
}
throw new WebApplicationException(e, Response.Status.BAD_REQUEST);
} catch (XMLStreamException e) {
if (logger.isErrorEnabled()) {
logger.error(Messages.getMessage("jaxbFailToUnmarshal", type.getName())); //$NON-NLS-1$
}
throw new WebApplicationException(e, Response.Status.BAD_REQUEST);
}
return unmarshaledResource;
}
public long getSize(JAXBElement<?> t,
Class<?> type,
Type genericType,
Annotation[] annotations,
MediaType mediaType) {
return -1;
}
public boolean isWriteable(Class<?> type,
Type genericType,
Annotation[] annotations,
MediaType mediaType) {
return isWritable && isJAXBElement(type, genericType);
}
public void writeTo(JAXBElement<?> t,
Class<?> type,
Type genericType,
Annotation[] annotations,
MediaType mediaType,
MultivaluedMap<String, Object> httpHeaders,
OutputStream entityStream) throws IOException, WebApplicationException {
try {
mediaType = MediaTypeUtils.setDefaultCharsetOnMediaTypeHeader(httpHeaders, mediaType);
Class<?> declaredType = t.getDeclaredType();
JAXBContext context = getContext(declaredType, mediaType);
Marshaller marshaller = getJAXBMarshaller(declaredType, context, mediaType);
Charset charset = Charset.forName(ProviderUtils.getCharset(mediaType));
OutputStreamWriter writer = new OutputStreamWriter(entityStream, charset);
XMLStreamWriter xsw = null;
if (isBadgerFishConventionUsed) {
xsw = new BadgerFishXMLStreamWriter(writer);
} else {
try {
xsw =
new MappedXMLOutputFactory(outputConfiguration)
.createXMLStreamWriter(writer);
} catch (XMLStreamException e) {
if (logger.isErrorEnabled()) {
logger.error(Messages.getMessage("jaxbFailToMarshal", t.getName())); //$NON-NLS-1$
}
throw new WebApplicationException(e, Response.Status.INTERNAL_SERVER_ERROR);
}
}
marshaller.marshal(t, xsw);
writer.flush();
} catch (JAXBException e) {
if (logger.isErrorEnabled()) {
logger.error(Messages.getMessage("jaxbFailToMarshal", t.getName())); //$NON-NLS-1$
}
throw new WebApplicationException(e, Response.Status.INTERNAL_SERVER_ERROR);
}
}
}