/**
* Copyright (C) 2009 - present by OpenGamma Inc. and the OpenGamma group of companies
*
* Please see distribution for license.
*/
package com.opengamma.transport.jaxrs;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import javax.ws.rs.Consumes;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.Provider;
import org.fudgemsg.FudgeMsg;
import org.fudgemsg.FudgeMsgEnvelope;
import org.fudgemsg.mapping.FudgeDeserializer;
import org.fudgemsg.mapping.FudgeMessageBuilder;
import org.fudgemsg.wire.FudgeMsgReader;
import org.fudgemsg.wire.xml.FudgeXMLStreamReader;
import com.google.common.base.Charsets;
/**
* A JAX-RS provider to convert RESTful responses to Fudge XML encoded messages.
* <p>
* This converts directly to Fudge from the RESTful resource without the need to manually
* create the message in application code.
*/
@Provider
@Consumes(MediaType.APPLICATION_XML)
public class FudgeObjectXMLConsumer extends FudgeBase implements MessageBodyReader<Object> {
/**
* Creates the consumer.
*/
public FudgeObjectXMLConsumer() {
super();
}
//-------------------------------------------------------------------------
@Override
public boolean isReadable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
FudgeMessageBuilder<?> builder = getFudgeContext().getObjectDictionary().getMessageBuilder(type);
return type != String.class && // allow manually created JSON string to work
((builder != null && !builder.getClass().getCanonicalName().equals("org.fudgemsg.mapping.JavaBeanBuilder")) ||
type == FudgeMsgEnvelope.class);
}
@Override
public Object readFrom(
Class<Object> type,
Type genericType,
Annotation[] annotations,
MediaType mediaType,
MultivaluedMap<String, String> httpHeaders,
InputStream entityStream) throws IOException, WebApplicationException {
InputStreamReader entityReader = new InputStreamReader(entityStream, Charsets.UTF_8);
@SuppressWarnings("resource") // wraps stream that cannot be closed here
FudgeMsgReader reader = new FudgeMsgReader(new FudgeXMLStreamReader(getFudgeContext(), entityReader));
FudgeMsg message = reader.nextMessage();
if (message == null) {
return null;
}
FudgeDeserializer deser = new FudgeDeserializer(getFudgeContext());
return deser.fudgeMsgToObject(type, message);
}
}