/*
* Copyright 2014 the original author or authors.
*
* Licensed 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 specific language governing permissions and
* limitations under the License.
*/
package org.springframework.xd.dirt.integration.bus.converter;
import org.springframework.messaging.Message;
import org.springframework.util.MimeTypeUtils;
//import org.springframework.xd.tuple.Tuple;
/**
* A {@link org.springframework.messaging.converter.MessageConverter}
* to convert a {@link Tuple} to a JSON String
*
* @author David Turanski
*/
public class TupleToJsonMessageConverter extends AbstractFromMessageConverter {
public TupleToJsonMessageConverter() {
super(MimeTypeUtils.APPLICATION_JSON);
}
@Override
protected Class<?>[] supportedTargetTypes() {
return new Class<?>[] { String.class };
}
@Override
protected Class<?>[] supportedPayloadTypes() {
return new Class<?>[] { /*Tuple.class*/ };
}
@Override
public Object convertFromInternal(Message<?> message, Class<?> targetClass) {
// Tuple t = (Tuple) message.getPayload();
// String json = t.toString();
return buildConvertedMessage(/*json*/"{}", message.getHeaders(), MimeTypeUtils.APPLICATION_JSON);
}
}