/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file 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 specific language governing permissions and
* limitations under the License.
*/
package org.apache.servicemix.camel;
import java.io.StringReader;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.Map;
import java.util.Set;
import javax.activation.DataHandler;
import javax.jbi.messaging.MessageExchange;
import javax.jbi.messaging.MessageExchangeFactory;
import javax.jbi.messaging.MessagingException;
import javax.jbi.messaging.NormalizedMessage;
import javax.xml.namespace.QName;
import javax.xml.transform.Source;
import javax.xml.transform.stream.StreamSource;
import org.apache.camel.Exchange;
import org.apache.camel.ExchangePattern;
import org.apache.camel.Message;
import org.apache.camel.util.ExchangeHelper;
/**
* The binding of how Camel messages get mapped to JBI and back again
*
* @version $Revision: 563665 $
*/
public class JbiBinding {
private String messageExchangePattern;
/**
* Extracts the body from the given normalized message
*/
public Object extractBodyFromJbi(JbiExchange exchange, NormalizedMessage normalizedMessage) {
// TODO we may wish to turn this into a POJO such as a JAXB/DOM
return normalizedMessage.getContent();
}
public Source convertBodyToJbi(Exchange exchange, Object body) {
return ExchangeHelper.convertToType(exchange, Source.class, body);
}
public MessageExchange makeJbiMessageExchange(Exchange camelExchange,
MessageExchangeFactory exchangeFactory,
String defaultMep)
throws MessagingException, URISyntaxException {
MessageExchange jbiExchange = createJbiMessageExchange(camelExchange, exchangeFactory, defaultMep);
NormalizedMessage normalizedMessage = jbiExchange.getMessage("in");
if (normalizedMessage == null) {
normalizedMessage = jbiExchange.createMessage();
jbiExchange.setMessage(normalizedMessage, "in");
}
normalizedMessage.setContent(getJbiInContent(camelExchange));
addJbiHeaders(jbiExchange, normalizedMessage, camelExchange);
addJbiAttachments(jbiExchange, normalizedMessage, camelExchange);
return jbiExchange;
}
// Properties
//-------------------------------------------------------------------------
public String getMessageExchangePattern() {
return messageExchangePattern;
}
/**
* Sets the message exchange pattern to use for communicating with JBI
*
* @param messageExchangePattern
*/
public void setMessageExchangePattern(String messageExchangePattern) {
this.messageExchangePattern = messageExchangePattern;
}
protected MessageExchange createJbiMessageExchange(Exchange camelExchange,
MessageExchangeFactory exchangeFactory,
String defaultMep)
throws MessagingException, URISyntaxException {
// option 1 -- use the MEP that was configured on the endpoint URI
ExchangePattern mep = ExchangePattern.fromWsdlUri(defaultMep);
if (mep == null) {
// option 2 -- use the MEP configured on the ToJbiProcessor
mep = ExchangePattern.fromWsdlUri(getMessageExchangePattern());
}
if (mep == null) {
// option 3 -- use the MEP from the Camel Exchange
mep = camelExchange.getPattern();
}
MessageExchange answer = null;
if (mep != null) {
if (mep == ExchangePattern.InOnly) {
answer = exchangeFactory.createInOnlyExchange();
} else if (mep == ExchangePattern.InOptionalOut) {
answer = exchangeFactory.createInOptionalOutExchange();
} else if (mep == ExchangePattern.InOut) {
answer = exchangeFactory.createInOutExchange();
} else if (mep == ExchangePattern.RobustInOnly) {
answer = exchangeFactory.createRobustInOnlyExchange();
} else {
answer = exchangeFactory.createExchange(new URI(mep.toString()));
}
}
// TODO: this is not really usefull as the out will not be
// TODO: populated at that time
if (answer == null) {
// lets try choose the best MEP based on the camel message
Message out = camelExchange.getOut(false);
if (out == null || out.getBody() == null) {
answer = exchangeFactory.createInOnlyExchange();
} else {
answer = exchangeFactory.createInOutExchange();
}
}
if (camelExchange.getProperty("jbi.operation") != null) {
String operationName = (String) camelExchange.getProperty("jbi.operation");
QName operationQName = QName.valueOf(operationName);
answer.setOperation(operationQName);
}
return answer;
}
protected Source getJbiInContent(Exchange camelExchange) {
// TODO this should be more smart
Object value = camelExchange.getIn().getBody();
if (value instanceof String) {
return new StreamSource(new StringReader(value.toString()));
}
return camelExchange.getIn().getBody(Source.class);
}
protected void addJbiHeaders(MessageExchange jbiExchange, NormalizedMessage normalizedMessage, Exchange camelExchange) {
Set<Map.Entry<String, Object>> entries = camelExchange.getIn().getHeaders().entrySet();
for (Map.Entry<String, Object> entry : entries) {
normalizedMessage.setProperty(entry.getKey(), entry.getValue());
}
}
protected void addJbiAttachments(MessageExchange jbiExchange, NormalizedMessage normalizedMessage,
Exchange camelExchange)
throws MessagingException {
Set<Map.Entry<String, DataHandler>> entries = camelExchange.getIn().getAttachments().entrySet();
for (Map.Entry<String, DataHandler> entry : entries) {
normalizedMessage.addAttachment(entry.getKey(), entry.getValue());
}
}
}