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package org.apache.tuscany.binding.jms;
import java.lang.reflect.InvocationTargetException;
import java.util.Properties;
import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import org.apache.tuscany.spi.wire.InvocationRuntimeException;
import org.apache.tuscany.spi.wire.Message;
import org.apache.tuscany.spi.wire.TargetInvoker;
/**
* Invoke a JMS reference.
*
* @version $Rev$ $Date$
*/
public class JMSTargetInvoker implements TargetInvoker {
private JMSBinding jmsBinding;
private Context context;
private String operationName;
private JMSResourceFactory jmsResourceFactory;
private OperationSelector operationSelector;
public JMSTargetInvoker(JMSResourceFactory jmsResourceFactory,JMSBinding jmsBinding, String operationName, OperationSelector operationSelector) throws NamingException {
this.jmsBinding = jmsBinding;
this.jmsResourceFactory = jmsResourceFactory;
this.operationName = operationName;
this.operationSelector = operationSelector;
}
public Message invoke(Message msg) throws InvocationRuntimeException {
try {
Object resp = invokeTarget(msg.getBody());
msg.setBody(resp);
} catch (InvocationTargetException e) {
msg.setBody(e.getCause());
}
return msg;
}
public Object invokeTarget(Object payload) throws InvocationTargetException {
try {
return sendReceiveMessage(payload);
} catch (Exception e) { // catch JMS specific error
throw new AssertionError(e);
}
}
public Object clone() throws CloneNotSupportedException {
try {
return super.clone();
} catch (CloneNotSupportedException e) {
throw new AssertionError(e);
}
}
public boolean isOptimizable() {
return false;
}
public boolean isCacheable() {
return false;
}
public void setCacheable(boolean cacheable) {
}
private Object sendReceiveMessage(Object payload) throws JMSException, NamingException{
Session session = jmsResourceFactory.createSession();
javax.jms.Message message = jmsResourceFactory.createMessage(session);
operationSelector.setOperationName(operationName,message);
((javax.jms.TextMessage)message).setText((String)payload);
Destination destination = (Destination) context.lookup(jmsBinding.getDestinationName());
MessageProducer producer = session.createProducer(destination);
// create a temporary queue and listen to the response
Destination replyDest = session.createTemporaryQueue();
message.setJMSReplyTo(replyDest);
producer.send(message);
producer.close();
MessageConsumer consumer = session.createConsumer(replyDest);
jmsResourceFactory.startConnection();
javax.jms.Message reply = consumer.receive(jmsBinding.getTimeToLive());
consumer.close();
session.close();
return ((javax.jms.TextMessage)reply).getText();
}
}
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