I have a requirement to filter message based on the Message selector but it seems the consumer with messageSelector is not filtering any message.
I have written below code
ActiveMQUtil
import org.apache.activemq.ActiveMQConnectionFactory;
import javax.jms.*;
public class ActiveMQUtil {
private ConnectionFactory connectionFactory = null;
private Connection connection =null;
private Session session =null;
private MessageProducer producer = null;
private MessageConsumer consumer = null;
private Queue destination = null;
private MessageConsumer consumerWithSelector;
public static void main(String []arg) throws JMSException {
ActiveMQUtil activeMQUtil = new ActiveMQUtil();
activeMQUtil.initialize();
activeMQUtil.produceMessage(25000);
activeMQUtil.consumeMessage();
}
private void consumeMessage() throws JMSException {
Message message = consumerWithSelector.receive(100); // this does not select any message
//Message message = consumer.receive(100); // This properly received the message and I can see the message
if(null!=message && message.propertyExists("msgID")){
System.out.println("Consumed message with msgID = " + message.getIntProperty("msgID"));
}
System.out.println("Message consumed "+message);
}
private void produceMessage(int messageID) throws JMSException {
Message message = session.createTextMessage();
message.setIntProperty("msgID",messageID);
producer.send(message);
System.out.println("Produced Message with msgID " + message.getIntProperty("msgID"));
}
private void initialize() throws JMSException {
connectionFactory = new ActiveMQConnectionFactory("vm://localhost");
connection = connectionFactory.createConnection();
connection.start();
session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
destination= session.createQueue("TEST.FOO3");
producer = session.createProducer(destination);
producer.setDeliveryMode(DeliveryMode.PERSISTENT);
consumer = session.createConsumer(destination);
consumerWithSelector = session.createConsumer(destination,"msgID > 900");
}
}
When I tried to use Message message = consumerWithSelector.receive(100);
It does not consumes any message and prints the below output
Produced Message with msgID 25000
Message consumed null
However with Message message = consumer.receive(100);
properly consumes the message and the we get below output.
Produced Message with msgID 25000
Consumed message with msgID = 25000
Message consumed ActiveMQTextMessage {commandId = 7, responseRequired = true, messageId = ID:didnsriina6-54782-1433918830039-3:1:1:1:1, originalDestination = null, originalTransactionId = null, producerId = ID:didnsriina6-54782-1433918830039-3:1:1:1, destination = queue://TEST.FOO3, transactionId = null, expiration = 0, timestamp = 1433918830394, arrival = 0, brokerInTime = 1433918830394, brokerOutTime = 1433918844118, correlationId = null, replyTo = null, persistent = true, type = null, priority = 4, groupID = null, groupSequence = 0, targetConsumerId = null, compressed = false, userID = null, content = null, marshalledProperties = org.apache.activemq.util.ByteSequence@2330633a, dataStructure = null, redeliveryCounter = 0, size = 1040, properties = {msgID=25000}, readOnlyProperties = true, readOnlyBody = true, droppable = false, text = null}
Please let me know whether there is some issue in messageSelector
I have found out the issue.
Here I have created two consumers as
consumer = session.createConsumer(destination);
andconsumerWithSelector = session.createConsumer(destination,"msgID > 900");
Consumer
consumer
is capable of selecting all types of messages as internally it calls method with null selector assession.createConsumer(destination,(String)null);
Hence that message was available to to first
consumer
and myconsumerWithSelector
was not able to see this message.To Solve this
consumer = session.createConsumer(destination);
Now I am able to see the the filtered message.