Can anyone recommend a tool for quickly posting test messages onto a JMS queue? The tool should allow the user to enter some data, perhaps an XML payload, and then submit it to a queue? I know I could probably knock something up reasonably quickly to do this but I thought I'd ask first before reinventing the wheel. Cheers. ...
We have a Java listener that reads text messages off of a queue in JBossMQ. If we have to reboot JBoss, the listener will not reconnect and start reading messages again. We just get messages in the listener's log file every 2 minutes saying it can't connect. Is there something we're not setting in our code or in JBossMQ? I'm new to JMS s...
I am building a site that uses a simple AJAX Servlet to talk JMS (ActiveMQ) and when a message arrives from the topic to update the site. I have Javascript that creates an XMLHttpRequest for data. The Servlet processes the Get Request and sends back JSON. However I have no idea how to connect my Servlet into my ActiveMQ Message Broker. ...
Where can I find a guide for integrating JavaScript and JMS (Java Messaging Service)? I would like a best practice or established technology that allows me to directly or indirectly receive messages from a topic and update a site based on the message. I was thinking of creating two components, a servlet for the Web module, and an MDB (M...
For a typical Web client -to- Servlet/WS -to- Business Tier (Spring or EJB) app, what are the trade-offs of approaches like remote RPC or messaging for Web (Servlet) tier to remote Business tier, aside from the basic sync/async aspects? ...
I have a message broker with some topics, and some set of applications running on it. Now I want to run a new set of the same applications (say for QA environment) on the same topics (on the same broker, if I could). What is the best way to do this. Creating a new broker and or creating a new set of topics is cumbersome, as our environme...
We are using ActiveMQ 5.2 as our implementation of choice and we picked it a while ago. It performs well enough for our use right now. Since its been a while, I was wondering what other Java Message Service implementations are in use and why? Surely there are more than a few. ...
When trying to distribute work that requires a multiple stage processing pipeline what are the communication, synchronization and throughput costs limitations in JMS vs JavaSpaces? ...
How can I instantiate a JMS queue listener in java (JRE /JDK / J2EE 1.4) that only receives messages that match a given JMSCorrelationID? The messages that I'm looking to pick up have been published to a queue and not a topic, although that can change if needed. Here's the code that I'm currently using to put the message in the queue: ...
I'm using the mockrunner package from http://mockrunner.sourceforge.net/ to set up a mock queue for JUnit testing an XML filter which operates like this: sets recognized properties for an ftp server to put and get xml input and a jms queue server that keeps track of jobs. Remotely there waits a server that actually parses the xml once ...
I need to run a JNDI provider without the overhead of a J2EE container. I've tried to follow the directions in this article, which describes (on page 3) exactly what I want to do. Unfortunately, these directions fail. I had to add the jboss-common.jar to my classpath too. Once I did that, I get a stack trace: $ java org.jnp.server.M...
Hi, I'm looking for (simple) examples of problems for which JMS is a good solution, and also reasons why JMS is a good solution in these cases. In the past I've simply used the database as a means of passing messages from A to B when the message cannot necessarily be processed by B immediately. A hypothetical example of such a system i...
I am using activemq to pass requests between different processes. In some cases, I have multiple, duplicate message (which are requests) in the queue. I would like to have only one. Is there a way to send a message in a way that it will replace an older message with similar attributes? If there isn't, is there a way to inspect the queue ...
I'd like to write a MessageConverter class that can wrap another MessageConverter. This MessageConverter would call the child converter, which is assumed to generate a TextMessage. It would take the payload and GZIP compress it, creating a BytesMessage which is ultimately returned to the sender. The problem is in writing fromMessage(). ...
Does everyone just use XML in the message? Are there any good alternatives to XML? If you do use XML, do you define an XML Schema so clients know how to send messages to your service? ...
I'm working on a real time application implemented using in a SOA-style (read loosely coupled components connected via some messaging protocol - JMS, MQ or HTTP). The architect who designed this system opted to use JMS to connect the components. This system is real time so there no need to queue up messages should one component fail (t...
Hi all. I'm looking to get up to speed on JMS for my job. Is there a JMS book that is a must have, or are some better than others? Or will any do? ...
I'm trying to compile the examples that come with activemq in apache-activemq-5.1.0\example\src\ TopicPublisher.java, CommandLineSupport.java on compiling thru netbeans it has some referencing problems saying javax.jms does not exist. I've tried the j2ee.jar, openjms, sun jms but they all give the same error. its also complaining ab...
My question is how do I configure an EJB 3.0 style message driven bean to use a configured JMS datasource in jboss. For example, my MDB looks something like: @MessageDriven(mappedName = "ExampleMDB", activationConfig = { @ActivationConfigProperty(propertyName = "destinationType", propertyValue = "javax.jms.Topic"), @A...
Hi, do you have idea, if there would be some nice way to browse/log JMS queues? (I'm using OpenJMS) For topics I can just add one consumer more and that's about it but with queues I haven't finished with a solution yet. I would like to log all the messages in certain queues and topics without "popping" them from the queue (so that the ...