JMS question

Hi,
Can the blazeds messaging system subscribe AIR clients to a JMS one-to-many topic?
for example, I have a java program that creates a JMS topic called latest news. Some java subsystem adds new news items to this topics. I would like Flex AIR apps Consumers to subscribe to this JSM topic via blazeds so that they all get the broadcasted message
possible?

Ok, so it should be something like this:
MessageBroker msgBroker = MessageBroker.getMessageBroker(null);
AsyncMessage msg = new AsyncMessage();
msg.setDestination(/*YourDestinationId*/);
msg.setClientId(UUIDUtils.createUUID(false));
msg.setMessageId(UUIDUtils.createUUID(false));
msg.setTimestamp(System.currentTimeMillis());
String messageBody = "Foo";
msg.setBody(messageBody);
msgBroker.routeMessageToService(msg, null);
And the answer to your JMS question is yes. As long as you use JMS topics (not queues as a single queue is meant to be consumed by a single client), every Flex Consumer will get the message.

Similar Messages

Distributed JMS Question

Domain 1 (host1)
=========
I have 2 JMS servers target to 2 managed servers. I have Distributed Queues (distqueue1 & distqueue2) in a module targetted to both of the jms servers.
Where Managed server 1 --> Host 1
Managed server 2 --> Host 2
Domain 2 (host2)
========
I have an application deployed on the clustered environment.
=============================================================-
Till now I use to have my app connected to (Domain 1(host1)) to one jms server (targetted on ManagedServer 1), now I want my application to do lookup to the clustered JMS on both the servers.
So my question is how we proceed with the application to talk to the clustered jms (on multiple managed servers (on multiple physical hosts))

You can specify the distributed destination JNDI name for the destination. Weblogic provides cluster wide JNDI replication - so any object that is deployed to any of the managed servers or to the cluster will be visible in the global JNDI tree of all the managed servers in the cluster. So for the JNDI lookup you can connect to a single managed server, or, A better load balanced approach would be to use a dns lookup where your app connects to a dns name and the dns is resolved to different IP address ( man1 IP, man 2 IP etc) on each lookup.
You will have to get the load balancing setup on the Connection factory and the CF has to be deployed to a cluster to avoid unwanted routing between the man servers.
This has been discussed a lot in the jms forum. Please search and you will get more details.
One good link I got with a quick search
Clustering with a load balancer
Edited by: atheek1 on 25-Mar-2010 01:02

WLS 6.1 JMS Questions

          A couple of questions:
          I'm using a user txn on a servlet to insert into a JMS queue, and update a field
          in the database. I'm using a Message-driven Bean (with container managed txn)
          to service said queue... When I rollback the txn in the MDB, it looks like it
          actually rolls back the servlet's txn as well! I was expecting this to result
          in the message being put back onto the queue only... Can I correct this behaviour?
          Is there a way for me (in the MDB) to take the message and place it back onto
          the queue for processing later (e.g., 5 minutes)?
          Thanks in advance, Chad


Chad Stansbury wrote:
          > A couple of questions:
          >
          > I'm using a user txn on a servlet to insert into a JMS queue, and update a field
          > in the database. I'm using a Message-driven Bean (with container managed txn)
          > to service said queue...
          > When I rollback the txn in the MDB, it looks like it
          > actually rolls back the servlet's txn as well! I was expecting this to result
          > in the message being put back onto the queue only... Can I correct this behaviour?
          You are right, this is odd and incorrect behavior, but I can't imagine
          how it happening. Contact customer support.
          >
          > Is there a way for me (in the MDB) to take the message and place it back onto
          > the queue for processing later (e.g., 5 minutes)?
          >
          There are a couple of ways. You can configure a "RedeliveryDelay" on
          the destination via the console, this delays redelivery of rolled back
          messages. Or you can commit() the transaction, and resend the message
          to its originating queue using a
          ((weblogic.jms.extensions.WLMessageProducer)producer).setTimeToDeliver(5000);
          > Thanks in advance, Chad
          Your welcome,
          Tom

Wls10.3 - JMS questions

Hi
What does it mean when you target a JMS module (and queues... in that module) to a cluster rather then to a specific JMS server ?
Is it perhaps deployed to all JMS servers in the instances in that cluster ?
Might help if i explain what i'm after. I want to create a JMS module containing two JMS queues and a connectionfactory and then deploy that module on all servers in a cluster.
So i created a JMS module and added the queues, cf and then targeted the module to my cluster. I used distributed queues and then set "default targeting".
But what about the JMS server(s)/persistant store then ? Thus, my questions above.
/Laban
Edited by: user1069472 on 2008-okt-29 04:16

Laban,
The recommended best practice is to use the "Advanced-Targeting" to create explicit sub deployments for the module resources and target those sub deployments to a specific (list) JMSServer, SAFAgent, WLS Server or to the Cluster appropriately. The "default-targeting", while it simplifies the targeting process, it might introduce some undesirable effects for resources such as "uniform-distributed-destination" that gets targeted to a cluster might end up having members all the available JMSServers in that cluster. Since this might not be a desirable in all the cases, it is not recommended as a best practice for module targeting.
Please look at http://e-docs.bea.com/wls/docs103/cluster/service_migration.html#wp1067914 for a list of best practices for creating/targeting JMS Modules/Resources (you can ignore the migration aspect of this page).
For more details on the JMS Modules /resource configuration, please look at http://e-docs.bea.com/wls/docs103/jms_admin/overview.html.
Thanks
Kats

File adapter to JMS question.

Hi All,
I have a file to JMS scenario.
I wanted to know
1.If PI is down and the messages are stacked in my file outbound folder.. when PI comes back up..
   incase if the filenames have a timestamp..is there a way for PI to pick them up in serial order.. oldest
   timesamp first?.
2.If my target system is down, in this case my messages will be stuck in PI..but when my target
   system is back up.. and if the source sends a message at the same time.. this will get processed
   before the messages that are in error state in PI and can be resubmitted. Is there a way to control
   this.. so that a new message is not processed before the old ones have been resent?.
   My Main aim is for the messages to go in the order of which they are sent according to the oldest
   timestamp first.
   Has anyone encountered a similar situation for serialisation?.
   Thanks a Lot!!.

1. For setting the order
For this you have to set the Quality of Service to Exactly once in order. and set a Queue Name.
In this way all the messages picked up will go to the same queue. Only the first message entered has to get processed before the new messages
2.For processing sequence
Once that is done select the processing sequence as By Date. In this way the oldest will be picked up first.
Here the problem is files created at same second will get picked up in any order. For minutes the order is preserved.

SAP XI JMS Question

All,
I have a database of data in SAP XI 3.0 (SP17). I run a Function Module to extract this data and want to send it to the JMS
   Adapter to deliver it to WebSphere MQ to a remote MQ QManager on another System. A return code from JMS Adapter indicating that
   the message was put on MQ is all that is needed. I am not waiting for the remote MQ to reply. There is no reply.
   Using Service Pack 17 SAP XI, can the Abap Code starting the XI JMS Scenario receive a reply from the JMS Adapter to know that MQ
   received the data? Does this have to be a sync scenario or can the scenario be async?
   Does this type of Scenario require the use of a BPM with sync/async bridge? I have tried this approach and, on too many occasions,
   the reply never comes back to the SAP XI Abap Stack.
   Any detailed help for how to accomplish this without upgrading to SP19 for the new sync/async JMS Adapter process would be greatly
   appreciated.
   Or is that the only alternative?
Thanks in advance!
Michael

Michael,
I am on XI 3.0 SP16. In my scenario the JMS call is asynchronous
The best way to determine if the message was sent successfully is to switch on debugging for JMS messages
In Visual Administrator navigate to Cluster.Services.Log Configurator
Select the locations tab and navigate to
ROOT LOCATION.com.sap.aii.af.mp.jms.ejb
Then set the severity level (eg to debug)
Run your scenario then in Visual Administrator navigate to Cluster.Services.Log Viewer to view your trace. Alternatively you can run the stand alone log viewer
To access documentation for Logging and Tracing to go to the following URL
http://help.sap.com/saphelp_nw2004s/helpdata/en/64/0b59010a65de44be4f26cb57b9580d/frameset.htm
To physically see if the JMS message has reached the MQ server I used two administration tools (1) log onto the MQ server and use the Websphere MQ Explorer tool or (2) a stand alone tool called rfhutilc.exe
Regards,
Mike

Two short Soap over JMS questions

Hello everybody,
ís it possible to call a SOAP Service over JMS with the Oracle BPEL Process Manager, when the SOAP Service uses a "non-Oracle" queue (e.g. Apache ActiveMQ)?
Is the schema for the namespace "http://www.oracle.com/technology/oracleas/wsdl/jms" or documentation for the elements <jms:address> and <jms:propertyValue> available somewhere?
Thank you for your time.

Ok, then I think I am on the right track, but still I cannot get this scenario to work.
JMS (SOAP)-> SAP PI(ccBPM) --> IDOC
I put SOAP messages on the sender queue, those messages dissapear from that queue, so I would expect that I can see them back in PI, but no trace is left behind in the monitoring area... It is like they've never been read from the input queue.
What is happenning with those messages? The definition of the SOAP envelope has been uploaded as an external definition and linked to a message interface in the repository.
JMS Communication channel checked but it is also fine.
Any clues where to look?
Thanks.

SAP JMS Question

I think I know the answer to this, but I have to check.
Are there more than one kind of <b>Express</b> messages in SAP?
Are there more than one kind of <b>Persistent</b> message type in SAP?
Or are the message types pretty much JMS specifications only ?
Thanks, John

Hi,
The messages which are used in JMS are the specifications of JMS only and not that of SAP.Two ways of sending messages in JMS as u know is "topic" & "subscribe".SAP WAS server which supports J2EE specifications supports JMS there by the msgs are pretty much JMS specifications only.
If you want to store ur java objects as persistent in DB (not related to this q) then SAP WAS supports JDO,SQLJ,JDBC etc.
Hope it helps.
Rdgs,
Guru

OC4J/JMS question

Is there a possibility to send messages to OC4J/JMS queue from remote client program?

Yes, exactly this way I obtain a connection factory. Here is piece of code, how I do it:
          env.put(Context.INITIAL_CONTEXT_FACTORY, "com.evermind.server.rmi.RMIInitialContextFactory");
          env.put(Context.SECURITY_PRINCIPAL, "admin");
          env.put(Context.SECURITY_CREDENTIALS, "admin");
          env.put(Context.PROVIDER_URL, "ormi://localhost:23791/");
          Context context = new InitialContext(env);
          QueueConnectionFactory connectionFactory = (QueueConnectionFactory)context.lookup("jms/my/test.queueConnectionFactory");
Then I obtain a connection, lookup my queue and create sender:
QueueConnection connection = connectionFactory.createQueueConnection();
          QueueSession qSession = connection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
          Queue q = (Queue)context.lookup("jms/my/test.queue");
          QueueSender sender = qSession.createSender(q);
          connection.start();
Then I try send my message and it fails on sender's send method:
TextMessage message = qSession.createTextMessage();
message.setText("Text message text");
sender.send(message);
And exception is:
javax.jms.JMSException: Unable to connect to JMSServer (/127.0.0.1:9127)
     at com.evermind.server.jms.EvermindQueueConnection.connect(E[i]Long postings are being truncated to ~1 kB at this time.

JMS Questions

I want to send sms from mobile to PC which should be collected in Sun Java System Application Server(9.1) queue.
and in future I want the to send the sms back to mobile from JMS queue.
Please inform me ragarding the softwares required, documentation as to how to configure Sun AS.
Also is it possible for the JMS application to recieve emails???

Hi,
You can get the sample JMS application with the server installation..Weblogic, Websphere.

Basic JMS question

We have weblogic 5.1 running on Server A and some java apps running on server B (in the same domain). If I want a Java program on server B to access JMS to get messages, Do i need an instanceof Weblogic installed on Server B and communicate with Server A? If not how do I get to JMS on Server A.
Thanx

The JMS services on your Server A are accessible via the JNDI context provided by server A. All you need is to connect to server A and lookup the JMS service by name. The following code snippet illustrates:
// Firstly, setup the server A connection JNDI configuration
Properties env = new Properties();
env.put(Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory");
env.put(Context.PROVIDER_URL, "t3://serverA:8001/");
env.put(Context.SECURITY_PRINCIPAL, "system");
env.put(Context.SECURITY_CREDENTIALS, "weblogic");
Context ctx = InitialContext(env);
// Then access the server A JMS services.
// Note: the jndi name will be configured in your weblogic config files.
TopicConnectionFactory factory = (TopicConnectionFactory) ctx.lookup("<jndiName>");
Hope this helps.
Daniel

Newbie JMS Question

hi,
I am writing an client in Pascal (DELPHI) to Connect to JMS of Weblogic
--

FYI....
I had the same problems and searched all around but to no avail...found that my problem was leading slashes in the jndi name.
simple but hard to find.
hth

Rookie JMS question.

I'm trying to use WebLogic JMS as a Messaging Provider for another application server. I tried using the 'thin client' approach (wljmsclient.jar). That threw a ClassNotFoundException (weblogic.kernel.Kernel).
          Sure enough, that class is in weblogic.jar (which I did not use).
          Substituting the weblogic.jar is a non-starter since it 'clashes' some of the XML parsing classes (javax.xml.validation.Schema, etc.)
          Anyone have any ideas ?
          Edited by drusnak at 05/24/2007 12:01 PM

Thanks for the reply, Tom....
          I have that doc. BTW, wlclient.jar was in the classpath. I was hoping for a 'magic bullet' revalation. This is what I find curious is that the 'client' throws a ClassNotFoundException (for weblogic.kernel.Kernel).
          This class is ONLY present in webLogic.jar. So it looks like it's trying to dynamically load a class that it (logically) shouldn't.
          [5/24/07 15:53:00:803 EDT] 000000c6 WebApp E SRVE0026E: [Servlet Error]-[JmsQueueWriter]: java.lang.Error: Call BEA Support
               at weblogic.jms.dispatcher.JMSDispatcherManager.getJMSThreadPoolSize(JMSDispatcherManager.java:145)
               at weblogic.jms.dispatcher.JMSDispatcherManager.initialize(JMSDispatcherManager.java:86)
               at weblogic.jms.dispatcher.JMSDispatcherManager.getLocalDispatcher(JMSDispatcherManager.java:167)
               at weblogic.jms.dispatcher.JMSDispatcherManager.getLocalDispatcherWrapper(JMSDispatcherManager.java:216)
               at weblogic.jms.client.JMSConnectionFactory.setupJMSConnection(JMSConnectionFactory.java:230)
               at weblogic.jms.client.JMSConnectionFactory.createConnectionInternal(JMSConnectionFactory.java:299)
               at weblogic.jms.client.JMSConnectionFactory.createQueueConnection(JMSConnectionFactory.java:179)
          Caused by: java.lang.ClassNotFoundException: weblogic.kernel.Kernel
               at java.net.URLClassLoader.findClass(URLClassLoader.java(Compiled Code))
               at com.ibm.ws.bootstrap.ExtClassLoader.findClass(ExtClassLoader.java(Compiled Code))
               at java.lang.ClassLoader.loadClass(ClassLoader.java(Compiled Code))
               at java.lang.ClassLoader.loadClass(ClassLoader.java(Compiled Code))
               at java.lang.Class.forName1(Native Method)
               at java.lang.Class.forName(Class.java(Compiled Code))
               at weblogic.jms.dispatcher.JMSDispatcherManager.getJMSThreadPoolSize(JMSDispatcherManager.java:128)
          Edited by drusnak at 05/24/2007 2:18 PM

Embedded JMS question

The JMS server that comes with the install of the Application Server is called OC4J, correct?
And OJMS is part of the database product then?
Trying to get the 2 different providers straight. I see where the documentation lists "OJMS has been integrated into OracleAS 10g using the JCA adapter while at the same time leveraging Advanced Queueing in the Oracle Database for persistence and recoverability."
Does this mean that both are included in the Application Server, but in order to use OJMS you must use the JCA adapter and the separate Oracle Database?

The reason I was asking was in this document:
http://www.oracle.com/technology/tech/java/oc4j/904/collateral/OC4J-FAQ-JMS-904.html
It says...
"Oracle offers two JMS providers; Oracle JMS (OJMS) and OracleAS JMS. Which one should I be using?"
And just below it...
"Oracle offers two JMS providers; OJMS (AQ/JMS) and OC4J/JMS. Which one should I be using?"
Those statements had lead me to believe that OJMS=AQ/JMS and OracleAS JMS = OC4J.
Was this a typo, and shouldn't have used OC4J where it did?

JMS Selectors

Hi,
When specifying a selector for a given JMS message, where's the message filtered out/in? The WL server or the client API?
I'm assuming the former, but could not find any information on the documentation. If it's important for my question, I'm using the .NET api rather than the Java one.
Any clarification would by greatly appreciated.
Best regards,
Luís Almeida
Edited by: user12860813 on Jan 3, 2011 11:34 PM

You can try posting JMS question to the JMS newsgroup.

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