Asynchronous Publish Subscribe with Session.Client_Acknowledge

Is it possible to do Asynchronous Publish Subscribe with Session.Client_Acknowledge in JMS? If no, then is there any way to acknowledge each message in an Asynchronous Publish Subscribe application?
Any code samples will be helpful..
Thanks in Advance,
Jo

CLIENT_ACKNOWLEDGE does work in asynchronous mode.
I am using Sonic MQ. The sending session is created with CLIENT_ACKNOWLEDGE, in my onMessage(), I am testing the acknowledgement as:
if ( 1 == 2) msg.acknowledge();
else {
Thread.sleep(1000);
sendsession.recover();
Since the condition is never true, the message is never acknowledged by the receiver and stays in the queue all the time.
The confusing point: If you don't call the recover() function and your receiver is running, there would be no more messages to consume. As for SonicMQ, refreshing the Explorer will also show the number of messages in the queue is 0. However, if you Ctrl-C your receiver or call the sendsession.recover(), then you'll find out that the messsages are still in the queue by running the receiving program again or refreshing the queue.
However, the behavior of this may be vendor-dependent. I am just happy that Sonic MQ is doing what I expect.

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Publish subscribe with XI

How do u do publish subscribe with XI? I dont see that in XI as opposed to webMethods or TIBCO. Any thoughts?
gayatri

Hi,
To my knowledge XI dose'nt work on the principle of Publish and Subscribe. XI is Message Driven rather then Event driven. But still we can make even driven message processing but that dose'nt fall under Publish and Subscribe.
Regards,
Prakash

Publish Subscribe Server with Filters

Has anyone managed to get the WebLogic Server 10.3 HTTP Publish/Subscribe server to work with message filters?
With a message filter configured, running with the Sun JVM I see errors of the following type (JRockit gives an error at the same point but it has less information) when I send a message via JMS:
<02-Sep-2008 10:43:23 o'clock BST> <Warning> <HTTP Pubsub Server JMS support> <BEA-2152103> <Error occurs when retrieving message from JMS topic.
weblogic.jms.common.JMSException: [JMSClientExceptions:055115]Error deserializing an object
at weblogic.jms.common.ObjectMessageImpl.getObject(ObjectMessageImpl.java:190)
at com.bea.httppubsub.jms.internal.TopicListener.fetchBayeuxMessageFromJmsMessage(TopicListener.java:97)
at com.bea.httppubsub.jms.internal.TopicListener.onMessage(TopicListener.java:70)
at weblogic.jms.client.JMSSession.onMessage(JMSSession.java:4547)
at weblogic.jms.client.JMSSession.execute(JMSSession.java:4233)
Truncated. see log file for complete stacktrace
java.lang.ClassNotFoundException: com.bea.httppubsub.bayeux.messages.DeliverEventMessage
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
Truncated. see log file for complete stacktrace
My filter is not being invoked (I just throw an exception in the filter and I've also tried setting a breakpoint there in debug mode and neither get hit).
My weblogic-pubsub contains the following:
<wlps:message-filter>
<wlps:message-filter-name>myFilter</wlps:message-filter-name>
<wlps:message-filter-class>pubsubtest.filters.SecurityFilter</wlps:message-filter-class>
</wlps:message-filter>
<wlps:channel>
<wlps:channel-pattern>/abc/**</wlps:channel-pattern>
<wlps:jms-handler-name>abcJmsHandler</wlps:jms-handler-name>
<wlps:message-filter>myFilter</wlps:message-filter>
</wlps:channel>
The class name is definitely correct because the app fails to publish entirely if it is not. I have the pubsub library referenced in my weblogic.xml and it works without the filter so that suggests that the pubsub server is deployed.
Anyone have any ideas?
-Shaun

I'm not familiar with HTTP pub/sub.
My one guess is that the server is attempting to deserialize an Object that's embedded within a JMS Object message, but the classpath is missing required classes in order to instantantiate the Object. In which case the solution is to ensure that the classpath includes any classes that might be embedded within the message object.
If this doesn't help, can you post the full stack trace? The posted stack trace is truncated but the full trace should be in the log, as per the message "Truncated. see log file for complete stacktrace".
Tom

Publish subscribe model with plsql

Hi,
I did not find any sample that shows how to use the publish subscribe model with plsql.
Enqueueing is possible and know how to do it, but how can I subscribe to a topic with plsql.
All samples I found are for Java JMS.
Thanks
Günther

Hello,
I have assumed you are using 10.2
There are examples in
http://download.oracle.com/docs/cd/B19306_01/server.102/b14257/toc.htm
about using multi-consumer queues/topics. There are demos in $ORACLE_HOME/rdbms/demo if you have installed the companion cd.
Thanks
Peter

Publish/Subscribe Client Acknowledgements!?

Hi all.
Im experimenting with the simplePublishSubscribe example from sun's JMS tutorial, trying to understand how the acknowledgements work when in CLIENT_ACKNOWLEDGEMENT mode.
So I set the above mode for the session and run the example without any message.acknowledgment() 's. So now after the the publish message have been delivered to the subscriber, without being acknowledged from the client, running topicSession.recover() should result in all the previous messages being redelivered to the client as they have not been acknowledged and therefore not deleted from the topic.
However after trying this it would seem that not messages are redelivered to the client!? Any advice on this scenario. It is important since the application we are designing relies on client acknowledgements in an asyncronous mode.
Thanks
(PS...i have search the forum and nnot found a definitive answer to this problem)

Hi,
The following code should work as you expect:
session = connection.createTopicSession(false,Session.CLIENT_ACKNOWLEDGE);
subscriber = session.createSubscriber( topic );
message = subscriber.receive();
mID = message.getJMSMessageID();
session.recover();
message = subscriber.receive();
newMID = message.getJMSMessageID();
if( ! mID.equals( newMID ) )
//fail!!!
Arnaud
http://www.arjuna.com

Need to "publish/subscribe" my Contacts info like we could in Addressbook. Any ideas?

Being a LONG TIME Mac User (yes, I owned a Lisa in the early 80’s and it still runs!) I have lived thru the transition from OS 6 and 7, then 8, 9 and finally the upgrade to OSX and thru its incarnations up to my current Maverick (aka OS 10.9.4). I am no stranger to changes on the Mac OS. But the new Contacts file within iCloud has me lost. For many years my spouse and I would cross share portions of our personal AddressBook using that softwares publish/subscribe function. It worked great! I could have a list of his relatives/names/phones/addresses in case I needed them - and he had the same for me. With a glance he could see that my sisters middle name was Louise and she hated it. Useful info for when she was being icy to him on a phone call. <grin> We had the shared groups identified as coming from my AddressBook or his, and we could share subgroups or the entire thing as we might choose.
When we went to iCloud and now Maverick, there is no longer a way to share the contact info short of buying the Apple Server software and setting up our own server in house. While I might be able to justify doing so, it is a huge hassle for a very small gain in our case. So that is a last-resort solution, so far.
I would again like to be able to share portions (groups/or sub-groups) of my contact database files with specific individuals, using something like a publish/subscribe feature that would require both parties to agree to the sharing and then once that was done, it should implement automatically and update every time an items is changed, added, deleted on the owners main copy of Contacts. Ideally this would work thru iCloud and its “push update” function. But just to have it working is the goal here. I really do not care HOW it works.
Ive searched, even called a buddy who works the Genius Bar at my local Apple Store. So far, no one seems to have any suggestion other than the aforementioned Maverick Server idea. Frankly with three computers, two printers, a few iPads and iPhones, and a couple of Apple TVs in the house, I am hard pressed to justify the time and energy running a server would require. There has to be a better way to do this. If friends can push their Contact Info to their Android Phones, I should be able to share my Contact files with my spouse! Thanks for your thoughts/suggestions/and hopefully for a solution.

Is the disk cache and the memory cache enabled?
You can check these prefs on the about:config page.
* http://kb.mozillazine.org/browser.cache.disk.enable
* http://kb.mozillazine.org/browser.cache.memory.enable
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If you see a warning then you can confirm that you want to access that page.<br />
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XControl publish subscribe?

Hi all
I'm trying to implement a publish subscribe messaging pattern using XControls and LVOOP.
I have various XControls which represent different views of the state of an object.
I want all my XControl (clients) to be updated when the object (publisher) changes its state.
I've achieved this sort of functionality before using VI's running in sub-panels that wait on a user event created by the publisher.
I gather dynamic events are not available with XControls, so have tried to create a list of XControl clients that could be notified by a XControl method call.
I've found a way of notifying individual clients by creating a method that fires the Display State ability but really want to manage all the XControls as a collection.
An array can't seem to store references for the XControls as each is a different type.
I've also tried using a Data Value Reference for each XControl reference hoping that this generic type could be stored in an array but no joy.
The only way I've found is for the main vi to register for the publisher user event and then call the notification method of each XControl explicitly. This messes up the main vi and is not an elegant solution.
Does anyone know a way of achieving my desired functionality?
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Phill
Solved!
Go to Solution.

Thanks tst
I have attached a little sample of what I thought might be nice.
I am building a P&I diagram out of DSC elements.
The valve will ultimatly get more properties like OPC tags, names etc.
I thought to attach the pipes to it so they get automatically activated, when the valve turns on.
But I guess that would require some extra programming anyway because there will be two endpoints on the sides of the pipe to control a flow.
Casting to more generic, even only a control, is obviously not possible.
Hierarchy for Xctrl is also not provided, no inheritence.
Is there any another way to have a class with a Control style FP ?
I am still at the beginning of the project so I have more options to think of......
Gabi
7.1 -- 2013
CLA
Attachments:
Valve.zip ‏149 KB

Having private time blocked on published calendars with limited shared data

I need to be able to share calendars in an enterprise environment (all Mac) and be able to have a public calendar that can have private entrees that block out a portion of the day, but the entree data itself is only available to me. How do I create a calendar entry where the rest of the group knows I've blocked that time, but not the reason?
We currently use busysync for the publish/subscribe solution. If obtaining this functionality from OSXS 10.5 (or 10.6) becomes reality, we'll happily consider the product.

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Ask for further instructions.
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The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.

Publish/Subscribe

hi,
i want to try out publish/subscribe, but i dono where to start with and how to go abt. can anyone advise me like the softwares and tools i can use, what do i study for that would be very much useful.
thanks in advance !

I am not sure about 8i, but if you use Oracle9i, then administration of AQ is included in Enterprise Manager.
However you cannot see there the content of messages on the queue; just the number of messages in individual states.
Anyhow, I would advice you to move to Oracle 9i, if you can; queues have some fine new features there.
Radek

Entity Object Publish/Subscribe Events Wizard

Hi,
I'm interested in knowing how exactly works the Entity Objects Publish/Subscribe Events, anybody could help me? Redirecting me to any doc web page, pdf, .... or maybe telling me a little bit more that I can imagine about how it works.
Thanks in advanced.

Repost for a better format, sorry...
I did a quick test on Departments and Employees tables in HR schema.
1, Added CommissionChangeEvent as published event for Employees entity. Set the new commission value (Number) as parameter. These are the generated methods:
* Adds <code>l</code> as an event listener for the event CommissionChangeEvent
public void addCommissionChangeEventListener(JboEventListener l)
((EmployeesDefImpl)getDefinitionObject()).addCommissionChangeEventListener(l);
* Removes <code>l</code> as an event listener for event CommissionChangeEvent
public void removeCommissionChangeEventListener(JboEventListener l)
((EmployeesDefImpl)getDefinitionObject()).removeCommissionChangeEventListener(l);
* Publishes the event named CommissionChangeEvent
public void CommissionChangeEvent()
((EmployeesDefImpl)getDefinitionObject()).publishCommissionChangeEventEvent(createCommissionChangeEventEventData());
* Creates event data method for event CommissionChangeEvent
public JboEventObject createCommissionChangeEventEventData()
JboEventObject eo = new JboEventObject(this, "CommissionChangeEvent");
try
eo.put(new String("CommissionPct"), getAttribute("CommissionPct"));
catch(Exception ex)
ex.printStackTrace();
return eo;
2, Change setCommissionPct method as this:
* Sets <code>value</code> as the attribute value for CommissionPct
public void setCommissionPct(Number value)
setAttributeInternal(COMMISSIONPCT, value);
System.out.println("From EmplyeesImpl.java, Commission Pct is being changed. Firing the event...");
//fire event
CommissionChangeEvent();
System.out.println("Event fired from EmplyeesImpl.java on department ID: " + this.getDepartmentId());
3, Created a method in DepartmentsImpl.java like this:
public void eventFired(Number theNewPct)
System.out.println("In departmentsImpl: event fired with param: " + theNewPct + " on department id: " + this.getDepartmentId());
4, In Entity editor, set enentFired method as to be invoked on event.
Here's the output when change commission:
From EmplyeesImpl.java, Commission Pct is being changed. Firing the event...
In departmentsImpl: event fired with param: 0.5 on department id: 100
Event fired from EmplyeesImpl.java on department ID: 100
Looks like this is a nice inter-entity communication mechanism. It can pass paramter and recognize FK link correctly. Not sure whether it can be used to interact with external message queue, though...
Charles

Multiple listeners don't work for publish subscribe?

We wrote a publish/subscribe system based on JMS. It works fine so long as there is only one subscriber/listener. Normally this listener resides in the ejb space. Once we introduce another listener (e.g. by running another java program on the same host), the
          original listener STOPPED receiving messages -- is this a WLS bug ?


Well pub/sub wouldn't be pub/sub unless it allowed for multiple
          subscribers.
          I think that 6.1SP2 had problems with certain combinations of listeners,
          in particular MDB and non-MDB. (Not sure.)
          What is your version and service-pack level?
          kin wrote:
          > We wrote a publish/subscribe system based on JMS. It works fine so long as there is only one subscriber/listener. Normally this listener resides in the ejb space. Once we introduce another listener (e.g. by running another java program on the same host), the
          > original listener STOPPED receiving messages -- is this a WLS bug ?

Publish/subscribe pattern in PI

Hi,
I have a doubt about Web Services.
Is it possible to apply a publish/subscribe pattern in PI? that is to say, a service generates a message and keep it in a queue, so that one o more systems can subscribe to that queue for consuming the service asynchronously?
If so, how could it be configured?
Thanks in advance,
Samantha.

Samantha,
The new version of PI 7.3, that is not available yet, you have this feature for JMS.
Please check out this link: [What are the new service bus-based capabilities for SAP NetWeaver Process Integration 7.3 ?|https://websmp107.sap-ag.de/~sapidb/011000358700001199312010E.pdf]
Best regards,
JN

XML Publisher Report with PL/SQL

Hi
Like to know how to develop the XML Publisher Report with PL/SQL, i did the following
1. created a pkg like as below
CREATE OR REPLACE PACKAGE BODY APPS.TEST_XMLTAG_PKG AS
PROCEDURE main (errbuf OUT VARCHAR2,
retcode OUT NUMBER
) IS
BEGIN
DECLARE
ctx DBMS_XMLGEN.ctxHandle;
xml CLOB;
BEGIN
ctx := dbms_xmlgen.newcontext('select * from scott.emp');
dbms_xmlgen.setrowtag(ctx, 'MY-ROW-START-HERE');
xml := dbms_xmlgen.getxml(ctx);
dbms_output.put_line(xml);
Fnd_file.put_line (fnd_file.LOG, XML);
END;
END;
END TEST_XMLTAG_PKG;
this pkg produces the output with xml tag in the view log.
I have registered the conc program & xml rtf but it does not produce the output in PDF, , I am not able to get the xml tag when i click the Diagnostics --> View XML.
can you please let me know the next steps involved.
Regards
Yram

I think the problem is because there is no begin and end tag. save the xml from the logfile and open with xml editor or IE.. then you will see the problem.
add Begin and end tag...then you should be fine.. i.e
fnd_file.put_line(fnd_file.output,'<EMP_DATA>'); -- begin Tag
tx := dbms_xmlgen.newcontext('select * from scott.emp');
dbms_xmlgen.setrowtag(ctx, 'MY-ROW-START-HERE');
xml := dbms_xmlgen.getxml(ctx);
dbms_output.put_line(xml);
Fnd_file.put_line (fnd_file.LOG, XML);
fnd_file.put_line(fnd_file.output,'</EMP_DATA>'); -- End Tag
Hope this helps..>Good Luck
Ravi

Problem with sessions in Kate Editor

Hey guys!
I'm using Kate Editor to code and i'm having problems with sessions. If kate is open and I logout KDE, when I come back to KDE all my customizations in Kate's session (activated plugins, font size, etc) are lost.
If I manually close Kate before logout from KDE, all the customizations are kept when a manually start Kate. I tried a lot of workarounds, but none worked.
Is this a bug? Someone else with this issue?
Thanks in advance!

The Warning errors are simply because you don't have the tablespaces, users, and roles defined in your application system under the DB Admin tab. Unless it is important to you to capture the physical implementation of your tables exactly as well as the table definitions, you can safely ignore these. If the physical implementation IS important to you, then you need to create these tablespaces, roles and users under the database that you created under the DB Admin tab before you start the capture.
The Error is because in the set of objects you are capturing there is a foreign key that references the table named "PLEASANT". This table must be among the objects that you are capturing, or must already be in a Table Definition in your application system in the repository.

Problem with Sessions in JSP

Hi,
I am working on a JSP based website, where I am facing problem with sessions. The user is asked to login by providing her id and password. If found correct, a bean is created and populated with all her details and placed in session scope. I plan to use the information stored in the bean on other related pages until she logs out.
<jsp:useBean id="validUser" scope="session" class="UserBean" >
<c:set target="${validUser}" property="userId" value="${fn:trim(dbValues.UserId)}" />
<c:set target="${validUser}" property="userName" value="${fn:trim(dbValues.UserName)}" />
</jsp:useBean>
<c:redirect url="userHome.jsp" /> The user is presented her homepage - 'userHome.jsp', where she can find various links, like 'Update Profile', 'Pay Registration Fees', 'Book Room' etc. The information stored in the bean is available on 'userHome.jsp'page.
<A HREF='userHome.jsp'>Home</A>
<A HREF='editPersonal.jsp'>Update Profile</A>
<A HREF='registrationFee.jsp'>Pay Registration Fees</A>
<A HREF='bookRoom.jsp'>Book Room</A>
<A HREF='logout.jsp'>Logout</A> The problems are:
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<%-- Verify that the user is logged in --%>
<c:if test="${validUser == null}">
<jsp:forward page="loginForm.jsp">
<jsp:param name="origURL" value="${pageContext.request.requestURL}" />
<jsp:param name="errorMsg" value="You must be logged in to access this site." />
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</c:if> 2. The URL shows an additional jsessionid, which my client doesn't want to see.
3. On every click on any link, the value of this jsessionid changes.
What I presume, when I am clicking on different links, my session changes, and so I am seeing a different jsessionid. And since session is changing, therefore the bean is not available in a different session.
All this works fine with localhost, problem comes into picture, when I upload my pages to the server.
Puzzled, can anyone help, where am I going wrong? Let me add here, I am new to JSP and hence don't have much resources with me.

There are several ways sessions can be exchanged between the browser and the server in a j2ee web application.
1. The default is through cookies. However when the client does not accept cookies, the server appends the session id to the url.
2. Some servers also facilitate session information exchange using session id in the url even if the client does accept cookies. This is usually ahieved through a setting in some server configuration file.
You will have to find out why the server in your application is appending the session id to the url.
Whatever be the case, the server should be able to look up the session from the incoming request (be it from the session id in the url or a session cookie).
When session information is exchanged through the JSESSIONID in the url, you should ensure that each and every url that goes to the server has this input parameter. To do that all links and form post urls in your servlet/jsp should be treated with a call to encodeURL().
For example, in a jsp
   <a href = "<%=response.encodeURL("/nextJsp.jsp")%>">Click here </a>
or
   <form action = "<%=response.encodeURL("/nextJsp.jsp")%>">
   </form>etc.
ram.

Asynchronous Publish Subscribe with Session.Client_Acknowledge

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