June 2012 - jboss-user - Jboss List Archives

[jBPM] - Re: jBPM 5.2 set process instance variable from java - NullPointerException

by Salvatore Loria

Salvatore Loria [https://community.jboss.org/people/slash17] created the discussion "Re: jBPM 5.2 set process instance variable from java - NullPointerException" To view the discussion, visit: https://community.jboss.org/message/733626#733626 -------------------------------------------------------------- I found a solution. The problem is that I was not using transactions... Just surround my code in a tm.begin() and tm.commit() and it works fine. I get my tm using the jboss tm locator: TransactionManager tm = TransactionManagerLocator.locateTransactionManager(); tm.begin(); // get and set variables here tm.commit(); Is this the right way to go? -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/733626#733626] Start a new discussion in jBPM at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&con...]

11 years, 9 months

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[EJB3] - Re: Remote access works fine, but local injection does not – any ideas?

by Randahl Fink Isaksen

Randahl Fink Isaksen [https://community.jboss.org/people/randahl] created the discussion "Re: Remote access works fine, but local injection does not – any ideas?" To view the discussion, visit: https://community.jboss.org/message/726584#726584 -------------------------------------------------------------- I have found out that this may be a class loading problem still present in JBoss 7.1.1. My problem looks very similar to what is described very well in this thread: https://community.jboss.org/thread/169828?start=0&tstart=0 https://community.jboss.org/thread/169828?start=0&tstart=0 >From that thread it looks as if the fact that I mave my business interfaces packaged with both my ejb.jar and my web.war creates a class loading problem because each jar/war has its own class loader, which effectively makes the EJB from my ejb.jar incompatible with the business interface in my web.war. Hmmm... perhaps it is time to file a bug report. -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/726584#726584] Start a new discussion in EJB3 at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&con...]

11 years, 9 months

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[jBPM] - Exception handling for technical exceptions

by M S

M S [https://community.jboss.org/people/marcomr] created the discussion "Exception handling for technical exceptions" To view the discussion, visit: https://community.jboss.org/message/743088#743088 -------------------------------------------------------------- Hello. I have a scenario where a java exception inside a work item handler should abort the workflow execution. Up until now I've been mapping this java exception to a business exception (following a suggestion by Kris in which I map the exception as an exit variable and signal from an exit action if said variable is filled) but I'd like to hide this complexity from the modellers: they should know that a service task could abort the workflow and not have to model error events for this. I see that older jBPM versions had the concept of a global exception handler. Is there any similar concept in 5.3? What is the best approach to handle this scenario? Regards, Marco -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/743088#743088] Start a new discussion in jBPM at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&con...]

11 years, 9 months

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[jBPM] - Integrating jBPM 5 into web application - architecture

by Pedro Gonçalves

Pedro Gonçalves [https://community.jboss.org/people/pgoncalves] created the discussion "Integrating jBPM 5 into web application - architecture" To view the discussion, visit: https://community.jboss.org/message/736299#736299 -------------------------------------------------------------- Hello, I've been trying to integrate the jBPM5 into my own web app, but I've some doubts about how to make it. My processes are mostly composed by Human Actions, which make them long running processes. My problem is similar to the one discribed here: https://community.jboss.org/message/636561#636561 https://community.jboss.org/message/636561#636561 I've already configured jBPM to use persistense and I was able to start processes (building kbase, ksession, taskService, etc.). But everytime I start a process, or try to list the started processes I create a new entry on SessionInfo (in the database), and I got a empty list of started processes (I've 2 process instances holding a human action). * It is clear to me that I'm not managing the sessions properly, my question is, what is the best way to do it? :p * Does jBPM5.3 brings any improvement on this? * What are the best practices regarding the use of the kbase, ksessions, taskServices, etc. Thanks in advance! -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/736299#736299] Start a new discussion in jBPM at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&con...]

11 years, 9 months

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[jBPM] - JBPM 5.2 console can't get any Guvnor Process Definition

by Rogelio Di Pasquale

Rogelio Di Pasquale [https://community.jboss.org/people/roger0681] created the discussion "JBPM 5.2 console can't get any Guvnor Process Definition" To view the discussion, visit: https://community.jboss.org/message/646993#646993 -------------------------------------------------------------- I'm using jbpm-5.2.0.Final jbpm-5.2.0.Final-gwt-console guvnor-distribution-wars-5.3.1.Final on jboss-as-7.0.1 I could create process definitions in Eclipse, add them to Guvnor, build the package, create snapshots, etc. But when trying to see process definitions in jbpm-console, I just see nothing. If I try using the rest api ( http://127.0.0.1:8080/gwt-console-server/rs/process/definitions http://127.0.0.1:8080/gwt-console-server/rs/process/definitions), I get: {"definitions":[]} (and JBoss logs says that parsed 0 process definitions). I've made several packages in Guvnor, and jbpm-console seems to be trying to parse processes from all of them, but keeps saying he got 0 processes to parse. Here I upload a list of assets obtained from the Guvnor's rest api ( http://127.0.0.1:8080/drools-guvnor/rest/packages/defaultPackage/assets http://127.0.0.1:8080/drools-guvnor/rest/packages/defaultPackage/assets). Should jbpm-console see any process? What does a process definition look like in the rest API when it is parseable by jbpm-console? Thanks a lot, Roger -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/646993#646993] Start a new discussion in jBPM at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&con...]

11 years, 9 months

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[jBPM] - Re: JBPM 5.1 Final Release with jboss-5.1.0.GA - Human Task taskId

by Samrat Roy

Samrat Roy [https://community.jboss.org/people/whizkid.samrat] created the discussion "Re: JBPM 5.1 Final Release with jboss-5.1.0.GA - Human Task taskId" To view the discussion, visit: https://community.jboss.org/message/727103#727103 -------------------------------------------------------------- I am facing the same problem . Kindly suggest the best way to retrieve the taskID . Getting tasks by users seem like an unsure method as the processInstance can have multiple active tasks allocated to the same user at the same time. Help is requested :-/ -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/727103#727103] Start a new discussion in jBPM at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&con...]

11 years, 9 months

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[jBPM] - Question on Validating process in jBPM5 designer tool

by Chinna Maruthu

Chinna Maruthu [https://community.jboss.org/people/chinna123] created the discussion "Question on Validating process in jBPM5 designer tool" To view the discussion, visit: https://community.jboss.org/message/719851#719851 -------------------------------------------------------------- Hi, When I validate process via jBPM5 designer tool via http://localhost/drools-guvnor http://localhost/drools-guvnor, it says that "User Task has no task form defined.", but I am not able to find out this property to be set. Can anyone help me on this..how to set this? Thanks in advance. it is very urgent pl... Regards Chinna -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/719851#719851] Start a new discussion in jBPM at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&con...]

11 years, 9 months

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[jBPM] - Re: jbpm 5.3 - kSession.dispose() - Error: Session was previously disposed

by Maciej Swiderski

Maciej Swiderski [https://community.jboss.org/people/swiderski.maciej] created the discussion "Re: jbpm 5.3 - kSession.dispose() - Error: Session was previously disposed" To view the discussion, visit: https://community.jboss.org/message/745100#745100 -------------------------------------------------------------- the issue is that you dispose the session before transaction is completed which cause the mentioned error. Make sure that the dispose will happen after transaction completion. HTH -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/745100#745100] Start a new discussion in jBPM at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&con...]

11 years, 10 months

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[jBPM] - When creating a reusable subprocess in Guvnor/ Designer in "Called Element" is only available from default package

by renez

renez [https://community.jboss.org/people/renez] created the discussion "When creating a reusable subprocess in Guvnor/ Designer in "Called Element" is only available from default package" To view the discussion, visit: https://community.jboss.org/message/724922#724922 -------------------------------------------------------------- Hello, I trie to create a reusable subprocess task in my process. When I open "Called Element" in the properties tab I can only see processes of the default package: https://community.jboss.org/servlet/JiveServlet/showImage/2-724922-18228/... https://community.jboss.org/servlet/JiveServlet/downloadImage/2-724922-18... although there are processe in my package: https://community.jboss.org/servlet/JiveServlet/showImage/2-724922-18229/... https://community.jboss.org/servlet/JiveServlet/downloadImage/2-724922-18... Do the subprocess have to be in a different package then the process who is calling them? Thank you! René -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/724922#724922] Start a new discussion in jBPM at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&con...]

11 years, 10 months

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[jBPM] - jbpm5 scale out reference architecture..

by Affan Dar

Affan Dar [https://community.jboss.org/people/affandar] created the discussion "jbpm5 scale out reference architecture.." To view the discussion, visit: https://community.jboss.org/message/717611#717611 -------------------------------------------------------------- After scavenging the forums and docs for jbpm 5 over the last week, I have drafted up the attached 'reference architecture' for a scalable jBPM 5 deployment. Would love to get feedback (aka ripped apart :) ). Here are the key pieces: 1. A shared KnowlegeBase which acts as a repository of processes across the whole deployment (master-slave replicated with writes-to-master and reads-from-slaves etc etc) 2. There are a fixed number of KnowledgeSessions spread across DBs in a DB farm (DB1, DB2) 3. A table contains the mapping between these sessions, the database that they are stored in and the node that is assigned to these sessions. Management of the data in this table is an admin config operation (either automatic or manual). 4. A number of worker nodes which load the KnowledgeSessions that belong to them (as per the table above) 5. Another table that has mapping of processes-to-sessions. This table is updated by the worker nodes when a new process is created. 6. A router or client proxy that routes process instance managment requests as per the following rules: - For process instance creation requests, round robin to any node - For requests pertaining to a specific process instance, consult the table in (5) & (6) and route to appropriate node Now how to scale out: - If the bottleneck is the CPU/memory of the worker nodes then add more nodes and rebalance the session distribution in table (3) - If the bottleneck is the DB capacity or disk then add a database, migrate processes/session data to the new database and update table (3) Of course the resharding above is crude and manual and can probably be more sophisticated but would love to hear thoughts/comments on the basic idea. Also practically speaking, I hope it is possible to migrate a session and processes to a different DB at all? Thanks -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/717611#717611] Start a new discussion in jBPM at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&con...]

11 years, 10 months

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jboss-user June 2012