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Re: Re: Re: Re: Re: Re: Instantiate process from application

by Luke Rasmussen :: Rate this Message:

Thanks Geeta, that's good advice!

I'm happy to report that we were able to get an example working, and fully executed a process without any errors. Thanks again for all the help with this.

Luke R.
Marshfield Clinic

On Tue, Jan 13, 2009 at 9:49 AM, <gramani@...> wrote:

Hi Luke,

Another thing to keep in mind: make sure you do not have nested
transactions. So for every ut.begin(); you should have a matching
ut.commit(); with no ut.begin(); *in between*. This is the meaning of "

javax.transaction.NotSupportedException: Nested transactions not

> supported" error you got. I myself got stuck with this error for a while
before I could figure out what was wrong!

Hope this helps:)
Geeta

"Luke Rasmussen" <lrasm274@...> wrote on 01/13/2009 03:40:24 PM:

> That cleared up that error, and now we just need to give it valid
> package information and we should be all set to go. Thank you very
> much for your help Sasa!
>
> Luke R.
> Marshfield Clinic
>

> On Mon, Jan 12, 2009 at 2:49 PM, Sasa Bojanic <sasaboy@...>
wrote:
> Hi,
>
> It seems your code would work only if after line:
>
> SharkInterfaceWrapper.setProperties("X:\\tws-community-2.
> 2\\conf\\Shark.conf",
> true);

> you put the following:
>
> SharkInterfaceWrapper.getShark();
>
> Regards,
> Sasa.
>
> Luke Rasmussen wrote: We have been trying to get a program working to
> connect to Shark using code from the Shark documentation and this mailing
> list.
>
> We are wondering if anyone can help troubleshoot or explain why we are
> geting the error:
> javax.transaction.NotSupportedException: Nested transactions not
> supported2009-01-12 10:11:44,587: SharkConnectionImpl -> Unexpected error
> while user admin loggs on
> java.lang.Exception: No transaction begun.
> at
> org.enhydra.shark.SharkTxSynchronizationFactory.
> createTxSynchronization(SharkTxSynchronizationFactory.java:83)
> at
>
org.enhydra.shark.SharkUtilities.getTxSynchronization(SharkUtilities.java:469)

> at
>
org.enhydra.shark.SharkUtilities.getResourceFromCache(SharkUtilities.java:492)

> at
> org.enhydra.shark.SharkUtilities.getResource(SharkUtilities.java:515)
> at
>
org.enhydra.shark.SharkConnectionImpl.connect(SharkConnectionImpl.java:73)
> at
> org.enhydra.shark.client.utilities.SharkInterfaceWrapper.
> getSharkConnection(SharkInterfaceWrapper.java:329)
> at
> org.marshfieldclinic.Shark.MSharkClientConnector.
> main(MSharkClientConnector.java:91)
>
>
> We are using the following code:
> public static void main(String[] args)
> {
> try {
> System.out.println("1");
> SharkInterfaceWrapper.setProperties("X:\\tws-
> community-2.2\\conf\\Shark.conf",
> true);
> System.out.println("1a");
>
> UserTransaction ut = (UserTransaction) new
> InitialContext().lookup("java:comp/UserTransaction");
>
> Map cntxt = new HashMap();
>
> ut.begin();
>
> String username = "admin";
> SharkConnection sc =
> SharkInterfaceWrapper.getSharkConnection(username, null);
>
> ut.commit();
>
> System.out.println("7");
> WMConnectInfo wmci=new WMConnectInfo("", "", "", "");
>
> System.out.println("8");
> sc.connect(wmci);
>
> ut.begin();
>
> String pkgId = "1";
> String pDefId = "0";
> String procDefName = SharkInterfaceWrapper.getShark()
> .getXPDLBrowser()
> .getUniqueProcessDefinitionName(sc.getSessionHandle(),
> pkgId, "", pDefId);
> WfProcessMgr mgr = sc.getProcessMgr(procDefName);
>
> ut.commit();
>
> WfProcess process = mgr.create_process(null);
>
> /*if you want to set process variables now, then you can
> do so now as
> follows:*/
> process.set_process_context(cntxt);
>
> process.start();
> ut.commit();
> }
> catch (Exception exc) {
> System.out.println("Exception: " + exc);
> System.out.println("Message: " + exc.getMessage());
> exc.printStackTrace();
> }
> }
>
> Thank you,
>
> Luke R.
> Marshfield Clinic
>

> On Fri, Dec 19, 2008 at 3:18 PM, Luke Rasmussen wrote:
> Thank you very much Geeta! I'll give this a shot and let you know
> how it works for us. Luke R.
> Marshfield Clinic

> On Wed, Dec 17, 2008 at 12:59 PM, wrote:
> Hi Luke,
>
> Here's some code sample from our application, which may help you:
>
> ut = SharkInterfaceWrapper.getUserTransaction();
> ut.begin();
>
> /*"xpdl" below is a domain object for us which has info about package
> defintion, verison etc. and getProcessManager() is * a method I will
> reproduce below.
> */
> WfProcessMgr processMgr = getProcessManager(sharkConnection, xpdl);
>
> process= processMgr.create_process(null);
>
> /*if you want to set process variables now, then you can do so now as
> follows:*/
> process.set_process_context(myContextMap);
>
> process.start();
> ut.commit();
>
> Here's the getProcessManager method using our xpdl domain object:
private
> WfProcessMgr getProcessManager(SharkConnection sharkConnection,
> Xpdl xpdl) throws Exception {
> XPDLBrowser xpdlb = Shark.getInstance().getXPDLBrowser();
> String procDefName =
> xpdlb.getUniqueProcessDefinitionName(
> sharkConnection.getSessionHandle(),
> xpdl.getPackageId(),
> (new Integer(xpdl.getVersion())).toString(),
> xpdl.getProcessDefinitionId());
> WfProcessMgr mgr = sharkConnection.getProcessMgr(procDefName);
> return mgr;
> }
>
> Hope this helps,
> regards,
> Geeta
>
>
>
>
> "Luke Rasmussen"
> To
> shark@...
> 12/17/2008 05:09 cc
PM
> Subject
> [shark] Instantiate process from
> Please respond to application
> shark@...
>
>
>
>
>
>
>
>
>
> We are trying to use the Shark API to instantiate (and interact with) a
> process from an external Java application.
>
> We looked in the Shark code (latest from CVS) and found the SharkTest
> area,
> however it appeared to have a lot of extra calls. Our engine is running
> and the process is loaded, so what is the minimum amount of code needed
> to
> obtain a link to the server instance and instantiate it. Is this
already
> documented somewhere? Has anyone done this, and would you be willing to
> post a simple example to the list?
>
> Thanks in advance for your help.
>
> Luke R.
> Marshfield Clinic
>
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