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jPBM 5.1, persistent processes get finished without regard to session
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created by <a href="http://community.jboss.org/people/mnorsic">Miljenko Norsic</a> in <i>jBPM</i> - <a href="http://community.jboss.org/message/626390#626390">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I've made a small sample app that stores knowledge session into a H2 database, based on jBPM user guide.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><p>{code}</p></p><p>PoolingDataSource ds = new PoolingDataSource();</p><p> ds.setUniqueName("jdbc/BitronixJTADataSource");</p><p> ds.setClassName("org.h2.jdbcx.JdbcDataSource");</p><p> ds.setMaxPoolSize(3);</p><p> ds.setAllowLocalTransactions(true);</p><p> ds.getDriverProperties().put("user", "sa");</p><p> ds.getDriverProperties().put("password", "");</p><p> ds.getDriverProperties().put("URL", "jdbc:h2:tcp://localhost/~/test");</p><p> ds.init();</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p> EntityManagerFactory emf = Persistence.createEntityManagerFactory("org.jbpm.persistence.jpa");</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p> // load up the knowledge base</p><p> KnowledgeBase kbase = readKnowledgeBase();</p><p> Environment env = KnowledgeBaseFactory.newEnvironment();</p><p> env.set(EnvironmentName.ENTITY_MANAGER_FACTORY, emf);</p><p> env.set(EnvironmentName.TRANSACTION_MANAGER, TransactionManagerServices.getTransactionManager());</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p> Integer sessionId = null;</p><p> if (args != null && args.length == 1) {</p><p> sessionId = Integer.valueOf(args[0]);</p><p> }</p><p> StatefulKnowledgeSession ksession = null;</p><p> if (sessionId == null) {</p><p> // new session</p><p> ksession = JPAKnowledgeService.newStatefulKnowledgeSession(kbase, null, env);</p><p> } else {</p><p> // load existing session from database</p><p> ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(sessionId, kbase, null, env);</p><p> }</p><p>  // start the transaction</p><p> UserTransaction ut = (UserTransaction) new InitialContext().lookup("java:comp/UserTransaction");</p><p> ut.begin();</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>  // start 5 new process instances</p><p>ksession.startProcess("com.sample.bpmn.hello");</p><p>ksession.startProcess("com.sample.bpmn.hello");</p><p>ksession.startProcess("com.sample.bpmn.hello");</p><p>ksession.startProcess("com.sample.bpmn.hello");</p><p>ksession.startProcess("com.sample.bpmn.hello");</p><p> ksession.dispose();</p><p> ut.commit();</p><p>{code}</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>For each knowledge session, 5 processes are created, and that process waits for a signal (it is not completed).</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I have another application that loads knowledge session from database (by using ID that was provided upon knowledge session generation), and that spawns a signal:</p><p>{code}</p><p>ksession.signalEvent("Signal", null);</p><p>{code}</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>When signal is sent, it effectively runs all process instances into completion, and that is OK.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>But when I have for example more stateful sessions persisted, and each has its own set of processes, calling {code}ksession.signalEvent("Signal", null);{code} runs processes from all sessions into completion, not only the processes that belong to that particular session.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Another thing I've spotted: when I load knowledge session from database, method {code}ksession.getProcessInstances(){code} returns empty list.</p><p>That is weird because at the same time method {code}ksession.getProcessInstance(1){code} correctly loads process instance from database.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Thanks,</p><p>Miljenko</p></div>
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<p style="margin: 0;">Reply to this message by <a href="http://community.jboss.org/message/626390#626390">going to Community</a></p>
<p style="margin: 0;">Start a new discussion in jBPM at <a href="http://community.jboss.org/choose-container!input.jspa?contentType=1&containerType=14&container=2034">Community</a></p>
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