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Re: JBPM's persistence reusing existing connection
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created by <a href="http://community.jboss.org/people/arorapo">Pooja Arora</a> in <i>jBPM</i> - <a href="http://community.jboss.org/message/644326#644326">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 am trying to integrate JBPM5(5.1.0.Final) with Sybase.</p><p>so, I have picked persistence.xml  and copied it in meta-inf directory of my application. now when I try to run below code.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>            EntityManagerFactory emf = Persistence.createEntityManagerFactory("org.jbpm.persistence.jpa" );</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>            ksession = JPAKnowledgeService.newStatefulKnowledgeSession(kbase, null, env);</p><p>I got mentioned exception while creating ksession</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><strong>Caused by: java.lang.NullPointerException</strong></p><p><strong>    at org.drools.persistence.SingleSessionCommandService.<init>(SingleSessionCommandService.java:138)</strong></p><p>It comes up at below line in SingleSessionCommandService.java</p><p> <strong>((InternalKnowledgeRuntime) ksession).setId( this.sessionInfo.getId() );</strong></p><p>as <strong>this.sessionInfo.getId()</strong> is returning <strong>null</strong>.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>My persistence.xml has below contents</p><p>---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------</p><p><?xml version="1.0" encoding="UTF-8" standalone="yes"?></p><p><persistence version="1.0"</p><p><span>    xsi:schemaLocation="</span><a class="jive-link-external-small" href="http://java.sun.com/xml/ns/persistence" target="_blank">http://java.sun.com/xml/ns/persistence</a></p><p><span>                                 </span><a class="jive-link-external-small" href="http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" target="_blank">http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd</a></p><p><span>                                 </span><a class="jive-link-external-small" href="http://java.sun.com/xml/ns/persistence/orm" target="_blank">http://java.sun.com/xml/ns/persistence/orm</a><span> </span></p><p><span>                                 </span><a class="jive-link-external-small" href="http://java.sun.com/xml/ns/persistence/orm_1_0.xsd" target="_blank">http://java.sun.com/xml/ns/persistence/orm_1_0.xsd</a><span>"</span></p><p><span>    xmlns:orm="</span><a class="jive-link-external-small" href="http://java.sun.com/xml/ns/persistence/orm" target="_blank">http://java.sun.com/xml/ns/persistence/orm</a><span>" xmlns:xsi="</span><a class="jive-link-external-small" href="http://www.w3.org/2001/XMLSchema-instance" target="_blank">http://www.w3.org/2001/XMLSchema-instance</a><span>"</span></p><p><span>    xmlns="</span><a class="jive-link-external-small" href="http://java.sun.com/xml/ns/persistence" target="_blank">http://java.sun.com/xml/ns/persistence</a><span>"></span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>    <persistence-unit name="org.jbpm.persistence.jpa" transaction-type="RESOURCE_LOCAL"></p><p>        <provider>org.hibernate.ejb.HibernatePersistence</provider></p><p>        <!--<jta-data-source>java:/jdbc/testDS1</jta-data-source> mapping-file>META-INF/JBPMorm.xml</mapping-file --></p><p>        <class>org.jbpm.persistence.processinstance.ProcessInstanceInfo</class></p><p>        <class>org.drools.persistence.info.SessionInfo</class></p><p>        <class>org.drools.persistence.info.WorkItemInfo</class></p><p>        <properties></p><p>            <property name="connection.driver_class" value="com.sybase.jdbc2.jdbc.SybDriver" /></p><p>            <property name="connection.url" value="<sybase.url>" /></p><p>            <property name="hibernate.dialect" value="org.hibernate.dialect.SybaseDialect" /></p><p>            <property name="connection.username" value="<username>" /></p><p>            <property name="connection.password" value="<password>" /></p><p>            <property name="hibernate.max_fetch_depth" value="3" /></p><p>            <property name="hibernate.hbm2ddl.auto" value="create" /></p><p>            <property name="hibernate.show_sql" value="true" /></p><p>        </properties></p><p>    </persistence-unit></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p></persistence></p><p>---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Please let me know if I am heading in right direction and your suggestions on the same.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Cheers</p><p>Pooja</p></div>
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