[jboss-user] [jBPM] - Re: Configuring JBPM 5 with other databases

[krishnendu kunti]

krishnendu kunti [http://community.jboss.org/people/kkunti] created the discussion

"Re: Configuring JBPM 5 with other databases"

To view the discussion, visit: http://community.jboss.org/message/578166#578166

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Hi

Further on this thread... (running from eclipse) I am getting the following stacktrace..


java.lang.IllegalStateException: java.lang.reflect.InvocationTargetException
....

Caused by: java.lang.reflect.InvocationTargetException
...
Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: Unable to load class: org.drools.persistence.processinstance.JPAProcessInstanceManagerFactory

...
by: java.lang.ClassNotFoundException: Unable to load class: org.drools.persistence.processinstance.JPAProcessInstanceManagerFactory

on bit of an investigation looks like these classes are available in drools-xx--5.1.1 but not there in drools-xx--5.2.0.. all the same on e cant' work with drools-xx5.1.1 as  some of the methods are missing which are required for creation of knowledge session.


Including my persistence.xml and java runner class... please have a look....

It will be a big help if someone can share some tips/code... to show it works..

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package com.sw.test;

import java.util.HashMap;
import java.util.Map;

import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;

import org.drools.KnowledgeBase;
import org.drools.KnowledgeBaseFactory;
import org.drools.builder.KnowledgeBuilder;
import org.drools.builder.KnowledgeBuilderFactory;
import org.drools.builder.ResourceType;
import org.drools.compiler.BPMN2ProcessFactory;
import org.drools.compiler.ProcessBuilderFactory;
import org.drools.io.ResourceFactory;
import org.drools.logger.KnowledgeRuntimeLogger;
import org.drools.logger.KnowledgeRuntimeLoggerFactory;
import org.drools.marshalling.impl.ProcessMarshallerFactory;
import org.drools.persistence.jpa.JPAKnowledgeService;
import org.drools.runtime.Environment;
import org.drools.runtime.EnvironmentName;
import org.drools.runtime.StatefulKnowledgeSession;
import org.drools.runtime.process.ProcessRuntimeFactory;
import org.jbpm.bpmn2.BPMN2ProcessProviderImpl;
import org.jbpm.marshalling.impl.ProcessMarshallerFactoryServiceImpl;
import org.jbpm.process.builder.ProcessBuilderFactoryServiceImpl;
import org.jbpm.process.instance.ProcessRuntimeFactoryServiceImpl;
import org.jbpm.process.workitem.wsht.WSHumanTaskHandler;

public class MyProcesstest {

    /**
     * @param args
     */
    public static void main(String[] args) {

        try {
            KnowledgeBase kbase = readKnowledgeBase();
        
        EntityManagerFactory emf =
            Persistence.createEntityManagerFactory( "org.jbpm.persistence.my" );
            Environment env = KnowledgeBaseFactory.newEnvironment();
            env.set( EnvironmentName.ENTITY_MANAGER_FACTORY, emf );
            // create a new knowledge session that uses JPA to store the runtime state
        
            
                StatefulKnowledgeSession ksession =
                    JPAKnowledgeService.newStatefulKnowledgeSession( kbase, null, env );
                    int sessionId = ksession.getId();
                    
            
                    KnowledgeRuntimeLogger logger = KnowledgeRuntimeLoggerFactory.newThreadedFileLogger(ksession, "test", 1000);
                    ksession.getWorkItemManager().registerWorkItemHandler("Human Task", new WSHumanTaskHandler());
                    // start a new process instance
                    Map<String, Object> params = new HashMap<String, Object>();
                    params.put("employee", "krisv");
                    ksession.startProcess("com.sample.evaluation", params);
            
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }
    
    private static KnowledgeBase readKnowledgeBase() throws Exception {
        ProcessBuilderFactory.setProcessBuilderFactoryService(new ProcessBuilderFactoryServiceImpl());
        ProcessMarshallerFactory.setProcessMarshallerFactoryService(new ProcessMarshallerFactoryServiceImpl());
        ProcessRuntimeFactory.setProcessRuntimeFactoryService(new ProcessRuntimeFactoryServiceImpl());
        BPMN2ProcessFactory.setBPMN2ProcessProvider(new BPMN2ProcessProviderImpl());
        KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
        kbuilder.add(ResourceFactory.newClassPathResource("Evaluation.bpmn"), ResourceType.BPMN2);
        return kbuilder.newKnowledgeBase();
    }
}
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<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<persistence version="1.0" 
             xsi:schemaLocation=" http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence
                                  http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd
                                  http://java.sun.com/xml/ns/persistence/orm http://java.sun.com/xml/ns/persistence/orm  http://java.sun.com/xml/ns/persistence/orm_1_0.xsd http://java.sun.com/xml/ns/persistence/orm_1_0.xsd"
             xmlns:orm=" http://java.sun.com/xml/ns/persistence/orm http://java.sun.com/xml/ns/persistence/orm"
             xmlns:xsi=" http://www.w3.org/2001/XMLSchema-instance http://www.w3.org/2001/XMLSchema-instance"
             xmlns=" http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence">
  <persistence-unit name="org.jbpm.persistence.my">
      <provider>org.hibernate.ejb.HibernatePersistence</provider>

<class>org.drools.persistence.session.SessionInfo</class>
<class>org.jbpm.persistence.processinstance.ProcessInstanceInfo</class>
<class>org.jbpm.persistence.processinstance.ProcessInstanceEventInfo</class>
    
    <properties>
      <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
      <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/>
      <property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/jbpmdb" />
      <property name="hibernate.connection.username" value="root"/>
      <property name="hibernate.connection.password" value="admin"/>
      <property name="hibernate.connection.autocommit" value="false" />
      <property name="hibernate.max_fetch_depth" value="3"/>
      <property name="hibernate.hbm2ddl.auto" value="create" />
      <property name="hibernate.show_sql" value="false" />
    </properties>
  </persistence-unit>
</persistence>
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