0 Replies Latest reply on Aug 8, 2009 3:52 PM by shanthi_jira

JBPM in SEAMGen generated CRUD Application

shanthi_jira Aug 8, 2009 3:52 PM

Hi ,

I am using Seam 2.1.1 GA and Jbossepp 4.3.I have created the Seam application.
I have used the Seam-gen reverse engineering to create the crud application
I have configured the JBPM.I am able to create the process successfully and
business process variables are able to reteive form the taskInstance.But when
I try to start the task using @StartTask annotation i am not able to start the task.

I am geting the following exception
*emphasis*
Exception during request processing:
Caused by javax.el.ELException with message: "java.lang.IllegalStateException: begin
method invoked from a long-running conversation, try using @Begin(join=true) on method: approve"
org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:333)
org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:342)
org.jboss.el.parser.AstPropertySuffix.invoke(AstPropertySuffix.java:58)
org.jboss.el.parser.AstValue.invoke(AstValue.java:96)
org.jboss.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276)
org.jboss.seam.core.Expressions$2.invoke(Expressions.java:175)
org.jboss.seam.navigation.Pages.callAction(Pages.java:708)
org.jboss.seam.navigation.Pages.preRender(Pages.java:346)
org.jboss.seam.jsf.SeamPhaseListener.preRenderPage(SeamPhaseListener.java:562)
org.jboss.seam.jsf.SeamPhaseListener.beforeRenderResponse(SeamPhaseListener.java:473)
org.jboss.seam.jsf.SeamPhaseListener.beforeServletPhase(SeamPhaseListener.java:146)
org.jboss.seam.jsf.SeamPhaseListener.beforePhase(SeamPhaseListener.java:116)
*emphasis*,

Even if i give use @Begin(join=true) also i am getting the exception when i use @starttask or
@BeginTask.Once i restart the server all my business context variables are also lost.

Please help me to solve this problem.

 My Configuration files

 process jpdl file 

<process-definition
 name="Partner Approval">

 <start-state name="register" end-tasks="true">
 <transition to="confirmregistration"/>
 </start-state>

 <task-node name="confirmregistration" >
 <task name="confirmregistration" description="svc registration confirmation">
 <assignment pooled-actors="admin"/>
 </task>
 <transition name="approve" to="approved">

 </transition>
 <transition name="reject" to="rejected"/>
 </task-node>

 <end-state name="approved"/>
 <end-state name="rejected"/>

</process-definition>

 pageflow.jpdl.cml

<?xml version="1.0"?>

<pageflow-definition
 xmlns="http://jboss.com/products/seam/pageflow"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation=
 "http://jboss.com/products/seam/pageflow http://jboss.com/products/seam/pageflow-1.2.xsd"
 name="partnerapproval">
 <start-state name="start">
 <transition to="pendingtask"/>
 </start-state>

 <page name="pendingtask" view-id="/PartnerEdit1.xhtml"
 >
 <redirect/>
 <transition name="cancel" to="cancel"/>
 <transition name="register" to="register">
 <action expression="#{partnerHome.registerPartner}" />
 </transition>
 </page>

 <page name="cancel" view-id="/PartnerEdit.xhtml">
 <redirect/>
 <end-conversation/>
 </page>

 <page name="register" view-id="/registrationSuccess.xhtml">
 <redirect/>
 <end-conversation before-redirect="true"/>
 </page>

</pageflow-definition>

 hibernet.cfg.xml 

<?xml version='1.0' encoding='utf-8'?>

<!DOCTYPE hibernate-configuration PUBLIC
 "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
 "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
 <session-factory>

 <property name="show_sql">false</property>
 <property name="connection.datasource">java:/prmportalDatasource</property>
 <property name="transaction.factory_class">org.hibernate.transaction.JTATransactionFactory</property>
 <property name="transaction.manager_lookup_class">org.hibernate.transaction.JBossTransactionManagerLookup</property>
 <property name="cache.provider_class">org.hibernate.cache.HashtableCacheProvider</property>
 <property name="hbm2ddl.auto">create-drop</property>
 

.......
,,,,,
......

 </session-factory>
</hibernate-configuration>

persistence.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"
 version="1.0">
 <persistence-unit name="prmportalDatabase">
 <provider>org.hibernate.ejb.HibernatePersistence</provider>
 <jta-data-source>java:/prmportalDatasource</jta-data-source>
 <properties>
 <property name="hibernate.hbm2ddl.auto" value="create-drop"/>
 <property name="hibernate.cache.use_query_cache" value="true"/>
 <property name="hibernate.show_sql" value="true"/>
 <property name="hibernate.cache.provider_class"
 value="org.hibernate.cache.HashtableCacheProvider"/>
 <property name="jboss.entity.manager.factory.jndi.name"
 value="java:/prmportalEntityManagerFactory" />
 </properties>
 </persistence-unit>
</persistence>

jboss-beans.xml

<?xml version="1.0" encoding="UTF-8"?>

<deployment xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="urn:jboss:bean-deployer bean-deployer_1_0.xsd"
 xmlns="urn:jboss:bean-deployer:2.0">
 <bean name="prmportalDatasourceBootstrap" class="org.jboss.resource.adapter.jdbc.local.LocalTxDataSource">
 <property name="driverClass">org.hsqldb.jdbcDriver</property>
 <property name="connectionURL">jdbc:hsqldb:.</property>
 <property name="userName">sa</property>
 <property name="jndiName">java:/prmportalDatasource</property>
 <property name="minSize">0</property>
 <property name="maxSize">10</property>
 <property name="blockingTimeout">1000</property>
 <property name="idleTimeout">100000</property>
 <property name="transactionManager"><inject bean="TransactionManager"/></property>
 <property name="cachedConnectionManager"><inject bean="CachedConnectionManager"/></property>
 <property name="initialContextProperties"><inject bean="InitialContextProperties"/></property>
 </bean>
 <bean name="prmportalDatasource" class="java.lang.Object">
 <constructor factoryMethod="getDatasource">
 <factory bean="prmportalDatasourceBootstrap"/>
 </constructor>
 </bean>
</deployment>

jbpm.cfg.xml

<jbpm-configuration>
<jbpm-context>
 <service name="persistence">
 <factory>
 <bean class="org.jbpm.persistence.db.DbPersistenceServiceFactory">
 <field name="isTransactionEnabled"><false/></field>
 </bean>
 </factory>
 </service>
 <service name="message" factory="org.jbpm.msg.db.DbMessageServiceFactory" />
 <service name="scheduler" factory="org.jbpm.scheduler.db.DbSchedulerServiceFactory" />
 <service name="tx" factory="org.jbpm.tx.TxServiceFactory" />
 <service name="logging" factory="org.jbpm.logging.db.DbLoggingServiceFactory" />
 <service name="authentication" factory="org.jbpm.security.authentication.DefaultAuthenticationServiceFactory" />
</jbpm-context>

</jbpm-configuration>

Java files

Entity bean

package org.domain.prmportal.entity;

// Generated Jul 27, 2009 4:52:34 PM by Hibernate Tools 3.2.4.GA

import java.util.Date;
import java.util.HashSet;
import java.util.Set;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.OneToMany;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import org.hibernate.validator.Length;
import org.hibernate.validator.NotNull;
import org.jboss.seam.ScopeType;
import org.jboss.seam.annotations.Out;

/**
* Partner generated by hbm2java
*/
@Entity
@Table(name = "PARTNER", schema = "PRMDB")
public class Partner implements java.io.Serializable {

 @Out(scope=ScopeType.BUSINESS_PROCESS,required=false)
 private String username;

 @Out(scope=ScopeType.BUSINESS_PROCESS,required=false)
 private String firstname;



 @Out(scope=ScopeType.BUSINESS_PROCESS,required=false)
 private String bankaddress;

 @Out(scope=ScopeType.BUSINESS_PROCESS,required=false)
 private String bankaddress2;

 @Out(scope=ScopeType.BUSINESS_PROCESS,required=false)
 private String companyiban;


 public Partner() {
 }

 public Partner(String username) {
 this.username = username;
 }

 @Id
 @Column(name = "USERNAME", unique = true, nullable = false, length = 40)
 @NotNull
 @Length(max = 40)
 public String getUsername() {
 return this.username;
 }

 public void setUsername(String username) {
 this.username = username;
 }

 @Column(name = "FIRSTNAME", length = 40)
 @Length(max = 40)
 public String getFirstname() {
 return this.firstname;
 }

 public void setFirstname(String firstname) {
 this.firstname = firstname;
 }


}

 Implementation class

@Name("partneresb")
public class PartnerESBAction implements Serializable{

 @Out(scope=ScopeType.BUSINESS_PROCESS,required=false)
 String username;
 @Out(scope=ScopeType.BUSINESS_PROCESS,required=false)
 String firstname;



 @BeginTask
 public void approve(){
 System.out.println("Inside Approve");
 // persist();
 System.out.println("persist done");
 }



 @EndTask
 public void reject(){

 System.out.println("Inside reject");

 }

}

Session bean genarated by Seam-gen

@Name("partnerHome")
public class PartnerHome extends EntityHome<Partner> {

 /**
 *
 */
 private static final long serialVersionUID = 1L;



 public void setPartnerUsername(String id) {
 setId(id);
 }

 public String getPartnerUsername() {
 return (String) getId();
 }


 @Override
 protected Partner createInstance() {
 Partner partner = new Partner();
 return partner;
 }

 public void wire() {
 getInstance();

 }

 public boolean isWired() {
 return true;
 }

 public Partner getDefinedInstance() {
 return isIdDefined() ? getInstance() : null;
 }



 @Out(scope=ScopeType.BUSINESS_PROCESS,required=false)
 String username;
 @Out(scope=ScopeType.BUSINESS_PROCESS,required=false)
 String firstname;

 @Begin(nested=true, pageflow="partnerapproval")
 public void begin(){
 System.out.println("inside begin");
 }
 @End
 @CreateProcess(definition="Partner Approval")
 public void registerPartner(){
 Partner partner=getInstance();
 //assignValues(partner);
 System.out.println(" UserName "+partner.getUsername());
 username=partner.getUsername();
 firstname=partner.getFirstname();
 }


}

Is it possible to use JBPM in seam gen application? if i try to make the seam componenet
as stateful by using the annotation @stateful annotation,i am getting teh exception as
not able to start the seam component error.Please help me..