[rules-users] Drools Human Task Service Persistence
Rui Tang
tangrui at zyeeda.com
Thu May 12 21:57:44 EDT 2011
Drools Persistence JPA module must use JTA instead of local transaction.
<persistence-unit name="org.drools.persistence.jpa"
transaction-type="RESOURCE_LOCAL">
should change to
<persistence-unit name="default" transaction-type="JTA">
and
env.set( EnvironmentName.TRANSACTION_MANAGER, XXXXXXXXXXX );
your transaction manager should be get from JNDI like
UserTransaction utx = (UserTransaction)
ctx.lookup("java:comp/UserTransaction");
Your JBoss transaction manager component should register the UserTransaction
into that JNDO name. (In some JTA implementations the UserTransaction and
TransactionManager have the same interfaces). And to make Drools Persistence
JPA works, you should put 4 or 5 objects into env, they are:
env.set(EnvironmentName.ENTITY_MANAGER_FACTORY,
this.defaultPersistenceSvc.getSessionFactory());
env.set(EnvironmentName.APP_SCOPED_ENTITY_MANAGER,
this.defaultPersistenceSvc.getCurrentSession()); // If you don't handle the
EntityManager your self, you can omit this line.
env.set(EnvironmentName.TRANSACTION_MANAGER,
this.txSvc.getTransactionManager()); // java:comp/env/TransactionManager
env.set(EnvironmentName.TRANSACTION, this.txSvc.getTransaction()); //
java:comp/UserTransaction
env.set(EnvironmentName.TRANSACTION_SYNCHRONIZATION_REGISTRY,
this.txSvc.getTransactionSynchronizationRegistry()); //
java:comp/env/TransactionSynchronizationRegistry
all the methods called from txSvc fetch objects from according JNDI. In my
application all these JNDI objects are config-ed via Tomcat like this (in
META-INF/context.xml):
<Resource name="jdbc/defaultDS" auth="Container"
type="javax.sql.XADataSource"
factory="bitronix.tm.resource.ResourceObjectFactory"
uniqueName="jdbc/defaultDS" />
<Resource name="jdbc/droolsTaskDS" auth="Container"
type="javax.sql.XADataSource"
factory="bitronix.tm.resource.ResourceObjectFactory"
uniqueName="jdbc/droolsTaskDS" />
<Resource name="TransactionManager" auth="Container"
type="javax.transaction.TransactionManager"
factory="bitronix.tm.BitronixTransactionManagerObjectFactory" />
<Resource name="TransactionSynchronizationRegistry" auth="Container"
type="javax.transaction.TransactionSynchronizationRegistry"
factory="bitronix.tm.BitronixTransactionSynchronizationRegistryObjectFactory"
/>
<Resource name="UserTransaction" auth="Container"
type="javax.transaction.UserTransaction" />
<Transaction factory="bitronix.tm.BitronixUserTransactionObjectFactory"
/>
On Thu, May 12, 2011 at 11:25 PM, loumimi <moundir.jamal-ext at sgcib.com>wrote:
> Hello Ram,
>
> I'm running a simple J2SE application (a hello world), I'm trying to
> persist
> a simple drools workflow into Oracle DB.
> Here's my configuration :
> Oracle 10.2.0.4.0
> drools-decisiontables-5.0.1.jar
> hibernate-core-3.3.0.SP1.jar
> ...
>
> persistence.xml :
> <?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/persistence_1_0.xsd
> http://java.sun.com/xml/ns/persistence/orm
> http://java.sun.com/xml/ns/persistence/orm_1_0.xsd"
> xmlns:orm="http://java.sun.com/xml/ns/persistence/orm"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xmlns="http://java.sun.com/xml/ns/persistence">
>
>
> <persistence-unit name="org.drools.persistence.jpa"
> transaction-type="RESOURCE_LOCAL">
> <provider>org.hibernate.ejb.HibernatePersistence</provider>
> <class>org.drools.persistence.session.SessionInfo</class>
>
> <class>org.drools.persistence.processinstance.ProcessInstanceInfo</class>
>
>
> <class>org.drools.persistence.processinstance.ProcessInstanceEventInfo</class>
> <class>org.drools.persistence.processinstance.WorkItemInfo</class>
>
> <properties>
> <property name="hibernate.dialect"
> value="org.hibernate.dialect.Oracle10gDialect"/>
> <property name="hibernate.connection.driver_class"
> value="oracle.jdbc.OracleDriver"/>
> <property name="hibernate.connection.url"
> value="jdbc:oracle:thin:@gfxdevdb01.fr.world.xxxx:1567:CCOD02"/>
> <property name="hibernate.connection.username" value="xxxx"/>
> <property name="hibernate.connection.password" value="xxxx"/>
> <property name="hibernate.connection.autocommit" value="true" />
> <property name="hibernate.max_fetch_depth" value="3"/>
> <property name="hibernate.hbm2ddl.auto" value="update" />
> <property name="hibernate.show_sql" value="true" />
> <property name="hibernate.transaction.manager_lookup_class"
> value="org.hibernate.transaction.JBossTransactionManagerLookup" />
> </properties>
> </persistence-unit>
> </persistence>
>
>
> ----
> orm.xml :
> <?xml version="1.0" encoding="UTF-8"?>
> <entity-mappings xmlns="http://java.sun.com/xml/ns/persistence/orm"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>
> xsi:schemaLocation="http://java.sun.com/xml/ns/persistence/ormorm_1_0.xsd"
> version="1.0">
> <named-query name="ProcessInstancesWaitingForEvent">
> <query>
> select
> processInstanceInfo.processInstanceId
> from
> ProcessInstanceInfo processInstanceInfo
> where
> :type in elements(processInstanceInfo.eventTypes)
> </query>
> </named-query>
> </entity-mappings>
>
>
> ---
> the code :
> public static final void main(String[] args) {
> try {
>
> KnowledgeBuilder kbuilder =
> KnowledgeBuilderFactory.newKnowledgeBuilder();
>
> kbuilder.add(ResourceFactory.newClassPathResource("ruleflow.rf"),
> ResourceType.DRF);
> KnowledgeBuilderErrors errors = kbuilder.getErrors();
> if (errors.size() > 0) {
> for (KnowledgeBuilderError error: errors) {
> System.err.println(error);
> }
> throw new IllegalArgumentException("Could not parse
> knowledge.");
> }
> KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
> kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
>
> // create the entity manager factory and register it in the
> environment
> EntityManagerFactory emf =
> Persistence.createEntityManagerFactory(
> "org.drools.persistence.jpa" );
> Environment env = KnowledgeBaseFactory.newEnvironment();
> env.set( EnvironmentName.ENTITY_MANAGER_FACTORY, emf );
> // env.set( EnvironmentName.TRANSACTION_MANAGER,
> XXXXXXXXXXX );
> // create a new knowledge session that uses JPA to store
> the runtime
> state
> StatefulKnowledgeSession ksession =
> JPAKnowledgeService.newStatefulKnowledgeSession( kbase, null, env );
>
> // invoke methods on your method here
> ksession.startProcess( "com.sample.ruleflow" );
> ksession.fireAllRules();
> ksession.dispose();
>
> } catch (Throwable t) {
> t.printStackTrace();
> }
> }
>
>
> I don't know If I miss something
>
> --
> View this message in context:
> http://drools.46999.n3.nabble.com/Drools-Human-Task-Service-Persistence-tp1868778p2932251.html
> Sent from the Drools: User forum mailing list archive at Nabble.com.
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
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>
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