[rules-users] Process Persistence (JPA) and the WSHumanTaskHandler

[SBalakrishnan]

Pasted is the code to enabling persistence .Was using the Order Sample .

Appreciate your help.


Thanks
Sanjay

/*----------------------------------------------*/

	private void createWorkingMemoryTest() {
		try {
			
			PoolingDataSource ds = new PoolingDataSource();
			ds.setUniqueName("jdbc/testDS1");
			ds.setClassName("org.h2.jdbcx.JdbcDataSource");
			ds.setMaxPoolSize(3);
			ds.setAllowLocalTransactions(true);
			ds.getDriverProperties().put("user", "sa");
			ds.getDriverProperties().put("password", "sasa");
			ds.getDriverProperties().put("URL",
"jdbc:h2:file:/dev/CaseNoteBookRewirite/data/process-instance-db");
			
			ds.init();
			
			//new
			EntityManagerFactory emf =
			    Persistence.createEntityManagerFactory( "org.drools.persistence.jpa"
);
			Environment env = KnowledgeBaseFactory.newEnvironment();
			env.set( EnvironmentName.ENTITY_MANAGER_FACTORY, emf );
			
			kbase = createKnowledgeBase();
			
			try {
				ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(
					33, kbase, null, env);
				System.out.println("Loading session data ...");
			} catch (RuntimeException e) {
					ksession = JPAKnowledgeService.newStatefulKnowledgeSession(
						kbase, null, env);
					System.out.println("Creating new session data ...");
			}
			
			int sessionId = ksession.getId();
			

			WorkingMemoryDbLogger JPAlogger = new WorkingMemoryDbLogger(ksession);
			
			CustomerService customerService = new DefaultCustomerService();
			Customer c = new Customer("A-12345");
			Calendar birthday = Calendar.getInstance();
			birthday.set(1982, 1, 1);
			c.setBirthday(birthday.getTime());
			c.setFirstName("John");
			c.setLastName("Doe");
			customerService.addCustomer(c);
			ksession.setGlobal("customerService", customerService);
			
			ItemCatalog itemCatalog = new DefaultItemCatalog();
			Item i = new Item("I-9876");
			i.setName("PC game");
			i.setMinimalAge(18);
			itemCatalog.addItem(i);
			i = new Item("I-5432");
			i.setName("Laptop");
			itemCatalog.addItem(i);
			ksession.setGlobal("itemCatalog", itemCatalog);
			
			/*WS Human Task Handler*/
			WSHumanTaskHandler handler = new WSHumanTaskHandler();
			ksession.getWorkItemManager().registerWorkItemHandler("Human Task",
handler);
			

			//sanjay
		} catch (Throwable t) {
			t.printStackTrace();
		}
	}

/*----------------------------------------------*/




Mauricio Salatino wrote:
> 
> Can you paste the code used to "enabling the JPA persistence"?
> 
> On Sun, Aug 9, 2009 at 4:35 PM, SBalakrishnan
> <Sanjay.Balakrishnan at fnis.com>wrote:
> 
>>
>> Hi,
>>
>> I am new to drools flow and have the question below.
>>
>> After enabling persisentence (JPA) on the process side and
>> using the out of the box WSHumanTaskHandler.
>>
>> Ran into a java.lang.NullPointerException on completing
>> the Human Task (used the Eclipse Human Task view to do it)
>>
>> [2009:08:221 14:08:765:exception] Uncaught exception on client
>> java.lang.NullPointerException
>>        at
>>
>> org.drools.persistence.processinstance.JPAWorkItemManager.completeWorkItem(JPAWorkItemManager.java:83)
>>        at
>>
>> org.drools.process.workitem.wsht.WSHumanTaskHandler$GetCompletedTaskResponseHandler.execute(WSHumanTaskHandler.java:282)
>>        at
>>
>> org.drools.task.service.TaskClientHandler.messageReceived(TaskClientHandler.java:67)
>>        at
>>
>> org.apache.mina.core.filterchain.DefaultIoFilterChain$TailFilter.messageReceived(DefaultIoFilterChain.java:752)
>>        at
>>
>> org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:414)
>>        at
>>
>> org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:49)
>>        at
>>
>> org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:832)
>>        at
>>
>> org.apache.mina.filter.codec.ProtocolCodecFilter$ProtocolDecoderOutputImpl.flush(ProtocolCodecFilter.java:379)
>>        at
>>
>> org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:173)
>>        at
>>
>> org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:414)
>>        at
>>
>> org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:49)
>>        at
>>
>> org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:832)
>>        at
>>
>> org.apache.mina.core.filterchain.DefaultIoFilterChain$HeadFilter.messageReceived(DefaultIoFilterChain.java:616)
>>        at
>>
>> org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:414)
>>        at
>>
>> org.apache.mina.core.filterchain.DefaultIoFilterChain.fireMessageReceived(DefaultIoFilterChain.java:408)
>>        at
>>
>> org.apache.mina.core.polling.AbstractPollingIoProcessor.read(AbstractPollingIoProcessor.java:578)
>>        at
>>
>> org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:540)
>>        at
>>
>> org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:532)
>>        at
>>
>> org.apache.mina.core.polling.AbstractPollingIoProcessor.access$400(AbstractPollingIoProcessor.java:58)
>>        at
>>
>> org.apache.mina.core.polling.AbstractPollingIoProcessor$Worker.run(AbstractPollingIoProcessor.java:857)
>>        at
>>
>> org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:51)
>>        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown
>> Source)
>>        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown
>> Source)
>>        at java.lang.Thread.run(Unknown Source)
>>
>>
>>
>> Am I missing something or does the WSHumanTaskHander not support
>> the above ?
>>
>>
>> Note:-
>> Was able to get these pieces working when  process was
>> not using JPA persistence.
>>
>> Thanks
>> Sanjay
>> --
>> View this message in context:
>> http://www.nabble.com/Process-Persistence-%28JPA%29-and-the-WSHumanTaskHandler-tp24890353p24890353.html
>> Sent from the drools - user mailing list archive at Nabble.com.
>>
>> _______________________________________________
>> rules-users mailing list
>> rules-users at lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
> 
> 
> 
> -- 
> - http://salaboy.wordpress.com
> - http://www.jbug.com.ar
> - Salatino "Salaboy" Mauricio -
> 
> _______________________________________________
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> 

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