[rules-users] streams and equality assertion behavior

[Premkumar Stephen]

Hello all,

Could this unfixed JIRA https://jira.jboss.org/jira/browse/GUVNOR-354 be
related to this?

I am inserting a single object via JSON and it fires twice.

Regards,
Prem


On Wed, Jul 1, 2009 at 9:54 AM, Jaroslaw Kijanowski <kijanowski at gmail.com>wrote:

> https://jira.jboss.org/jira/browse/JBRULES-2154
>
> Thanks.
>
> Edson Tirelli wrote:
>
>>
>>     Jarowslaw,
>>
>>     Could you please open a JIRA for this. I need to investigate.
>>     Thanks,
>>
>>     Edson
>>
>> 2009/7/1 Jaroslaw Kijanowski <kijanowski at gmail.com <mailto:
>> kijanowski at gmail.com>>
>>
>>
>>    Hi,
>>     I've configured my knowledge base to use the EQUALITY assertion
>>    behaviour.
>>    When I insert two equal facts into the session, only one gets
>>    processed (objects and their fact handles are equal).
>>    However when I insert two equal facts via streams, my rule fires
>>    twice (objects are equal, but their fact handles are not). Isn't
>>    equality assertion behaviour supported when using streams?
>>
>>    Here's my rule and test class:
>>
>>    package com.sample
>>    import com.sample.Message;
>>    declare Message
>>     @role( event )
>>     @timestamp( time )
>>    end
>>
>>    rule "r"
>>    when
>>     Message( $i:i) //from entry-point "myStream"
>>    then
>>     System.out.println( $i );
>>    end
>>
>>    +++++++++++++++++++++++++++++++++++++++++
>>
>>    public class Message {
>>
>>           private int i;
>>           private Date time;
>>    //getters, setters, hashcode, equals, constructor
>>    }
>>
>>    +++++++++++++++++++++++++++++++++++++++++
>>
>>    public class DroolsTest {
>>     public static final void main(String[] args) {
>>       try {
>>         KnowledgeBase kbase = readKnowledgeBase();
>>         StatefulKnowledgeSession ksession =
>>    kbase.newStatefulKnowledgeSession();
>>
>>         //WorkingMemoryEntryPoint stream =
>>    ksession.getWorkingMemoryEntryPoint("myStream");
>>
>>         Date d = new Date();
>>         Message message1 = new Message(1,d);
>>         FactHandle fh1 = ksession.insert(message1);
>>         //FactHandle fh1 = stream.insert(message1);
>>         Message message2 = new Message(1,d);
>>         FactHandle fh2 = ksession.insert(message2);
>>         //FactHandle fh2 = stream.insert(message2);
>>
>>         if (message1.equals(message2) && fh1.equals(fh2)){
>>           System.out.println("equal");
>>         }
>>         ksession.fireAllRules();
>>       } catch (Throwable t) {
>>         t.printStackTrace();
>>       }
>>     }
>>
>>     private static KnowledgeBase readKnowledgeBase() throws Exception {
>>       KnowledgeBuilder kbuilder =
>>    KnowledgeBuilderFactory.newKnowledgeBuilder();
>>       kbuilder.add(ResourceFactory.newClassPathResource("Sample.drl"),
>>    ResourceType.DRL);
>>       if (kbuilder.getErrors().size() > 0) {
>>         throw new IllegalArgumentException("Could not parse knowledge.");
>>       }
>>       KnowledgeBaseConfiguration kbaseConfig =
>>    KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
>>       kbaseConfig.setOption(AssertBehaviorOption.EQUALITY);
>>       kbaseConfig.setOption(EventProcessingOption.STREAM);
>>       kbaseConfig.setOption(RemoveIdentitiesOption.YES);
>>
>>       KnowledgeBase kbase =
>>    KnowledgeBaseFactory.newKnowledgeBase(kbaseConfig);
>>       kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
>>       return kbase;
>>     }
>>    }
>>
>>    +++++++++++++++++++++++++++++++++++++++++
>>
>>    Thanks,
>>     Jarek
>>    _______________________________________________
>>    rules-users mailing list
>>    rules-users at lists.jboss.org <mailto:rules-users at lists.jboss.org>
>>    https://lists.jboss.org/mailman/listinfo/rules-users
>>
>>
>>
>>
>> --
>>  Edson Tirelli
>>  JBoss Drools Core Development
>>  JBoss by Red Hat @ www.jboss.com <http://www.jboss.com>
>>
>>
>> ------------------------------------------------------------------------
>>
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