[rules-users] To access at the fact object

[Wolfgang Laun]

For modifying a fact object you have in Working Memory, check out
the documentation on "modify" in the Expert manual's section on
"The Right Hand Side (then)"

-W


On 04/12/2012, Mister Nono <noel.maurice at univ-jfc.fr> wrote:
> Hi,
>
> I have the drools rule (made in guvnor server) :
>
>
> 1.	|	rule "driverRule"
> 2.	|	    salience 10
> 3.	|	    dialect "mvel"
> 4.	|	    when
> 5.	|	        Driver( driverAge : age > 18 && < 65 )
> 6.	|	    then
> 7.	|	        Driver fact0 = new Driver();
> 8.	|	        fact0.setName( "TOTO" );
> 9.	|	        insert( fact0 );
> 10.	|	end
>
>
> ... and the java code source :
>
>
> KnowledgeAgent agent =
> KnowledgeAgentFactory.newKnowledgeAgent("/Guvnor.properties");
> KnowledgeBase ruleBase = agent.getKnowledgeBase();
> 		
> StatefulKnowledgeSession workingMemory =
> ruleBase.newStatefulKnowledgeSession();
> 		
> Driver d = new Driver("Jack", 28, null);
> workingMemory.insert(d);
> 		
> workingMemory.fireAllRules();
>
> for(Iterator i = workingMemory.getObjects().iterator(); i.hasNext();)
> {
> 	Object obj = i.next();
> 	System.out.println(obj.getClass().getCanonicalName());
> 	
> 	if (obj instanceof Driver)
> 	{
> 		System.out.println("Driver name => " + ((Driver)obj).getName());
> 		System.out.println("Driver age => " + ((Driver)obj).getAge());
> 	}
> }
>
>
> But the drools rule changes the driver name "Jack" by "TOTO", but in the
> console the initial name "Jack" is always displayed.
>
> How to access at the objet who is in knowledge base (the modified objet) ?
>
> Thank. ;)
>
>
>
> --
> View this message in context:
> http://drools.46999.n3.nabble.com/To-access-at-the-fact-object-tp4021064.html
> Sent from the Drools: User forum mailing list archive at Nabble.com.
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