[rules-users] Performance issue

[Wolfgang Laun]

See inline:


On 12/06/2012, Ini <inder.14 at gmail.com> wrote:
> Hi Laune,
>           As you suggested i divided the validate method into three as
> below:

##### Add a parameter: KnowledgeBase kbase
##### remove parameter String rule
> public static void validate(Object beanDetails,String rule, List errorsList){
> 		long methodStartTime=System.currentTimeMillis();

##### remove next line
> 		KnowledgeBase kbase =createKnowledgeBase(rule);
> 		StatelessKnowledgeSession  ksession =
> kbase.newStatelessKnowledgeSession();
> 		ksession.setGlobal("errors", errorsList);
> 		ksession.execute(beanDetails);
> 		long methodEndTime=System.currentTimeMillis();
> 		System.out.println("Time taken in Method validate  in milli seconds
> is::"+(methodEndTime-methodStartTime));
> 	}
>
> 	
> 	private static KnowledgeBase createKnowledgeBase(String rule){
# looks good
> 	}
> 	
> 	private static KnowledgeBuilder createKnowledgeBuilder(String rule){
# looks good
> 	}
>
> but i am not able to understand , how will this help to improve the
> perfoemance?

By building the KnowledgeBase once and using it many times:

KnowledgeBase kBase = createKnowledgeBase(String rule);

for( Object bean: bagOfBeans ){
     validate(kBase,bean,  errorsList);
}

-W

>
> Thanks,
> Ini
>
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