[rules-users] Inserting multiple objects of the same class as facts

[Wolfgang Laun]

Looks like one of the $ldapResponseMap : Map() entries for keys
"zimbraDomainName" or "zimbraDomainType" is not there.
-W

2011/8/5 Devarakonda, Murty <murty.devarakonda at teamaol.com>

>  Hello,
> I am facing a problem with the following code with Drools 5.0.1:
>
>  I insert multiple objects as facts into my stateful session here:
>
>  ===============================================================
>  StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
>
>  /**  mapTypes here is an array of MapType objects **/
>         for(int i=0;i<mapTypes.length;i++) {
>             System.out.println("Inserting the fact type: " + mapTypes[i]);
>             ksession.insert(mapTypes[i]);
>         }
>
>         ksession.insert(ldapLookupKey);
>         ksession.insert(ldapResponseMap);
>
>         ksession.fireAllRules();
>         ksession.dispose();
>  ===============================================================
>
>  And here is my drools file:
>
>  ===============================================================
>
>  rule "LocalRecipient"
>     when
>         $myMapType : MapType( name  ==  "LocalRecipient" )
>         $lookupKey : String()
>         $ldapResponseMap : Map()
>         eval(
> ((($ldapResponseMap.get("zimbraMailDeliveryAddress").equals($lookupKey)) ||
>
> ($ldapResponseMap.get("zimbraMailAlias").equals($lookupKey)) ||
>
> ($ldapResponseMap.get("zimbraMailCatchAllAddress").equals($lookupKey))) &&
>
> ($ldapResponseMap.get("zimbraMailStatus").equals("enabled"))) )
>     then
>         System.out.println("This LocalRecipient rule should work");
>         $myMapType.setQueryFilterCheck(true);
> end
>
>
>
>  rule "VirtualMailboxDomain"
>     when
>         $myMapType : MapType( name  ==  "VirtualMailboxDomain" )
>         $lookupKey : String()
>         $ldapResponseMap : Map()
>         eval(
> (($ldapResponseMap.get("zimbraDomainName").equals($lookupKey)) &&
>                ($ldapResponseMap.get("zimbraDomainType").equals("local"))
> &&
>
>  ($ldapResponseMap.get("zimbraMailStatus").equals("enabled"))) )
>     then
>         System.out.println("This VirtualMailboxDomain rule should work");
>         $myMapType.setQueryFilterCheck(true);
> End
>
>  ===============================================================
>
>
>  Now the problem I am facing is, as long as I defined only rule001 above,
> it works like a charm and the MapType.QueryFilterCheck flag gets set to
> TRUE.
>
>  As soon I put the rule002 above, I started getting a NullPointerException
> with the following lines in the stack trace.
>
>   ===============================================================
>  Caused by: java.lang.NullPointerException
>          at
> com.aol.postfixcache.Rule_LocalRecipient_Rule_0.eval0(Rule_LocalRecipient_Rule_0.java:8)
>         at
> com.aol.postfixcache.Rule_LocalRecipient_Rule_0Eval0Invoker.evaluate(Rule_LocalRecipient_Rule_0Eval0Invoker.java:23)
>         at org.drools.rule.EvalCondition.isAllowed(EvalCondition.java:117)
>   ===============================================================
>
>
>  I tried different combinations along with an extensive search to see why
> I am getting this, but couldn't crack it.  Appreciate your help.
>
>  Regards,
> Murty.
>
>
>
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>
>
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