[rules-users] How to write constraint about a Map inside a Map?

[Edson Tirelli]

    What error are you getting?

    I just tested this in MVELSH and it works:

mvel$ map["outerKey"]["innerKey"]
OUT: innerValue

    []s
    Edson


2007/7/24, Felipe Piccolini <felipe.piccolini at bluesoft.cl>:
>
> Suppouse I have a Map attribute and one of the values is another Map...how
> can I check a member of the inner Map?
> class MyFact{
>      Map map;
>      public MyFact(){
>            this.map = new HashMap();
>      }
>
>      ....setter and getter...
>
> }
>
> -- test --
> MyFact myFact = new MyFact();
>
> Map innerMap = new HashMap();
> innerMap.put("innerKey", new String("InnerValue"));
>
> Map map = new HashMap();
> map.put("mapKey", innerMap);
>
> myFact.setMap(map);
>
> .... set the RuleBase and insert myFact as a fact for the WorkingMemory...
>
> -------
>
> Now... how should I write the rule to check the innerKey ??
>
> rule "test InnerMap"
>      when
>            $mf: MyFact( map['mapKey']['innerKey'] == "InnerValue" ) //
> doesnt work...
>     ....
>
>            $mf: MyFact( map['mapKey'].this['innerKey'] == "InnerValue" )
> // doesnt work...
>    $mf: MyFact( map['mapKey'].['innerKey'] == "InnerValue" ) // doesnt
> work...
>    $mf: MyFact( $innerMap: map['mapKey'], $innerMap['innerKey'] ==
> "InnerValue" ) // doesnt work...
>            $mf: MyFact( $innerMap: map['mapKey'] -> ($innerMap['innerKey']
> == "InnerValue" )) // doesnt work...
>
>
> Thanks.
>                                                                         *Felipe
> Piccolini M.*
> felipe.piccolini at bluesoft.cl
>
>
>
>
>
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>
>


-- 
  Edson Tirelli
  Software Engineer - JBoss Rules Core Developer
  Office: +55 11 3529-6000
  Mobile: +55 11 9287-5646
  JBoss, a division of Red Hat @ www.jboss.com
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