[rules-users] Ask for help on rule authoring

[Benson Fung]

suppose String first

2011/3/26 Mauricio Salatino <salaboy at gmail.com>:
> yeah... that it's age? an int?
>
>
> 2011/3/25 Wolfgang Laun <wolfgang.laun at gmail.com>
>>
>> You can't use a method call as the left hand side operand in a constraint;
>> thus
>>    age.size() == 0
>> is not correct.
>>
>> Do you really mean
>>    age == "null"
>>
>> Probably
>>   ApplicationData( age == null || age == "" )
>> is the right thing to do, provided that ApplicationData.age is a String.
>>
>> -W
>>
>> On 25 March 2011 17:32, Benson Fung <benson.redhat at gmail.com> wrote:
>>>
>>> Hi,
>>>
>>> I got the following rule problem.
>>>
>>> The rule is like :
>>>
>>> 1.      |       rule "Rule1"
>>> 2.      |           dialect "mvel"
>>> 3.      |           when
>>> 4.      |               ad : ApplicationData( age == "null" , age.size()
>>> == 0)
>>> 5.      |           then
>>> 6.      |               ad.setReturnMsg( "age should not be null or
>>> empty" );
>>> 7.      |       end
>>>
>>> where setReturnMsg is a method of ApplicationData Fact();
>>>
>>> However, I got the validation error :
>>>
>>> [Rule1] [ERR 101] Line 4:49 no viable alternative at input ')' in rule
>>> "Rule1" in pattern ApplicationData
>>> [Rule1] [ERR 102] Line 4:51 mismatched input '==' expecting ')' in
>>> rule "Rule1" in pattern ApplicationData
>>>
>>> Please help what the problem is.
>>>
>>>
>>> Thanks
>>> _______________________________________________
>>> rules-users mailing list
>>> rules-users at lists.jboss.org
>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>>
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>
>
>
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