If it's stored in a fact field of type int: yes.<br><br>The way you write it: no.<br><br>-W<br><br><br><div class="gmail_quote">On 25 March 2011 18:37, Benson Fung <span dir="ltr"><<a href="mailto:benson.redhat@gmail.com">benson.redhat@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">If the age is String type, can I use Integer.parseInt(age) to change<br>
to integer and then evaluate it?<br>
<br>
like<br>
<br>
when<br>
ad : ApplicationData(Integer.parseInt(age) < 0)<br>
then<br>
ad.setReturnMsg("age should not be negative 0")<br>
end<br>
<div><div></div><div class="h5"><br>
<br>
<br>
<br>
2011/3/26 Wolfgang Laun <<a href="mailto:wolfgang.laun@gmail.com">wolfgang.laun@gmail.com</a>>:<br>
> Sorry, I don't use guided editors.<br>
> -W<br>
><br>
> On 25 March 2011 18:17, Benson Fung <<a href="mailto:benson.redhat@gmail.com">benson.redhat@gmail.com</a>> wrote:<br>
>><br>
>> Hi Wolfgang,<br>
>><br>
>> I managed to author this rule(ApplicationData( age == null || age ==<br>
>> "" )) via Technical Rules editor of BRMS.<br>
>> However, I cannot create this rule via Business Rule Guided Editor of<br>
>> BRMS.<br>
>><br>
>> Could you let me know how?<br>
>><br>
>><br>
>> Thanks<br>
>><br>
>><br>
>><br>
>> 2011/3/26 Wolfgang Laun <<a href="mailto:wolfgang.laun@gmail.com">wolfgang.laun@gmail.com</a>>:<br>
>> > You can't use a method call as the left hand side operand in a<br>
>> > constraint;<br>
>> > thus<br>
>> > age.size() == 0<br>
>> > is not correct.<br>
>> ><br>
>> > Do you really mean<br>
>> > age == "null"<br>
>> ><br>
>> > Probably<br>
>> > ApplicationData( age == null || age == "" )<br>
>> > is the right thing to do, provided that ApplicationData.age is a String.<br>
>> ><br>
>> > -W<br>
>> ><br>
>> > On 25 March 2011 17:32, Benson Fung <<a href="mailto:benson.redhat@gmail.com">benson.redhat@gmail.com</a>> wrote:<br>
>> >><br>
>> >> Hi,<br>
>> >><br>
>> >> I got the following rule problem.<br>
>> >><br>
>> >> The rule is like :<br>
>> >><br>
>> >> 1. | rule "Rule1"<br>
>> >> 2. | dialect "mvel"<br>
>> >> 3. | when<br>
>> >> 4. | ad : ApplicationData( age == "null" ,<br>
>> >> age.size()<br>
>> >> == 0)<br>
>> >> 5. | then<br>
>> >> 6. | ad.setReturnMsg( "age should not be null or<br>
>> >> empty"<br>
>> >> );<br>
>> >> 7. | end<br>
>> >><br>
>> >> where setReturnMsg is a method of ApplicationData Fact();<br>
>> >><br>
>> >> However, I got the validation error :<br>
>> >><br>
>> >> [Rule1] [ERR 101] Line 4:49 no viable alternative at input ')' in rule<br>
>> >> "Rule1" in pattern ApplicationData<br>
>> >> [Rule1] [ERR 102] Line 4:51 mismatched input '==' expecting ')' in<br>
>> >> rule "Rule1" in pattern ApplicationData<br>
>> >><br>
>> >> Please help what the problem is.<br>
>> >><br>
>> >><br>
>> >> Thanks<br>
>> >> _______________________________________________<br>
>> >> rules-users mailing list<br>
>> >> <a href="mailto:rules-users@lists.jboss.org">rules-users@lists.jboss.org</a><br>
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>> ><br>
>> ><br>
>> > _______________________________________________<br>
>> > rules-users mailing list<br>
>> > <a href="mailto:rules-users@lists.jboss.org">rules-users@lists.jboss.org</a><br>
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>> ><br>
>> ><br>
>><br>
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><br>
><br>
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</div></div></blockquote></div><br>