[rules-users] For loop inside a modify block problem

[Wolfgang Laun]

It is your problem, which I've reproduced.  And "being broken" sure means
"a bug".
-W

2012/1/12 Martin A <wmlsub at gmail.com>

> Hello, Wolfgang,
>
> Looks like the same problem appears on my side... So is it a bug, or
> misuse of the MVEL syntax?
>
> Best regards,
> Martin
>
> On Thu, Jan 12, 2012 at 4:11 PM, Wolfgang Laun <wolfgang.laun at gmail.com>wrote:
>
>> Using 5.3.0 Final.
>>
>> The reported compilation problem ("no such identifier: $item") occurs
>> with dialect MVEL, which appears to be broken w.r.t. RHS code containing
>> a "for" statement. Note: the error is not flagged for the preceding
>> occurrrence
>> of $item, in $item.id.
>>
>> Different kind of errorscan  occur, depending on how the "for"
>> statement is written,
>> for example:
>>   int h = 10; for( int i = 0; i < h; i++) { ... }   ## Error: no such
>> identifier: h
>>
>> Avoid dialect MVEL - using Java and getters works fine.
>>
>> -W
>>
>>
>> On 11/01/2012, Martin A <wmlsub at gmail.com> wrote:
>> > Hi, Davide,
>> >
>> > Here is how my rule looks like :
>> >
>> > when
>> >     $item : Item(param1 != 0, param2 == 0, !(this instanceof
>> SpecialItem))
>> >     $gsc : SomeBusinessLogic
>> > then
>> >     $gsc.doSomething($item.id);
>> >     for (int i = 0; i < $item.quantity; i++) {
>> >         $gsc.doSomethingElse($item.id);
>> >     }
>> >     update($gsc);
>> > end
>> >
>> > The above snippet throws an error @ i < $item.quantity, and says 'no
>> such
>> > identifier $item'...
>> > I can't figure out what might be causing this.
>> >
>> > Thanks
>> >
>> > On Tue, Jan 10, 2012 at 10:08 PM, Davide Sottara <dsotty at gmail.com>
>> wrote:
>> >
>> >> Did you remember to bind $item to some expression in the LHS ? Maybe
>> you
>> >> just
>> >> called that "item" without the $ :)
>> >> Davide
>> >>
>> >> (the original "modify" syntax is still wrong anyway)
>> >>
>> >> --
>> >> View this message in context:
>> >>
>> http://drools.46999.n3.nabble.com/rules-users-For-loop-inside-a-modify-block-problem-tp3648460p3648718.html
>> >> Sent from the Drools: User forum mailing list archive at Nabble.com.
>> >> _______________________________________________
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>> >> rules-users at lists.jboss.org
>> >> https://lists.jboss.org/mailman/listinfo/rules-users
>> >>
>> >
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>
>
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