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

[Martin A]

hi Thomas,

Yes, there are probably many workarounds, including your proposal, also
moving the for loop inside the doSomethingElse() function, but what I'm
wondering is what's wrong with this syntax :))

Thank you

2012/1/11 Swindells, Thomas <TSwindells at nds.com>

>  You could try assigning $item to a local variable and then using that
> within the for loop?****
>
> ** **
>
> Thomas****
>
> ** **
>
> *From:* rules-users-bounces at lists.jboss.org [mailto:
> rules-users-bounces at lists.jboss.org] *On Behalf Of *Martin A
> *Sent:* 11 January 2012 10:02
> *To:* Rules Users List
> *Subject:* Re: [rules-users] For loop inside a modify block problem****
>
> ** **
>
> hi Michael,****
>
> ** **
>
> All of the fields are public, however they are properties of a super class
> of Item. I tried with getters, doesn't work either way. ****
>
> Still getting: 'no such identifier : $item'. When I remove the for loop,
> it goes ok, so I think it messes up things.****
>
> ** **
>
> Best regards,****
>
> Martin****
>
> 2012/1/11 Michael Anstis <michael.anstis at gmail.com>****
>
> RHS is not DRL syntax but Java or MVEL depending on your dialect.
>
> If "id" is not public you should use it's getter. The same goes for
> "quantity".****
>
>
>
> when
>     $item : Item(param1 != 0, param2 == 0, !(this instanceof SpecialItem))
>     $gsc : SomeBusinessLogic
> then ****
>
>     $gsc.doSomething($item.getId() );
>     for (int i = 0; i < $item.getQuantity(); i++) {
>         $gsc.doSomethingElse($item.getId() );
>     }
>     update($gsc);
> end****
>
>
>
> ****
>
> 2012/1/11 Martin A <wmlsub at gmail.com>****
>
> 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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> ** **
>
>
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