[rules-users] For each loop in drools

[Mauricio Salatino]

The problem is that $eventSet is a List<Object> and not List<Value>.
So you need to cast and use the old for loop:
for(int i=0; i <  $eventSet.size();i++){
    Value value = (Value)$eventSet.get(i);
}

Greetings.

2010/8/12 Tina Vießmann <tviessmann at stud.hs-bremen.de>

>  Yeah, I think using a normal for loop is better. I just came up with the
> question because I wanted to use a for-each-loop in a simple
> exercise-scenario, because it's a bit faster to write...
>
> Anyway, what I wanted to do is:
>
>     for (Value value : $eventSet) {
>         // raise hell
>     }
>
> Thats where I get the type mismatch.
>
>
> Thanks :)
> Tina
>
>
>
> E.g., Joshua Bloch, "Effective Java", Item 46: Prefer *for-each loops* to
> traditional for loops. Plain old Java.
> -W
>
> 2010/8/12 Mauricio Salatino <salaboy at gmail.com>
>
>> Probably I misread the question.. I thought that Tina was asking about for
>> each loops in Drools Flow.
>> If not where are you using for each??
>> A java for each each node in the RHS?
>>
>> Greetings.
>>
>> 2010/8/12 Wolfgang Laun <wolfgang.laun at gmail.com>
>>
>> I'm not sure whether you and Salboy are on the same wavelength. Tina,
>>> please do provide more
>>> details where and what you want to for-each-loop. Guessing is a waste of
>>> time...
>>> -W
>>>
>>> 2010/8/12 Tina Vießmann <tviessmann at stud.hs-bremen.de>
>>>
>>>  Oh, do I need a loop xml definition? Good to know. -.-
>>>>
>>>> Could  you give me a link with a good explanation/example about how to
>>>> do this?
>>>>
>>>> Thanks :)
>>>>
>>>> Tina
>>>>
>>>>
>>>> The for each loop in Drools Flow recieves a list of objects to iterate
>>>> over it.
>>>> Can you share your loop xml definition? and can you check that the
>>>> variable that it's using is a list?
>>>>
>>>>
>>>> On Thu, Aug 12, 2010 at 1:08 PM, Tina Vießmann <
>>>> tviessmann at stud.hs-bremen.de> wrote:
>>>>
>>>>> Hi,
>>>>>
>>>>> is it possible to use the for each loop in Drools?
>>>>> The engine grouses a type mismatch : cannot convert from element type
>>>>> Object to Value
>>>>>
>>>>> Thanks :)
>>>>> Tina
>>>>> _______________________________________________
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>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>>  - CTO @ http://www.plugtree.com
>>>>  - MyJourney @ http://salaboy.wordpress.com
>>>>  - Co-Founder @ http://www.jbug.com.ar
>>>>
>>>>  - Salatino "Salaboy" Mauricio -
>>>>
>>>>
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>>>>
>>>
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>>
>>
>> --
>>  - CTO @ http://www.plugtree.com
>>  - MyJourney @ http://salaboy.wordpress.com
>>  - Co-Founder @ http://www.jbug.com.ar
>>
>>  - Salatino "Salaboy" Mauricio -
>>
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-- 
 - CTO @ http://www.plugtree.com
 - MyJourney @ http://salaboy.wordpress.com
 - Co-Founder @ http://www.jbug.com.ar

 - Salatino "Salaboy" Mauricio -
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