[rules-users] Loop Drools on Multi Element

[FrankVhh]

Hi,

See forall element in Drools manual:
5.8.3.6.1. Conditional Element forall

It does exactly what you describe. For the record, you may want to insert
all your line items separately to working memory.

Kind regards,
Frank


aliosha79 wrote
> 
> Hi,
> i'm Alessio and i'm new in this forum. I'm learning to use drool in this
> period and i'm facing a problem.
> Briefly:
> 1- i have an xml document with a repeated element i.e.:
> <order>
>   <orderLine>
>         <lineItem>
>               <name>item1</name>
>               <quantity>35</quantity>
>         </lineItem>
>   <orderline>
>   <orderLine>
>         <lineItem>
>               <name>item2</name>
>               <quantity>65</quantity>
>         </lineItem>
>   <orderline>
>   <orderLine>
>         <lineItem>
>               <name>item3</name>
>               <quantity>52</quantity>
>         </lineItem>
>   <orderline>
>   <priority>Normal</priority>
> </order>
> 
> 2- i marshalled it in a java class named "OrderType" using jaxb library
> 3- then i want to apply a rule stating: /IF EVERY LINEITEM QUANTITY IS
> GREATER THAN 2
>                                                 THEN SET PRIORITY TO HIGH/
> 
> i can access every single order line Element using this rule:
>  
> when
>    $Order : OrderType($Order.OrderLine[0].LineItem.Quantity.Value > 2)
> then
>    $Order.getUBLRuleEnginePriority().setValue("High");
> 
> $Order.addApplyedRule("hpRule");
> end
> 
> But how can i cycle on each of them writing the rule at point 3?
> Thanks a lot.
> Aliosha
> 


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