[rules-users] Drools ruturn multiple results based on child objects data length

[Mohamed Riyaz]

Hi,

In one-to-many relationship object type, Drools generate multiple results
based on child objects data length. ie. No of child records
belongs to parent object. I wanted the RHS part should be executed only if
conditions imposed
on child object satisfies.

I have two facts with 1-* relationship defined in object mapping.

class Invoice{}

class Order{

private Set<Invoice> invoices;

}

*I wanted RHS should be executed with only one result  irrespective of child
records length.*

rule "Multiple results set"
when

    order: Order()
    invoice : Invoice() from order.invoices


  then

    System.out.println("Rule Example (Multiple results set)"+order.getId());
end;

Result:
 Rule Example (Multiple results set)1000
 Rule Example (Multiple results set)1000


Please help me in resolving this issue.

Regards,
Riyaz
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