[rules-users] Does evaluating two facts of same type in one when condition works?

[Wolfgang Laun]

The rule is capable of locating two different facts of type PlaceHolder
because you wrote it that way: one is supposed to have a field
value equal to 1, and the other one equal to 2. (Clearly, there cannot
be one fact where value equals 1 and 2 at the same time.)

Drools (and other rule-based systems) wouldn't be worth a
farthing if they weren't able to do that ;-)

-W


On 7/3/09, balachandra maddina <chandu2708 at gmail.com> wrote:
>
> Hi There,
>
>   Im wondering weather the Following rule would work properly,
>
>    rule "abc"
>
>      when
>
>           a : PlaceHolder(value == 1)
>           b : PlaceHolder(value == 2)
>
>      then
>       System.out.println("print");
> .........................
> workingmemory.insert(placeholderobject1);
> workingmemory.insert(placeholderobject2);
> workingmemory.fireAllRules();
> ..........................................
>
> when i tried, the code is working fine, but How can the rule here is able
> to diffirentiate between two facts of same type? any help would be very much
> appriciated.
>
> Thank you,
> bala.
>
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