Chaining rules, including those in decision tables, can be achieved by using a transient control fact.
rule "your DRL rule 1"
when
YourObject( field == 1 )
then
insertLogical( new TransientControlFact( "dtable1" );
end
rule "your DRL rule 2"
when
YourObject( field == 2 )
then
insertLogical( new TransientControlFact( "dtable2" );
end
Then in the decision table use the transient control fact in an additional column. The DRL would look like this:-
rule "dtable1 row 1"
when
TransientControlFact( dtable = "dtable1" )
YourOtherFacts( )
then
....
end
rule "dtable1 row 2"
when
TransientControlFact( dtable = "dtable2" )
YourOtherFacts( )
then
....
end
How you retrieve the results from the Decision Tables is up to you (e.g. queries, globals etc).
With kind regards,
Mike
Hi,
With Drools I need to execute a DRL first and based on its output value I
need to evaluate a decision table in guvnor and get the output values.
Please let me know how this can be done.
Thanks,
Manasi
--
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