Ck,
You need to think different when using forward chaining. Your data will
drive the execution, not your "goals".
So, the state of your facts match rule B twice, it will fire twice.
"Stupid" example:
rule "1. increment counter"
salience 10
when
$c : Counter( value < 2 )
then
System.out.println( "firing rule 1" );
$c.setValue( $c.getValue() + 1 );
modify( $c );
end
rule "2. diplay counter"
when
Counter( $value : value )
then
System.out.println("Value = "+$value);
end
If you do:
wm.assertObject( new Counter( 0 ) );
wm.fireAllRules();
Rules will fire:
1 -> 1 -> 2
But that is because your "state" (facts) drive them in that way. Do you
understand that? Try removing salience attribute and check if there is any
difference. Try making rule 2 higher salience than rule 1. Try asserting
different values for the counter, like new Counter( 2 ).
[]s
Edson
2007/5/9, ch4nd4n <chandan_kumar(a)msn.com>:
Hi,
is there a possibility to fire a particular rule twice?
For example if I have Rules "A", "B", "C", "D"
and I am putting a Person
Object with few parameters,
Then how can I fire in following order
A -> B -> C -> B -> D
Thanks,
Ck
http://www.gfour.net
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