2011/3/22 Michael Anstis <michael.anstis@gmail.com>You could investigate the lists being set-up with a low salience rule and suitable declarative model (or static in a JAR):-
rule "setup"
when
then
insert(new Cheese("cheddar"));
insert(new Cheese("brie"));
end
This should have a very high salience.
rule "likes cheese"
when
$c : Cheese( )
$p : Person( likedCheeses contains $c )
then
System.out.println($p.getName() + " likes " + $c.getName());
end
I think the request was for a check of a fact property being one out of a list. If there's just one list,
you can do
$c : Cheese()
$p : Person( favouriteCheese == $c,... )
or
$p : Person(...)
Cheese( name == $p.favouriteCheese )
With multiple lists, you might add a distinguishing property to the list element, e.g.
insert(new Cheese("French", "Roquefort"));
and then
$p: Person(...)
$c: Cheese( country == $p.country, name == $p.favouriteCheese )
-W
This appears to be possible in Guvnor, although tbh I've not tried in anger.
With kind regards,
Mike
2011/3/22 Alexander, Scott F <scott.f.alexander@jpmorgan.com>_______________________________________________Hi,
Im pretty new to drools and have been going through the docs for the Expert and guvnor. I have some basic unit tests running with the rules I am trying to replicate from a legacy system. One of the rules my current system uses is to check a property in an Object against a list of values and fire if the property is present in the list ie list.contains(someValue);
I am trying to find out what the best practise is for setting up the lists which will be checked against. I don’t want to have to include these lists in java classes and upload them as facts. I would much rather be able to manage them through guvnor so my non technical users can manage them themselves without the need to release a new jar file.
Thanks.
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