This is straightforward: You use $param, as usual, in the code snippet, and
the list in the cell below:
Data
coverType in ( $param )
"A","B", "C", "D"
"X","Y","Z"
To obtain the actual value from the fact, use a binding variable and refer
to this in the action.
Data
$ct: coverType in ( $param )
--------------------
result
add( $ct )
and an 'x' in the cells below, where required.
-W
2011/2/5 David Smith <mail(a)davesmith.me.uk>
Hi,
I am pocing/learning drools and I am trying to implements Compound Value
Restrictions using 'In' in a decision table.
I can do this in a rule like
rule "CoverType Example"
when
$risk : Data( coverType in ("A","B", "C",
"D"))
then
result.add("CoverType was one of A, B C or D");
end
I can also implement this in a decision table in a long winded fashion
Condition, Action
Data, result
coverType, add("$param")
A, CoverType was one of A, B C or D
B, CoverType was one of A, B C or D
C, CoverType was one of A, B C or D
D, CoverType was one of A, B C or D
Is there a compact way to do this using a Compound Value Restriction using
in?
Something like:
Condition, Action
Data, result
coverType in, add("$param")
"A,B,C,D", CoverType was one of A, B C or D
What goes in the script part "coverType in"?
The number of items in the list can be variable, so don't want to write
something that has $1, $2, $3, $4
Thanks
David
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