Re: [rules-users] (no subject)
About the duplicated $s varaible, is because you have 2 DIFFERENT conditions
saying $s:Student (same thing for $c)
The rules you have there are translated to (when age field has a value):
when
$s:Student (age == 18) //if age value was 18
$s:Student (mark == 20")
$c:College (ranking == "85 A")
$c:College (location == "Delhi")
then
....
end
If you want to "join" constraint about Student and constraint about
Collegues to get something like:
when
$s:Student (age == 18, mark == 20")
$c:College (ranking == "85 A", location == "Delhi")
then
....
end
you will need to merge the 2 cells containing $s:Student and the 2 cells
containing $c:College. This way is how you tell drools that you want to
define 1 condition with multiple constraints instead of multiple condition
with one constraint each.
Best Regards,
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com
On Wed, Aug 24, 2011 at 2:12 PM, FrankVhh <frank.vanhoenshoven(a)agserv.eu>wrote:
Hi to you,
The error message seems to indicate that you are having 2 (types of) errors
in your decision table.
Error type 1: You have duplicate names.
As I am assuming that you are comparing 1 student with 1 college, you can
delete one $s: Student() and one $c: College() cell. Then, you merge the
cells above the columns. That way the engine will not have a duplicate $c,
but work on the same student data.
Error type 2: you are trying to set a String value to a certain attribute.
Bear in mind that the $param parameter is replaced by exactly what is in
the
cell and only what is in the cell. Therefore, you need to include " around
you strings. F.e. $c.setValue("$param");
There might be some other things missing as well, but this is what the
error
message is stating.
Regards,
Frank
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