Re: [rules-users] declare variable
fakhfakh ismail's message received 5/14/2007 3:48 PM:
Hello,
first sorry for my bad english.
I want to declare a variable of type List
rule "userrole"
when
$user1: User (userid1: userId)
$user2: User (userId == userid1)
then
List L = new ArrayList();
if (L.contains($user1.getname())== false)
{
L.add($user1.getname());
System.out.println("hello");
}
end
the problem is everytime the List don't save all element every execution
the variable list is intialised as empty is there other place to
declare List?
(I try after when but error of parsing)
You need to declare the List in your Java code, set it as a Drools global, and declare it
in the DRL
file:
In yourjava.java:
-----------
workingMemory.setGlobal("L", new java.util.List());
-----------
in yourdrl.drl:
-----------
global java.util.List L;
rule "userrole"
when
$user1: User (userid1: userId)
$user2: User (userId == userid1)
then
if (L.contains($user1.getname())== false)
{
L.add($user1.getname());
System.out.println("hello");
}
end
-----------
Wouldn't it be great to have a "static" section in the DRL syntax for
temporaries like this?