"or" causes two rules to be generated internally hence the double activation you report.

i.e. the following are generated internally:-

rule "internal 1"
when
    Person ( gender == "Female" )
then
    resultIds.add("id_1000")
end

rule "internal 2"
when
    Procedure( needToDone == "ABC" )
then
    resultIds.add("id_1000")
end

There are different ways to tackle the duplicate; (1) prevent it from occurring in the first instance, (2) remove duplicates afterwards, both of which are simplified if "resultIds" becomes a Fact rather than presumably a global (although still possible).

(1)

rule "rule"
when
    (
      Person ( gender == "Female" )
      or
      Procedure( needToDone == "ABC" )
    )
    not ResultId( value == "id_1000" )
then
    insert(new ResultId("id_1000"));
end

(2)
rule "rule"
salience 0
when
    Person ( gender == "Female" )
    or
    Procedure( needToDone == "ABC" )
then
    insert(new ResultId("id_1000"));
end

rule "remove duplicates"
salience 1000
when
    $orig : ResultId( $v : value)
    $dup : ResultId( this != $orig, value == $v )
then
    remove( $dup )
end

On 10 February 2011 23:14, kashif10 <kash452@yahoo.com> wrote:

1) If I have a Rule definition

when
#conditions

Person( gender == "Female")
or
Procedure( needToDone == "ABC"))

then
resultIds.add("id_1000");

Is it not short circuit If first condiiton matches?
I get twice time "id_1000" in resultIds.

2) How can I chekc the multiple existence
For Example:

How can I chekc that multiple instances of Procddure have alredayDone= "ABC
"

Rule Definition only chekc once:
Procedure (alredayDone == "ABC")

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