[rules-users] issue with 'forall'

Michal Bali michalbali at gmail.com
Wed May 12 13:52:32 EDT 2010


Hi,

I have encountered the following problem with the latest Drools 5.1 SNAPSHOT

I've created a sample Drools project and replaced the Sample.drl with the
following:
--Sample.drl--------------------------------------
package com.sample

import com.sample.DroolsTest.Message;

rule "Hello World"
when
forall( Message( )
Message() )
then
System.out.println("executed");
end
--------------------------------------------
If I run the sample application  like this everything is fine - "executed"
is printed. However, if I modify the main method and insert some additional
fact just before the message fact is inserted, like this:
--DroolsTest.java-----------------------------------
.....
ksession.insert(new Object());
ksession.insert(message);
.....
-----------------------------------------------------------
then the rule won't fire any more.

Please note that if you change the fact insertion order (first the message
then the Object) it will work as expected.

Is this a bug or am I missing something? I can file a JIRA if needed.

Thank you!
Best regards,
Michal
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