I am seeing some odd behavior where it seems that inference is not working
when trying to use a flow process within a stateless knowledge session. I
have tried to do the same thing in both stateful and stateless, and the
behavior is different. It appears that if one rule inserts a fact in its
right hand side that causes another rule in a different flow-group to become
activated, the rule-flow (which should progress to the next flow group) will
not allow that rule to fire if the session is stateless. It is possible I am
confused about how a rule-flow evaluates or the order in which it evaluates
with respect to inference, but it is working as I expected in a stateful
session.
An example:
I have a simple rule flow with two flow-groups, group1 and group2. They are
connected one after the other
in a file with id TestFlow
start->group1 -> group2 -> end
I then have a simple rules file:
declare Fact1
num: int
end
declare Fact2
num: int
end
rule "Rule1"
ruleflow-group "group1"
when
Fact1()
then
System.out.print("FIRING 1");
insert(new Fact2());
end
rule "Your Second Rule"
ruleflow-group "group2"
when
Fact2()
then
System.out.print("FIRING 2");
end
When used in a stateful session, both rules will fire and print their
respective output. In a stateless, the second rule will never fire. To
execute this test, I am using the same code against both a stateless and
stateful session:
FactType fact = kbase.getFactType("org.test", "Fact1");
Object one = fact.newInstance();
List cmds = new ArrayList();
cmds.add(CommandFactory.newInsert(one));
cmds.add(CommandFactory.newStartProcess("TestFlow"));
cmds.add(CommandFactory.newFireAllRules()); // Only need this in stateful
ksession.execute(CommandFactory.newBatchExecution(cmds));
Does anyone have any suggestions?
Thanks,
Jeff
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