On Thu, Jun 24, 2010 at 5:33 AM, Stephen Mcgruer <s0840449@sms.ed.ac.uk> wrote:

Hi there. I'm trying to get automatic update of rules working in my
project, and seem to
have run into a problem. As far as I can tell, automatic polling and
updating is turned
on, and claims to update the knowledgebase, but changes to the rules
don't seem to have
any effect. A simple example - if I add the rule:

rule "TestRule"
dialect "mvel"
when
then
System.out.println("Hello, world!");
end

And start my application, I get:

Firing all rules...
Hello, world!
All rules fired.

As expected. If I then change the rule as follows:

rule "TestRule"
dialect "mvel"
when
then
System.out.println("I have changed!");
end

I get this output (timestamps trimmed for readability):

ResourceChangeScanner attempt to scan 1 resources
ResourceChangeScanner modified resource=[UrlResource
path='http://localhost:1337/drools-guvnor/org.drools.guvnor.Guvnor/package/ERMIE/v0.1']
:
1277371031000 : 1277371254000
ResourceChangeNotification received ChangeSet notification
ResourceChangeScanner thread is waiting for 60
ResourceChangeNotification processing ChangeSet
ResourceChangeNotification ChangeSet modified resource=[UrlResource
path='http://localhost:1337/drools-guvnor/org.drools.guvnor.Guvnor/package/ERMIE/v0.1']
for listener=org.drools.agent.impl.KnowledgeAgentImpl@e2d0b2
KnowledgeAgent received ChangeSet changed notification
ResourceChangeNotification thread is waiting for queue update
KnowledgAgent applying ChangeSet
KnowledgeAgent ChangeSet requires KnowledgeBuilderKnowledgeAgent
rebuilding KnowledgeBase
using ChangeSet
KnowledgeAgent building resource=[UrlResource
path='http://localhost:1337/drools-guvnor/org.drools.guvnor.Guvnor/package/ERMIE/v0.1']
KnowledgeAgent adding KnowledgeDefinitionsPackage ERMIE
KnowledgeAgent new KnowledgeBase now built and in use

So, this makes it seem like everything has worked. However, if I
insert a new fact and
fire all rules...

Inserting new fact...
Hello, World!

So, it hasn't worked. What might I have done wrong?

-Stephen

--
The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.

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