[rules-users] Dynamic rules in Drools 6

[Mark Proctor]

On 23 Jan 2014, at 16:02, jhusby <husby024 at umn.edu> wrote:

> Looking at the test case from Edson, quoted below, it appears that there's no
> way to reuse a current session when upgrading the kbase rules?  I need to
> add and remove rules on the fly, and so if I have a stateful session, does
> this mean I need to dispose of the current session, upgrade the container,
> create a new session, and repopulate it with all my objects? 
> 
> I was hoping to simply rebuild the repository, call
> kContainer.updateToVersion(), and have the the session (with all my objects
> still populated) automatically use that new version of the rules repository. 
> Is this not possible? 
> 
yes,this is how it works now. Make sure you build the jar with the maven plugin, so that it can performance the incremental diff. We have a number of low level unit tests, that show this should work. If you have found a bug, please update the test class here:
https://github.com/droolsjbpm/drools/blob/master/drools-compiler/src/test/java/org/drools/compiler/integrationtests/IncrementalCompilationTest.java

Mark


> Thanks, 
> Joseph 
> 
> 
>> Edson Tirelli-4 wrote
>> Here is a code example of creating kie modules in memory and upgrading 
>> existing kbases/ksessions: 
>> 
>> https://github.com/droolsjbpm/drools/blob/master/drools-compiler/src/test/java/org/drools/compiler/integrationtests/IncrementalCompilationTest.java#L106
>> 
>>   It is a test case, but maybe it will be easier to follow. We are
>> working 
>> on additional ways of doing similar things as well. 
>> 
>>   Edson
> 
> 
> 
> 
> 
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