[rules-users] Drools Flow 5.1 - Update JPA Entity - while workitem is in pending state - variable persistence strategy

[Vijay K Pandey]

Thanks Kris. That's what I thought later on after your first mail on this topic. So I did got the JPA entity persisted/merged after retrieving the entitymanagerfactory from the working memory's environment and got it done through the JPA transaction - I will refactor this to use the JPA command service so that I don't have to deal with transaction et all.



-----Original Message-----
From: rules-users-bounces at lists.jboss.org [mailto:rules-users-bounces at lists.jboss.org] On Behalf Of Kris Verlaenen
Sent: Wednesday, November 25, 2009 10:06 AM
To: Rules Users List; Vijay K Pandey
Cc: Rules Users List
Subject: Re: [rules-users] Drools Flow 5.1 - Update JPA Entity - while workitem is in pending state - variable persistence strategy



Quoting Vijay K Pandey <VPandey at mdes.ms.gov>:



> > c)    I would like to change it through Drools Process because that's

> where I have associated the JPA entities - I would not like to update

> it from outside.



Not sure this is a problem.  You merely create an association to these

JPA entities (assuming we implement the pluggable persistence strategy

here as well).  And the engine is only interested in the start and

completion of the work item, not really in anything that happens in

between.  So I don't think updating the JPA entities from outside the

engine should be considered a problem.



In theory you could easily update the work item, we simply don't have a

command for that implemented.  If you would write a command that can

then be executed inside a transaction using the JPA command service,

those changes would be persisted.



Kris



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