topic The best practise to bind JPA-Entity to process in Alfresco Archive

The best practise to bind JPA-Entity to process

omd — Thu, 05 May 2016 10:39:40 GMT

Hi,I would like to ask you, what is the best way of binding a JPA-Entity to activiti process?I tried to set bean as a process variable:variables.put("myBean", myBean);runtimeService.startProcessInstanceByKey("myProcess", variables);‍‍‍‍But this solition has a big drawback. I store the same data in t

Re: The best practise to bind JPA-Entity to process

omd — Thu, 05 May 2016 12:28:55 GMT

Is it a good idea to store in process variables only jpa-entity object id?
<java>
variables.put("myBeanID", myBean.getId());
runtimeService.startProcessInstanceByKey("myProcess", variables);
</java>

Regards

Re: The best practise to bind JPA-Entity to process

jbarrez — Tue, 10 May 2016 10:02:11 GMT

> Is it possible to store in a process only a reference to my bean ?

Activiti has out of the box JPA integration, solving exactly this problem: http://activiti.org/userguide/index.html#_jpa

Re: The best practise to bind JPA-Entity to process

jwestra — Wed, 11 May 2016 13:55:34 GMT

Joram,

I'm interested in learning more on Activiti/JPA integration. Our business entity layer is Cassandra and not JPA-enabled, but understanding the semantics might allow us to replicate similar behavior.

For instance, what classes/methods does Activiti add the hooks to autostore and autoload (e.g. if the process var is annotated as a JPA entity, go load it from the EntityManager when the process variable is loaded)?

Jason

Re: The best practise to bind JPA-Entity to process

jbarrez — Wed, 18 May 2016 16:08:57 GMT

Check following classes to get an idea:

https://github.com/Activiti/Activiti/blob/master/modules/activiti-engine/src/main/java/org/activiti/engine/impl/variable/JPAEntityVariableType.java

https://github.com/Activiti/Activiti/blob/master/modules/activiti-engine/src/main/java/org/activiti/engine/impl/variable/JPAEntityScanner.java

https://github.com/Activiti/Activiti/blob/master/modules/activiti-engine/src/main/java/org/activiti/engine/impl/variable/JPAEntityMappings.java

https://github.com/Activiti/Activiti/blob/master/modules/activiti-engine/src/main/java/org/activiti/engine/impl/variable/JPAEntityListVariableType.java