how can I get all variables in process?

[trash wang]

Hi, all

   I'm a newbie. When I used the jbpm5.2, I found nowhere to get the variables list in the process. I need dump all the variables defined in process to do some work outside the jbpm and then synchronize these variables back to jbpm. How can I do this?

[Maciej Swiderski]

check the documentation for details on how to access process variables.

HTH

[trash wang]

well, I think that interface is introduced from version 5.4. however, I use the jbpm5.2 now. Is that mean I must upgrade to 5.4 or get the variables' defination list from the .bpmn file?

[Maciej Swiderski]

I don't think the interface was added in 5.4 it was only documented in 5.4 but the usage in 5.2 should be exactly the same.

HTH

[Josny Delson]

I think there is no class named  VariableScopeInstance in jbpm5.2. 

Try this code to get variables from .bpmn file.

variable = ((WorkflowProcessInstance) proc).getVariable("variableName");

[Maciej Swiderski]

Looking at the class VariableScopeInstance it was there from the very beginning - was created like 3 years ago and I can see it in 5.2.x branch on github too.

[Josny Delson]

Sorry Maciej, i couldn't able to find the class VariableScopeInstance in 5.2 javadoc Knowledge API 5.3.1.Final API.

But the class exists in jbpm-flow-5.2.0.Final.jar file.

@ trash wang , u just add  jbpm-flow-5.2.0.Final.jar file in ur class path , u get all the variables list in the process using VariableScopeInstance class