JBPM 5.3 - migration of WORKITEMINFO.WORKITEMBYTEARRAY

[jhouzard]

Hi!

I have some workflows serialized in the WORKITEMINFO table (waiting for the completeWorkItem call). The workitembytearray contains some of my business objects used by the work items.

My problem is that I have refactored some of my business objects and now the already serialized workflow can't be finished by JBPM.

When I call the completeWorkItem for the serialized workflows, the class org.drools.marshalling.impl.InputMarshaller perform the "WorkItem readWorkItem( MarshallerReaderContext context )" but fails with the ClassNotFoundException. Indeed, the class it tries to unserialize has been renamed.

How can I provide my own version of the ObjectInputStream so that I can override "protected ObjectStreamClass readClassDescriptor()" to specify the new name of my refactored classes?

Does someone have a solution for this issue?

Thank you

[swiderski.maciej]

I am afraid you need to have the object that you stored in the same or backward compatible form. What you might do is to make sure that both (old and new object) exists on class path and the create your own ObjectMarshallingStrategy that would extend default one. In your custom impl you would first the the object to read it in the old form and then manually move data to new one and that should be returned to the process. Here is an article that can help you started with ObjectMarshallingStrategy.

P.S.

this assumes you use jbpm 5.3 and drools 5.4 or newer versions.

HTH

[jhouzard]

Ok thank you, I will try that way