Delegations, why are they used?

[mehmetbilgi]

What is the point of using delegations? I can see them everywhere (every plug-in point) in the code; TaskController, AssignmentHandler, etc.. And how they relate to serialization and deserialization of their counterparts (eg: a custom AssignmentHandler) ?

Thanks in advance.
M.Bilgi

[aguizar]

What is the point of using delegations?

There is no better way to let the developer using jBPM to incorporate custom code. Aggregation vs. inheritance.

how they relate to serialization and deserialization of their counterparts (eg: a custom AssignmentHandler) ?

Each field of the "counterparts" is saved to a column in the database, while the configuration for a delegation is saved as text so you don't have to map each of them.