[Storables] Lists of primitive type cannot be updated

[jre-1986]

Relevant versions:
Xyna 10.3.0.0
Base 1.1.0

Expected behavior: Using the service xnwh.persistence.PersistenceServices.update to update a persisted storable, a member that is a list of primitive types (string, int) can be easily replaced and all entries updated.

Problem / actual behavior: The service replaces all existing values with the value of the first entry in the new list. Changes to the list length are not taken into account as well. See Workflow examples below.

Additional information: At the moment, the only workaround for this is saving the entire storable. However, this creates race conditions when multiple processes have to write into the same storable thus overwriting their changes.

Examples:

#1 A simple storable was saved in a database as follows:

#2 Using update it is easily possible to replace the string variable "testdata"

#3 Using the following update workflow, it is not possible to properly update the primitive String list "testprimitive"

#4 Instead of a proper update, the list is saved as