Attribute escapes class context

[lukaskabc]

When working with class that has @Context defined and with a simple data property (Instant):
Updating attribute on managed instance from native query saves the value to default context.

Example class (customized version copied from Jopa integration tests)

Steps to reproduce:

1. Create a class with @Context defined
2. Create a new entity in a standalone transaction (and commit it)
3. Everything is saved correctly in the defined context
4. Start a new transaction
5. Acquire managed instance with native query
6. Update value of an attribute
7. (optional) merge the entity (explicitly calling entity manager merge makes no diference)
8. Commit transaction
9. The triple of the attribute is saved to default database context, not in the entity context (the original triple is removed from the entity context)

Expected result: the updated triple should be stored in the entity context

Observations:
a. detaching the entity first and then explicitly calling merge saves the update to correct context
b. updating instance from entity manager find saves the update to correct context

Demo:
https://github.com/lukaskabc/GraphDB-Graph-Transaction/blob/entity_merging_default_context/src/main/java/com/example/demo/TestRunner.java#L34
https://github.com/lukaskabc/GraphDB-Graph-Transaction/blob/entity_merging_default_context/src/main/java/com/example/demo/TransactionExecutor.java#L46

[ledsoft]

The most likely explanation is that entity loading from query result does not take the annotation-based descriptor into account. Temporary workaround is to pass the descriptor explicitly to the query.