Previously, Scene.Inventory.DeRezObjects() forced the persistence of prims before deletion.
This is necessary so that freshly delinked prims can be deleted (otherwise they remain as parts of their old group and reappear on server restart).
However, DeRezObjects() deleted to user inventory, which is not required by llDie() or direct region module unlink and deletion.
Therefore, forced persistence has been pushed down into Scene.UnlinkSceneObject() to be more general, this is still on the DeRezObjects() path.
Uncommented TestDelinkPersistence() since this now passes.
Tests required considerable elaboration of MockRegionDataPlugin to reflect underlying storing of parts.
Previously, Scene.Inventory.DeRezObjects() forced the persistence of prims before deletion.
This is necessary so that freshly delinked prims can be deleted (otherwise they remain as parts of their old group and reappear on server restart).
However, DeRezObjects() deleted to user inventory, which is required by llDie() or direct region module unlink and deletion.
Therefore, forced persistence has been pushed down into Scene.UnlinkSceneObject() to be more general, this is still on the DeRezObjects() path.
Uncommented TestDelinkPersistence() since this now passes.
Tests required considerable elaboration of MockRegionDataPlugin to reflect underlying storing of parts.
Added a MockRegionDataPlugin to do in-memory persistence for tests since adding this to OpenSim.Data.Null.NullDataStore doesn't seem appropriate
NullDataStore can do nothing because OpenSim only ever retrieve region objects from the database on startup. Adding an in-memory store here would be unecessary overhead.
This fixes the problem for all architectures (hg as well as local and grid) and means we don't have to dupe code between connectors.
Not ideal in that it becomes non-modular, but methods in Scene.Inventory.cs should eventually be modularized anyway.
The agentID in AddInventoryItem(UUID agentID, InventoryItemBase item) is redundant since it's contained in item.Owner, and it doesn't make sense for agentID != item.Owner, hence the method is deprecated.
By the time a scheduled update is triggered, a sog may have been removed from the scene. This change prevents NullReferenceExceptions in these situations.
The new SceneGraph method is more consumable by region modules that want to extract objects from inventory and add them to the scene in separate stages.
This change also reduces the number of redundant client updates scheduled when an object is rezzed directly by a script or region module
This code does not touch direct rez by a user
