[OAK-6636] Create a path cache for the CompositeNodeState

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.7.7, 1.8.0
• Component/s: composite
• Assignee: Unassigned
• Reporter: Tomek Rękawek
• Created: 08/Sep/17 08:46
• Updated: 14/Sep/17 13:01
• Resolved: 08/Sep/17 09:01

Description

The only non-reference field in the CompositeNodeState is the path. Assuming we have many node states in the memory, it may be a bit expensive to store their paths in the memory.

On the other hand, after the recent optimizations (see linked issues), the set of the nodes which should be wrapped with the CompositeNodeState is limited to:

• /
• /oak:index and its direct children
• /jcr:system
• /jcr:system/nt:permissionsStore

That's why it makes sense to use a string cache to store all the paths.

Issue Links

• relates to: OAK-6559 Don't allow to place mounts under mounts
• relates to: OAK-6585 Allow to use patterns in the Mount#pathSupportingFragments