Index, a new generalization super root

• Key: LUCENE-581
• Type: New Feature
• Status: Closed
• Resolution: Won't Fix
• Priority: Minor
• Assignee: Unassigned
• Reporter: Karl Wettin
• Component/s: Index
• Affects Version/s: 2.0.0

Description

This update adds a new super class Index, extended by Directory. It allows for transparent communication between your application and the persistency mechanism. It takes issue 550 one step closer to backwards compability.

• Term and Document are no longer final classes.
• InterfaceIndexWriter

I also added these two in the Index.

abstract index.openIndexWriter()
abstract index.openIndexReader();

There is some bonus material that use this:

• Decorators for
• Index
• InterfaceIndexWriter
• IndexReader
• IndexSearcher

• NotifiableIndex, adds notification of changes to any Index.
• CreateListener
• DeleteListener
• OptimizationListener (not implemented)
• ContentUpdateListener, reacts to any change of the index. Optimized for some implementations.

• AutofreshedSearcher, contains a searcher that is always up to date with the index and have a buffer with old searchers that will be closed when nobody is using them anymore (hopefully).

Comments

[Karl Wettin]

The required update

[Karl Wettin]

Bonus material

[Karl Wettin]

This issue can be deleted. It is now a part of issue 550, and have been changed from inheritence to an aggregation (strategy pattern) to ensure backwards compability.

[Hoss Man]

resolved per orriginal reporter as part of a larger (seperately tracked) issue