[LUCENE-581] Index, a new generalization super root

• Type: New Feature
• Status: Closed
• Priority: Minor
• Resolution: Won't Fix
• Affects Version/s: 2.0.0
• Component/s: core/index
• Assignee: Unassigned
• Reporter: Karl Wettin
• Created: 27/May/06 15:19
• Updated: 28/Aug/22 11:27
• Resolved: 23/Jul/06 20:41

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).

Issue Links

• is part of: LUCENE-550 InstantiatedIndex - faster but memory consuming index