[LUCENE-2778] Allow easy extension of RAMDirectory

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 3.1, 4.0-ALPHA
• Component/s: core/store
• Lucene Fields: New, Patch Available
• Assignee: Shai Erera
• Reporter: Shai Erera
• Created: 25/Nov/10 13:55
• Updated: 28/Aug/22 12:36
• Resolved: 25/Nov/10 19:45

Description

RAMDirectory uses RAMFiles to store the data. RAMFile offers a newBuffer() method for extensions to override and allocate buffers differently, from e.g. a pool or something. However, RAMDirectory always allocates RAMFile and doesn't allow allocating a RAMFile extension, which makes RAMFile.newBuffer() unusable.

I think we can simply introduce a newRAMFile() method on RAMDirectory and make the RAMFiles map protected, and it will allow really extending RAMDir.

I will post a patch later.