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From Steven A Rowe <sar...@syr.edu>
Subject RE: Reverse Searching
Date Mon, 17 May 2010 21:21:46 GMT
Hi Siraj,

Lucene's MemoryIndex can be used to serve this purpose.

>From <http://lucene.apache.org/java/3_0_1/api/contrib-memory/org/apache/lucene/index/memory/MemoryIndex.html>:

	[T]his class targets fulltext search of huge numbers
	of queries over comparatively small transient realtime
	data (prospective search). 

MemoryIndex can only hold one document at a time.

See also Lucene's InstantiatedIndex, which can hold more than one document at a time:

<http://lucene.apache.org/java/3_0_1/api/contrib-instantiated/org/apache/lucene/store/instantiated/InstantiatedIndex.html>

Steve

On 05/17/2010 at 4:38 PM, Siraj Haider wrote:
> Hello there,
> In oracle text search there is a feature to reverse search using
> ctxrule.  What it does is, you create an index (ctxrule) on a column
> having your search criteria(s) and then throw a document on it and it
> tells you which criteria(s) it satisfies.  Is there something in Lucene
> that does that or there are any plans to do that?
> 
> thanks
> -siraj

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