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From "David Smiley (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-4895) Implement Spatial "disjoint" predicate.
Date Tue, 02 Apr 2013 02:43:16 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-4895?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13619462#comment-13619462
] 

David Smiley commented on LUCENE-4895:
--------------------------------------

Yeah, I agree.  Some apps will always have spatial data in a field and so calculating IsSpatial()
is redundant, though I suppose that's not a big deal if it's cached.  Where shall that be
cached? Hmmm.
                
> Implement Spatial "disjoint" predicate.
> ---------------------------------------
>
>                 Key: LUCENE-4895
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4895
>             Project: Lucene - Core
>          Issue Type: New Feature
>          Components: modules/spatial
>            Reporter: David Smiley
>            Assignee: David Smiley
>            Priority: Minor
>             Fix For: 4.3
>
>
> The "IsDisjointTo" SpatialOperation is not implemented for RecursivePrefixTreeStrategy
and some/all others(?). It has been very low priority because it is simply the inverse of
"Intersects" which is universally implemented on the SpatialStrategy implementations.  
> * Should spatial "disjoint" count documents that have no spatial data?
> * Arguably, there should be one implementation amongst the SpatialStrategies implemented
in terms of "Intersects"; this way each strategy need not deal with it.

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