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https://issues.apache.org/jira/browse/LUCENE-4167?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13402865#comment-13402865
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Chris Male commented on LUCENE-4167:
------------------------------------

A follow up to this patch is to break out the operation specific 
makeXXXQuery/Filter into their own interfaces so the concrete Strategys can 
declare what operations they support.  We would strip SpatialStrategy back to 
just having createFields and then each operation specific interface (say 
IntersectsStrategy) would extend it.  If a concrete Strategy didnt care for any 
of the standard operations, then it could just implement SpatialStrategy and do 
what it likes.  However those we have currently could implement 
IntersectsStrategy, and TwoDoubles could implement DisjointStrategy.

I'll update the patch.
                
> Remove the use of SpatialOperation
> ----------------------------------
>
>                 Key: LUCENE-4167
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4167
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: modules/spatial
>            Reporter: Chris Male
>         Attachments: LUCENE-4167.patch
>
>
> Looking at the code in TwoDoublesStrategy I noticed 
> SpatialOperations.BBoxWithin vs isWithin which confused me.  Looking over the 
> other Strategys I see that really only isWithin and Intersects is supported.  
> Only TwoDoublesStrategy supports IsDisjointTo.  The remainder of 
> SpatialOperations are not supported.
> I don't think we should use SpatialOperation as this stage since it is not 
> clear what Operations are supported by what Strategys, many Operations are 
> not supported, and the code for handling the Operations is usually the same.  
> We can spin off the code for TwoDoublesStrategy's IsDisjointTo support into a 
> different Strategy.

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