> On Dec 15, 2018, at 9:59 AM, Marco Neumann <[email protected]> wrote:
> 
>> *Question*: does that make sense to have a unique Lucene index for text and
>> space ?
>> It is possible at all? If yes, is it good in terms of disk space and
>> performance?
>> Like this:
>> <#indexLucene> a text:TextIndexLucene ;
>>               a spatial:SpatialIndexLucene ;
>>               # etc ...

I'm sure that would be ideal for many cases, but I'm not at all sure that the 
same index can answer queries of both kinds. Perhaps we can combine fields from 
both, but are the relationships between tuple and index record the same in both 
cases? 

Otherwise, I know we had a conversation at some point in the past on one of the 
lists about trying to factor out commonalities between jena-spatial and 
jena-text, but it didn't go very far at that time and I don't know what the 
intervening years have done to make it more or less feasible. There have been 
many changes to jena-text in that time and the new spatial module is a whole 
new story. I'd put a link here but searching lists.apache.org hasn't brought it 
up for me.

ajs6f

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