Øyvind Gjesdal created JENA-2254:
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Summary: Custom long/lat spatial predicate pairs for geosparql
Key: JENA-2254
URL: https://issues.apache.org/jira/browse/JENA-2254
Project: Apache Jena
Issue Type: New Feature
Reporter: Øyvind Gjesdal
At the moment geosparql supports many of the old jena-spatial functions.
The jena-spatial module also had custom long/lat and also custom WKT
predicates. At the moment we still use the old jena spatial module, but when
the assembler file for geosparql is ready in jena 4.4, I think we can switch.
Writing an assembler which uses both jena-text and geosparql is how we've
mostly used the jena-spatial module.
One remaining issue we have in our data (from external datasets), is custom
long/lat predicates. Bringing support for these would be nice. I tried to look
at the code, and it seems the geo:long,geo:lat are translated in
https://github.com/apache/jena/blob/main/jena-geosparql/src/main/java/org/apache/jena/geosparql/configuration/GeoSPARQLOperations.java#L749
Would it work/be enough to look up/reuse the jena-spatial assembler predicates,
and also loop through these pairs in the *convertGeoPredicates(Dataset dataset,
boolean isRemoveGeoPredicate)* or should there be a new method to convert
custom predicates?
This is how the old assembler looks, from the jena-site:
{code:java}
# custom geo predicates for 1) Latitude/Longitude Format
spatial:hasSpatialPredicatePairs (
[ spatial:latitude :latitude_1 ; spatial:longitude :longitude_1 ]
[ spatial:latitude :latitude_2 ; spatial:longitude :longitude_2 ]
) ; {code}
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