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Call the MEOS functions whose name Spark owns by their class-prefixed name - #79
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estebanzimanyi merged 1 commit intoOct 11, 2026
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Spark owns lower, round, transform, set and unnest, so the generated surfaces register the MEOS
functions under the name the catalog states for Spark and Flink (altSqlName): spanLower for
lower(floatspan), setMake for set(integer[]), setUnnest for unnest(intset), temporalUnnest for
unnest(tint), geoTransform for transform(tgeompoint, integer). The SQL surface test calls them by
these names and checks that lower('ABC'), round(2.5) and transform(array(1, 2), x -> x * 2) answer
as Spark's own functions, while lower over a floatspan is not a MEOS function in Spark.
The test also states two queries of the flights dashboards: a temporal point transformed to
ETRS89-LAEA (SRID 3035) keeps its instants and takes the new SRID, and stboxOverlaps, the
function of && between a temporal point and the box expandSpace gives another, answers true
for a box widened past the distance between the two trips and false for one short of it.
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Spark owns lower, round, transform, set and unnest, so the generated surfaces register the MEOS
functions under the name the catalog states for Spark and Flink (altSqlName): spanLower for
lower(floatspan), setMake for set(integer[]), setUnnest for unnest(intset), temporalUnnest for
unnest(tint), geoTransform for transform(tgeompoint, integer). The SQL surface test calls them by
these names and checks that lower('ABC'), round(2.5) and transform(array(1, 2), x -> x * 2) answer
as Spark's own functions, while lower over a floatspan is not a MEOS function in Spark.
The test also states two queries of the flights dashboards: a temporal point transformed to
ETRS89-LAEA (SRID 3035) keeps its instants and takes the new SRID, and stboxOverlaps, the
function of && between a temporal point and the box expandSpace gives another, answers true
for a box widened past the distance between the two trips and false for one short of it.