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Read a raster derived by arithmetic along a trip on the typed Spark surface #82

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Merged
estebanzimanyi merged 1 commit into from
Oct 15, 2026
Merged

Read a raster derived by arithmetic along a trip on the typed Spark surface #82

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22 changes: 22 additions & 0 deletions src/test/java/org/mobilitydb/spark/GeneratedSqlSurfaceTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -465,4 +465,26 @@ void peakCountOverMergedPieces() {
+ "(SELECT k, tgeompointFromText(s) AS g FROM VALUES " + rows + " AS t(k, s)) "
+ "WHERE k = 1 GROUP BY k)"));
}

@Test
void aRasterDerivedByArithmeticIsReadAlongATrip() {
// A 3x3 32BF depth raster in SRID 4326 holding 10, 20, 30 / 40, 50, 60 / 70, 80, 90,
// as PostGIS's ST_AsHexWKB writes it.
String depth = "rasterFromHexWKB('0100000100000000000000F03F000000000000F0BF0000000000000000"
+ "000000000000084000000000000000000000000000000000E6100000030003000A000000000000204100"
+ "00A0410000F04100002042000048420000704200008C420000A0420000B442')";
String trip = "tgeompointFromText('SRID=4326;[POINT(0.5 2.5)@2001-01-01, "
+ "POINT(2.5 2.5)@2001-01-02, POINT(0.5 0.5)@2001-01-03]')";
// The clearance of a vessel of draught 8.5, as MobilityDB answers rasterValue(trip,
// depth - 8.5) in its raster regression test.
assertEquals("Interp=Step;[1.5@2001-01-01 00:00:00+00, 11.5@2001-01-01 06:00:00+00, "
+ "21.5@2001-01-01 18:00:00+00, 41.5@2001-01-02 06:00:00+00, "
+ "61.5@2001-01-02 18:00:00+00, 61.5@2001-01-03 00:00:00+00]",
scalar("SELECT asText(rasterValue(" + trip + ", rasterSub(" + depth + ", 8.5)))"));
String read = (String) scalar("SELECT asText(rasterValue(" + trip + ", " + depth + "))");
assertEquals(read, scalar("SELECT asText(rasterValue(" + trip + ", rasterDiv(rasterAdd("
+ depth + ", " + depth + "), 2.0)))"));
assertEquals(read, scalar("SELECT asText(rasterValue(" + trip + ", rasterDiv(rasterMul("
+ depth + ", " + depth + "), " + depth + ")))"));
}
}
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