Examples with ScalarFunction io.prestosql.spi.function.ScalarFunction used on opensource projects

Example 26 with ScalarFunction

use of io.prestosql.spi.function.ScalarFunction in project hetu-core by openlookeng.

the class GeoFunctions method stDifference.

@Description("Returns the Geometry value that represents the point set difference of two geometries")
@ScalarFunction("ST_Difference")
@SqlType(GEOMETRY_TYPE_NAME)
public static Slice stDifference(@SqlType(GEOMETRY_TYPE_NAME) Slice left, @SqlType(GEOMETRY_TYPE_NAME) Slice right) {
    OGCGeometry leftGeometry = deserialize(left);
    OGCGeometry rightGeometry = deserialize(right);
    verifySameSpatialReference(leftGeometry, rightGeometry);
    return serialize(leftGeometry.difference(rightGeometry));
}

Example 27 with ScalarFunction

use of io.prestosql.spi.function.ScalarFunction in project hetu-core by openlookeng.

the class GeoFunctions method stDisjoint.

@SqlNullable
@Description("Returns TRUE if the Geometries do not spatially intersect - if they do not share any space together")
@ScalarFunction("ST_Disjoint")
@SqlType(BOOLEAN)
public static Boolean stDisjoint(@SqlType(GEOMETRY_TYPE_NAME) Slice left, @SqlType(GEOMETRY_TYPE_NAME) Slice right) {
    if (!envelopes(left, right, Envelope::intersect)) {
        return true;
    }
    OGCGeometry leftGeometry = deserialize(left);
    OGCGeometry rightGeometry = deserialize(right);
    verifySameSpatialReference(leftGeometry, rightGeometry);
    return leftGeometry.disjoint(rightGeometry);
}

Example 28 with ScalarFunction

use of io.prestosql.spi.function.ScalarFunction in project hetu-core by openlookeng.

the class GeoFunctions method stIsRing.

@SqlNullable
@Description("Returns TRUE if and only if the line is closed and simple")
@ScalarFunction("ST_IsRing")
@SqlType(BOOLEAN)
public static Boolean stIsRing(@SqlType(GEOMETRY_TYPE_NAME) Slice input) {
    OGCGeometry geometry = deserialize(input);
    validateType("ST_IsRing", geometry, EnumSet.of(LINE_STRING));
    OGCLineString line = (OGCLineString) geometry;
    return line.isClosed() && line.isSimple();
}

Example 29 with ScalarFunction

use of io.prestosql.spi.function.ScalarFunction in project hetu-core by openlookeng.

the class GeoFunctions method stCrosses.

@SqlNullable
@Description("Returns TRUE if the supplied geometries have some, but not all, interior points in common")
@ScalarFunction("ST_Crosses")
@SqlType(BOOLEAN)
public static Boolean stCrosses(@SqlType(GEOMETRY_TYPE_NAME) Slice left, @SqlType(GEOMETRY_TYPE_NAME) Slice right) {
    if (!envelopes(left, right, Envelope::intersect)) {
        return false;
    }
    OGCGeometry leftGeometry = deserialize(left);
    OGCGeometry rightGeometry = deserialize(right);
    verifySameSpatialReference(leftGeometry, rightGeometry);
    return leftGeometry.crosses(rightGeometry);
}

Example 30 with ScalarFunction

use of io.prestosql.spi.function.ScalarFunction in project hetu-core by openlookeng.

the class GeoFunctions method lineLocatePoint.

@SqlNullable
@Description("Returns a float between 0 and 1 representing the location of the closest point on the LineString to the given Point, as a fraction of total 2d line length.")
@ScalarFunction("line_locate_point")
@SqlType(DOUBLE)
public static Double lineLocatePoint(@SqlType(GEOMETRY_TYPE_NAME) Slice lineSlice, @SqlType(GEOMETRY_TYPE_NAME) Slice pointSlice) {
    Geometry line = JtsGeometrySerde.deserialize(lineSlice);
    Geometry point = JtsGeometrySerde.deserialize(pointSlice);
    if (line.isEmpty() || point.isEmpty()) {
        return null;
    }
    GeometryType lineType = GeometryType.getForJtsGeometryType(line.getGeometryType());
    if (lineType != GeometryType.LINE_STRING && lineType != GeometryType.MULTI_LINE_STRING) {
        throw new PrestoException(INVALID_FUNCTION_ARGUMENT, format("First argument to line_locate_point must be a LineString or a MultiLineString. Got: %s", line.getGeometryType()));
    }
    GeometryType pointType = GeometryType.getForJtsGeometryType(point.getGeometryType());
    if (pointType != GeometryType.POINT) {
        throw new PrestoException(INVALID_FUNCTION_ARGUMENT, format("Second argument to line_locate_point must be a Point. Got: %s", point.getGeometryType()));
    }
    return new LengthIndexedLine(line).indexOf(point.getCoordinate()) / line.getLength();
}