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

Example 96 with ScalarFunction

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

the class GeoFunctions method stPolygon.

@Description("Returns a Geometry type Polygon object from Well-Known Text representation (WKT)")
@ScalarFunction("ST_Polygon")
@SqlType(GEOMETRY_TYPE_NAME)
public static Slice stPolygon(@SqlType(VARCHAR) Slice input) {
    OGCGeometry geometry = geometryFromText(input);
    validateType("ST_Polygon", geometry, EnumSet.of(POLYGON));
    return serialize(geometry);
}

Example 97 with ScalarFunction

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

the class GeoFunctions method stEndPoint.

@SqlNullable
@Description("Returns the last point of a LINESTRING geometry as a Point")
@ScalarFunction("ST_EndPoint")
@SqlType(GEOMETRY_TYPE_NAME)
public static Slice stEndPoint(@SqlType(GEOMETRY_TYPE_NAME) Slice input) {
    OGCGeometry geometry = deserialize(input);
    validateType("ST_EndPoint", geometry, EnumSet.of(LINE_STRING));
    if (geometry.isEmpty()) {
        return null;
    }
    MultiPath lines = (MultiPath) geometry.getEsriGeometry();
    SpatialReference reference = geometry.getEsriSpatialReference();
    return serialize(createFromEsriGeometry(lines.getPoint(lines.getPointCount() - 1), reference));
}