Package org.apache.sedona.core.enums

Enum SpatialJoinOptimizationMode

    • Enum Constant Detail

      • NONE

        public static final SpatialJoinOptimizationMode NONE
        Don't optimize spatial joins, just leave them as they are (cartesian join or broadcast nested loop join).

      • ALL

        public static final SpatialJoinOptimizationMode ALL
        Optimize all spatial joins, even though the join is an equi-join. For example, for a range join like this:

        SELECT * FROM A, B WHERE A.x = B.x AND ST_Contains(A.geom, B.geom)

        The join will still be optimized to a spatial range join.

      • NONEQUI

        public static final SpatialJoinOptimizationMode NONEQUI
        Optimize spatial joins that are not equi-join, this is the default mode.

        For example, for a range join like this:

        SELECT * FROM A, B WHERE A.x = B.x AND ST_Contains(A.geom, B.geom)

        It won't be optimized as a spatial join, since it is an equi-join (with equi-condition: A.x = B.x), and could be executed by a sort-merge join or hash join.

    • Method Detail

      • values

        public static SpatialJoinOptimizationMode[] values()
        Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows: 
        for (SpatialJoinOptimizationMode c : SpatialJoinOptimizationMode.values())
    System.out.println(c);
        Returns:
        an array containing the constants of this enum type, in the order they are declared

      • valueOf

        public static SpatialJoinOptimizationMode valueOf​(String name)
        Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
        Parameters:
        name - the name of the enum constant to be returned.
        Returns:
        the enum constant with the specified name
        Throws:
        IllegalArgumentException - if this enum type has no constant with the specified name
        NullPointerException - if the argument is null