Package org.apache.druid.frame.key

Enum KeyOrder

java.lang.Object
java.lang.Enum<KeyOrder>
org.apache.druid.frame.key.KeyOrder
All Implemented Interfaces:
Serializable, Comparable<KeyOrder>
public enum KeyOrder extends Enum<KeyOrder>
Ordering associated with a KeyColumn.

  • Enum Constant Details

    • NONE

      public static final KeyOrder NONE
      Not ordered. Possible if the key is used only for non-sorting purposes, such as hashing without sorting.

    • ASCENDING

      public static final KeyOrder ASCENDING
      Ordered ascending. Note that sortable key order does not necessarily mean that we are using range-based partitioning. We may be using hash-based partitioning along with each partition internally being sorted by a key.

    • DESCENDING

      public static final KeyOrder DESCENDING
      Ordered descending. Note that sortable key order does not necessarily mean that we are using range-based partitioning. We may be using hash-based partitioning along with each partition internally being sorted by a key.

  • Method Details

    • values

      public static KeyOrder[] values()
      Returns an array containing the constants of this enum type, in the order they are declared.
      Returns:
      an array containing the constants of this enum type, in the order they are declared

    • valueOf

      public static KeyOrder 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

    • sortable

      public boolean sortable()