Package org.apache.druid.frame.key

Class RowKey

java.lang.Object
org.apache.druid.frame.key.RowKey
public class RowKey extends Object
Represents a specific sorting or hashing key. Instances of this class wrap a byte array in row-based frame format. Following is the layout of the RowKey with n fields Header section byte[1..4] - End of field 1 byte[5..8] - End of field 2 ... byte[4(n-1)..4n] - End of field n Key section byte[headerEnd+1..headerEnd+1+fieldSize1] - Data of field1

  • Method Details

    • wrap

      public static RowKey wrap(byte[] row)
      Create a key from a byte array. The array will be owned by the resulting key object.

    • empty

      public static RowKey empty()

    • array

      public byte[] array()
      Get the backing array for this key (not a copy).

    • longHashCode

      public long longHashCode()

    • equals

      public boolean equals(Object o)
      Overrides:
      equals in class Object

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • estimatedObjectSizeBytes

      public int estimatedObjectSizeBytes()
      Estimate number of bytes taken by the key array. Only returns an estimate and does not account for platform or JVM specific implementation.