edu.snu.coral.runtime.common.data

Interface KeyRange<K extends Serializable>

Type Parameters:

K - the type of key to assign for each partition.

All Superinterfaces:

Serializable

All Known Implementing Classes:

HashRange

public interface KeyRange<K extends Serializable>
extends Serializable

Represents the key range of data partitions within a block.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o) This method should be overridden for KeyRange comparisons.
int	hashCode() This method should be overridden for KeyRange comparisons.
boolean	includes(K key)
boolean	isAll()
K	rangeBeginInclusive()
K	rangeEndExclusive()
String	toString() This method should be overridden for a readable representation of KeyRange.

Method Detail

isAll

boolean isAll()

Returns:

whether this instance represents the entire range or not.

rangeBeginInclusive

K rangeBeginInclusive()

Returns:

the beginning of this range (inclusive).

rangeEndExclusive

K rangeEndExclusive()

Returns:

the end of this range (exclusive).

includes

boolean includes(K key)

Parameters:

key - the value to check

Returns:

true if this key range includes the specified value, false otherwise

toString

String toString()

This method should be overridden for a readable representation of KeyRange. The generic type K should override Object's toString() as well.

Overrides:

toString in class Object

equals

boolean equals(Object o)

This method should be overridden for KeyRange comparisons.

Overrides:

equals in class Object

hashCode

int hashCode()

This method should be overridden for KeyRange comparisons.

Overrides:

hashCode in class Object