edu.snu.coral.runtime.common.data

Class HashRange

java.lang.Object

edu.snu.coral.runtime.common.data.HashRange

All Implemented Interfaces:

KeyRange<Integer>, Serializable

public final class HashRange
extends Object
implements KeyRange<Integer>

Descriptor for hash range.

See Also:

Serialized Form

Method Summary

Modifier and Type	Method and Description
static HashRange	all()
boolean	equals(Object o) This method should be overridden for KeyRange comparisons.
int	hashCode() This method should be overridden for KeyRange comparisons.
boolean	includes(Integer i)
boolean	isAll()
static HashRange	of(int rangeStartInclusive, int rangeEndExclusive)
Integer	rangeBeginInclusive()
Integer	rangeEndExclusive()
String	toString() This method should be overridden for a readable representation of KeyRange.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Method Detail

all

public static HashRange all()

Returns:

Gets a hash range descriptor representing the whole data from a partition.

of

public static HashRange of(int rangeStartInclusive,
                           int rangeEndExclusive)

Parameters:

rangeStartInclusive - the start of the range (inclusive)

rangeEndExclusive - the end of the range (exclusive)

Returns:

A hash range descriptor representing [rangeBeginInclusive, rangeEndExclusive)

isAll

public boolean isAll()

Specified by:

isAll in interface KeyRange<Integer>

Returns:

whether this hash range descriptor represents the whole data or not.

rangeBeginInclusive

public Integer rangeBeginInclusive()

Specified by:

rangeBeginInclusive in interface KeyRange<Integer>

Returns:

the beginning of this range (inclusive).

rangeEndExclusive

public Integer rangeEndExclusive()

Specified by:

rangeEndExclusive in interface KeyRange<Integer>

Returns:

the end of the range (exclusive)

includes

public boolean includes(Integer i)

Specified by:

includes in interface KeyRange<Integer>

Parameters:

i - the value to test

Returns:

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

toString

public String toString()

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

Specified by:

toString in interface KeyRange<Integer>

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Description copied from interface: KeyRange

This method should be overridden for KeyRange comparisons.

Specified by:

equals in interface KeyRange<Integer>

Overrides:

equals in class Object

hashCode

public int hashCode()

Description copied from interface: KeyRange

This method should be overridden for KeyRange comparisons.

Specified by:

hashCode in interface KeyRange<Integer>

Overrides:

hashCode in class Object