org.apache.flink.runtime.state

Class KeyGroupRangeOffsets

java.lang.Object

org.apache.flink.runtime.state.KeyGroupRangeOffsets

All Implemented Interfaces:

Serializable, Iterable<Tuple2<Integer,Long>>

public class KeyGroupRangeOffsets
extends Object
implements Iterable<Tuple2<Integer,Long>>, Serializable

This class combines a key-group range with offsets that correspond to the key-groups in the range.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
KeyGroupRangeOffsets(int rangeStart, int rangeEnd) Creates key-group range with offsets from the given start key-group to end key-group.
KeyGroupRangeOffsets(int rangeStart, int rangeEnd, long[] offsets) Creates key-group range with offsets from the given start key-group to end key-group.
KeyGroupRangeOffsets(KeyGroupRange keyGroupRange) Creates key-group range with offsets for the given key-group range, where all offsets are initially zero.
KeyGroupRangeOffsets(KeyGroupRange keyGroupRange, long[] offsets) Creates key-group range with offsets from the given key-group range.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
KeyGroupRangeOffsets	getIntersection(KeyGroupRange keyGroupRange) Returns a key-group range with offsets which is the intersection of the internal key-group range with the given key-group range.
long	getKeyGroupOffset(int keyGroup) Returns the offset for the given key-group.
KeyGroupRange	getKeyGroupRange()
int	hashCode()
Iterator<Tuple2<Integer,Long>>	iterator()
void	setKeyGroupOffset(int keyGroup, long offset) Sets the offset for the given key-group.
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

KeyGroupRangeOffsets

public KeyGroupRangeOffsets(KeyGroupRange keyGroupRange,
                            long[] offsets)

Creates key-group range with offsets from the given key-group range. The order of given offsets must be aligned with respect to the key-groups in the range.

Parameters:

keyGroupRange - The range of key-groups.

offsets - The aligned array of offsets for the given key-groups.

KeyGroupRangeOffsets

public KeyGroupRangeOffsets(int rangeStart,
                            int rangeEnd,
                            long[] offsets)

Creates key-group range with offsets from the given start key-group to end key-group. The order of given offsets must be aligned with respect to the key-groups in the range.

Parameters:

rangeStart - Start key-group of the range (inclusive)

rangeEnd - End key-group of the range (inclusive)

offsets - The aligned array of offsets for the given key-groups.

KeyGroupRangeOffsets

public KeyGroupRangeOffsets(int rangeStart,
                            int rangeEnd)

Creates key-group range with offsets from the given start key-group to end key-group. All offsets are initially zero.

Parameters:

rangeStart - Start key-group of the range (inclusive)

rangeEnd - End key-group of the range (inclusive)

KeyGroupRangeOffsets

public KeyGroupRangeOffsets(KeyGroupRange keyGroupRange)

Creates key-group range with offsets for the given key-group range, where all offsets are initially zero.

Parameters:

keyGroupRange - The range of key-groups.

Method Detail

getKeyGroupOffset

public long getKeyGroupOffset(int keyGroup)

Returns the offset for the given key-group. The key-group must be contained in the range.

Parameters:

keyGroup - Key-group for which we query the offset. Key-group must be contained in the range.

Returns:

The offset for the given key-group which must be contained in the range.

setKeyGroupOffset

public void setKeyGroupOffset(int keyGroup,
                              long offset)

Sets the offset for the given key-group. The key-group must be contained in the range.

Parameters:

keyGroup - Key-group for which we set the offset. Must be contained in the range.

offset - Offset for the key-group.

getIntersection

public KeyGroupRangeOffsets getIntersection(KeyGroupRange keyGroupRange)

Returns a key-group range with offsets which is the intersection of the internal key-group range with the given key-group range.

Parameters:

keyGroupRange - Key-group range to intersect with the internal key-group range.

Returns:

The key-group range with offsets for the intersection of the internal key-group range with the given key-group range.

getKeyGroupRange

public KeyGroupRange getKeyGroupRange()

iterator

public Iterator<Tuple2<Integer,Long>> iterator()

Specified by:

iterator in interface Iterable<Tuple2<Integer,Long>>

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