io.druid.timeline.partition

Class SingleElementPartitionChunk<T>

java.lang.Object

io.druid.timeline.partition.SingleElementPartitionChunk<T>

All Implemented Interfaces:

PartitionChunk<T>, Comparable<PartitionChunk<T>>

public class SingleElementPartitionChunk<T>
extends Object
implements PartitionChunk<T>

Constructor Summary

Constructors

Constructor and Description
SingleElementPartitionChunk(T element)

Method Summary

Modifier and Type	Method and Description
boolean	abuts(PartitionChunk<T> tPartitionChunk) Determines if this PartitionChunk abuts another PartitionChunk.
int	compareTo(PartitionChunk<T> chunk) The ordering of PartitionChunks is determined entirely by the partition boundaries and has nothing to do with the object.
boolean	equals(Object o)
int	getChunkNumber() Returns the partition chunk number of this PartitionChunk.
T	getObject() Returns the payload, generally an object that can be used to perform some action against the shard.
int	hashCode()
boolean	isEnd() Returns true if this chunk is the end of the partition.
boolean	isStart() Returns true if this chunk is the beginning of the partition.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

SingleElementPartitionChunk

public SingleElementPartitionChunk(T element)

Method Detail

getObject

public T getObject()

Description copied from interface: PartitionChunk

Returns the payload, generally an object that can be used to perform some action against the shard.

Specified by:

getObject in interface PartitionChunk<T>

Returns:

the payload

abuts

public boolean abuts(PartitionChunk<T> tPartitionChunk)

Description copied from interface: PartitionChunk

Determines if this PartitionChunk abuts another PartitionChunk. A sequence of abutting PartitionChunks should start with an object where isStart() == true and eventually end with an object where isEnd() == true.

Specified by:

abuts in interface PartitionChunk<T>

Parameters:

tPartitionChunk - input chunk

Returns:

true if this chunk abuts the input chunk

isStart

public boolean isStart()

Description copied from interface: PartitionChunk

Returns true if this chunk is the beginning of the partition. Most commonly, that means it represents the range [-infinity, X) for some concrete X.

Specified by:

isStart in interface PartitionChunk<T>

Returns:

true if the chunk is the beginning of the partition

isEnd

public boolean isEnd()

Description copied from interface: PartitionChunk

Returns true if this chunk is the end of the partition. Most commonly, that means it represents the range [X, infinity] for some concrete X.

Specified by:

isEnd in interface PartitionChunk<T>

Returns:

true if the chunk is the beginning of the partition

getChunkNumber

public int getChunkNumber()

Description copied from interface: PartitionChunk

Returns the partition chunk number of this PartitionChunk. I.e. if there are 4 partitions in total and this is the 3rd partition, it will return 2

Specified by:

getChunkNumber in interface PartitionChunk<T>

Returns:

the sequential numerical id of this partition chunk

compareTo

public int compareTo(PartitionChunk<T> chunk)

The ordering of PartitionChunks is determined entirely by the partition boundaries and has nothing to do with the object. Thus, if there are two SingleElementPartitionChunks, they are equal because they both represent the full partition space. SingleElementPartitionChunks are currently defined as less than every other type of PartitionChunk. There is no good reason for it, nor is there a bad reason, that's just the way it is. This is subject to change.

Specified by:

compareTo in interface Comparable<PartitionChunk<T>>

Parameters:

chunk -

Returns:

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