edu.iu.dsc.tws.api.dataset

Class EmptyDataObject

java.lang.Object

edu.iu.dsc.tws.api.dataset.EmptyDataObject

All Implemented Interfaces:

DataObject, java.io.Serializable

public final class EmptyDataObject
extends java.lang.Object
implements DataObject

See Also:

Serialized Form

Method Summary

Modifier and Type	Method and Description
void	addPartition(DataPartition partition) Add a partition to the data object
java.lang.String	getID() ID of the data object.
static DataObject	getInstance()
DataPartition	getPartition(int partitionId) Get the partition with the specific partition id
int	getPartitionCount() Get the number of partitions currently in the DataObject
DataPartition[]	getPartitions() Get the list of partitions for a process

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface edu.iu.dsc.tws.api.dataset.DataObject

getAnyPartition, getLowestPartition

Method Detail

addPartition

public void addPartition(DataPartition partition)

Description copied from interface: DataObject

Add a partition to the data object

Specified by:

addPartition in interface DataObject

Parameters:

partition - the partition

getPartitions

public DataPartition[] getPartitions()

Description copied from interface: DataObject

Get the list of partitions for a process

Specified by:

getPartitions in interface DataObject

Returns:

the partitions

getPartition

public DataPartition getPartition(int partitionId)

Description copied from interface: DataObject

Get the partition with the specific partition id

Specified by:

getPartition in interface DataObject

Parameters:

partitionId - partition id

Returns:

DataPartition

getPartitionCount

public int getPartitionCount()

Description copied from interface: DataObject

Get the number of partitions currently in the DataObject

Specified by:

getPartitionCount in interface DataObject

Returns:

the number of partitions

getID

public java.lang.String getID()

Description copied from interface: DataObject

ID of the data object. The ID needs to be deterministic

Specified by:

getID in interface DataObject

Returns:

ID

getInstance

public static DataObject getInstance()