org.petuum.jbosen.row.long_

Class SparseLongRowUpdate

java.lang.Object

org.petuum.jbosen.row.long_.LongColumnMap

org.petuum.jbosen.row.long_.SparseLongColumnMap

org.petuum.jbosen.row.long_.SparseLongRowUpdate

All Implemented Interfaces:

LongRowUpdate, RowUpdate

public class SparseLongRowUpdate
extends SparseLongColumnMap
implements LongRowUpdate

This implementation of LongRowUpdate assumes a sparse set of columns, ie. column IDs can be any int value. In general, this class is less CPU and memory efficient than DenseLongRowUpdate.

Constructor Summary

Constructors

Constructor and Description
SparseLongRowUpdate() Construct a new object, this object initially contains no columns (ie.
SparseLongRowUpdate(java.nio.ByteBuffer buffer) Construct an object by de-serializing from a ByteBuffer object.
SparseLongRowUpdate(SparseLongRowUpdate other) Copy constructor, constructs a new, deep copy of the argument.

Method Summary

Modifier and Type	Method and Description
SparseLongRowUpdate	getCopy() Returns a deep copy of this row update.
void	inc(RowUpdate rowUpdate) Increment this row update using a RowUpdate object.

Methods inherited from class org.petuum.jbosen.row.long_.SparseLongColumnMap

clear, contains, get, inc, iterator, map, serialize, set, size

Methods inherited from class org.petuum.jbosen.row.long_.LongColumnMap

incAll

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.petuum.jbosen.row.long_.LongRowUpdate

clear, get, inc, iterator, set

Methods inherited from interface org.petuum.jbosen.row.RowUpdate

serialize

Constructor Detail

SparseLongRowUpdate

public SparseLongRowUpdate()

Construct a new object, this object initially contains no columns (ie. all columns are implicitly zero).

SparseLongRowUpdate

public SparseLongRowUpdate(SparseLongRowUpdate other)

Copy constructor, constructs a new, deep copy of the argument.

Parameters:

other - object to construct a deep copy of.

SparseLongRowUpdate

public SparseLongRowUpdate(java.nio.ByteBuffer buffer)

Construct an object by de-serializing from a ByteBuffer object.

Parameters:

buffer - the ByteBuffer containing the serialized data.

Method Detail

getCopy

public SparseLongRowUpdate getCopy()

Returns a deep copy of this row update.

Returns:

deep copy of this row update.

inc

public void inc(RowUpdate rowUpdate)

Increment this row update using a RowUpdate object.

Specified by:

inc in interface RowUpdate

Parameters:

rowUpdate - the RowUpdate object to apply to this row update.