org.petuum.jbosen.row.long_

Class SparseLongRow

java.lang.Object

org.petuum.jbosen.row.long_.LongColumnMap

org.petuum.jbosen.row.long_.SparseLongColumnMap

org.petuum.jbosen.row.long_.SparseLongRow

All Implemented Interfaces:

LongRow, Row

public class SparseLongRow
extends SparseLongColumnMap
implements LongRow

This implementation of LongRow 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 DenseLongRow.

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
SparseLongRow	getCopy() Returns a deep copy of this row.
void	inc(RowUpdate rowUpdate) Increment this row 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_.LongRow

clear, get, inc, iterator, set

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

serialize

Constructor Detail

SparseLongRow

public SparseLongRow()

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

SparseLongRow

public SparseLongRow(SparseLongRow other)

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

Parameters:

other - object to construct a deep copy of.

SparseLongRow

public SparseLongRow(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 SparseLongRow getCopy()

Returns a deep copy of this row.

Returns:

deep copy of this row.

inc

public void inc(RowUpdate rowUpdate)

Increment this row using a RowUpdate object.

Specified by:

inc in interface Row

Parameters:

rowUpdate - the RowUpdate object to apply to this row.