org.petuum.jbosen.row.long_

Class LongColumnMap

java.lang.Object

org.petuum.jbosen.row.long_.LongColumnMap

Direct Known Subclasses:

DenseLongColumnMap, SparseLongColumnMap

public abstract class LongColumnMap
extends java.lang.Object

This abstract class defines the interface for a structure that contains columns of long primitive types. The access is similar to a map with column IDs as keys and longs as values. The built-in row and row update types are maps of this type.

Constructor Summary

Constructors

Constructor and Description
LongColumnMap()

Method Summary

Modifier and Type	Method and Description
abstract void	clear() Resets all values.
abstract boolean	contains(int columnId) Check if this map contains the specified column.
abstract long	get(int columnId) Returns the value associated with a particular column ID.
abstract void	inc(int columnId, long value) Increments the current value associated with a column ID.
void	incAll(LongColumnMap longColumnMap) Increments by all values in a given LongColumnMap.
abstract LongColumnIterator	iterator() Returns an iterator over the columnId-value pairs contained in this object.
abstract void	set(int columnId, long value) Sets the value associated with a particular column ID.

Methods inherited from class java.lang.Object

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

Constructor Detail

LongColumnMap

public LongColumnMap()

Method Detail

contains

public abstract boolean contains(int columnId)

Check if this map contains the specified column.

Parameters:

columnId - the column ID to check.

Returns:

whether the map contains the given column ID.

get

public abstract long get(int columnId)

Returns the value associated with a particular column ID.

Parameters:

columnId - the column ID.

Returns:

the value associated with columnId.

set

public abstract void set(int columnId,
                         long value)

Sets the value associated with a particular column ID.

Parameters:

columnId - the column ID.

value - the value associated with columnId.

inc

public abstract void inc(int columnId,
                         long value)

Increments the current value associated with a column ID.

Parameters:

columnId - the column ID.

value - the value to increment by.

incAll

public void incAll(LongColumnMap longColumnMap)

Increments by all values in a given LongColumnMap.

Parameters:

longColumnMap - object containing all values to increment by.

clear

public abstract void clear()

Resets all values.

iterator

public abstract LongColumnIterator iterator()

Returns an iterator over the columnId-value pairs contained in this object.

Returns:

an iterator object.