org.petuum.jbosen.table

Class LongTable

java.lang.Object

org.petuum.jbosen.table.LongTable

public final class LongTable
extends java.lang.Object

An object of this class offers a view of a table that contains rows of long values. Methods of this class should only be accessed from registered worker threads. This class is thread-safe and can be shared between different worker threads. Tables of this type should be created with PsTableGroup.createDenseLongTable(int, int, int) or PsTableGroup.createSparseLongTable(int, int), and be retrieved with PsTableGroup.getLongTable(int).

Constructor Summary

Constructors

Constructor and Description
LongTable(ClientTable clientTable) Internal use only.

Method Summary

Modifier and Type	Method and Description
<RowType extends LongRow> RowType	get(int rowId) Retrieve a row from this table.
long	get(int rowId, int columnId) Retrieve a single column from a row in this table.
void	inc(int rowId, int columnId, long update) Add a single value to a given row and column.
void	inc(int rowId, LongRowUpdate rowUpdate) Apply a batch update to an entire row.

Methods inherited from class java.lang.Object

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

Constructor Detail

LongTable

public LongTable(ClientTable clientTable)

Internal use only.

Parameters:

clientTable - internal use only.

Method Detail

get

public <RowType extends LongRow> RowType get(int rowId)

Retrieve a row from this table.

Type Parameters:

RowType - type of the row to cast to before returning.

Parameters:

rowId - ID of the row to retrieve.

Returns:

locally cached copy of the row.

See Also:

Table.get(int)

get

public long get(int rowId,
                int columnId)

Retrieve a single column from a row in this table.

Parameters:

rowId - row ID of the value to retrieve.

columnId - column ID of the value to retrieve.

Returns:

the value at the given row and column.

inc

public void inc(int rowId,
                LongRowUpdate rowUpdate)

Apply a batch update to an entire row.

Parameters:

rowId - ID of the row to update.

rowUpdate - update object to apply.

See Also:

Table.inc(int, RowUpdate)

inc

public void inc(int rowId,
                int columnId,
                long update)

Add a single value to a given row and column.

Parameters:

rowId - row ID of the value to increment.

columnId - column ID of the value to increment.

update - value to increment by.