Package com.nt.udc.flexibleAggregator.table

Class FlexibleAggrTable

java.lang.Object

com.nt.udc.flexibleAggregator.table.FlexibleAggrTable

public class FlexibleAggrTable
extends Object

Currently, this class handles the table functionality of an aggregator. For the most part, this is just table-related procedures, including access, initialization and shutdown.

Field Summary

Fields

Modifier and Type	Field	Description
static String	tableName

Constructor Summary

Constructors

Constructor	Description
FlexibleAggrTable(LoggerIfc loggerObj, Factory factory, File scratchDir, int compressionThresholdSetting, String fileNameExtender)	Creates the base object.

Method Summary

Modifier and Type	Method	Description
void	close()	Closes the table
boolean	containsKey(FlexibleNARKey key)	Returns whether a given key exists in the table
NAR	get(FlexibleNARKey key)	Don't use this.
boolean	isHealthy()
Enumeration	keys()	Keys of all the records in the table
void	open()	Opens the table.
void	put(FlexibleNARKey key, NAR record)	Puts a NAR into the table, according to the given key.
NAR	remove(FlexibleNARKey key)	Removes a NAR from the table, and returns the element at the key.
Object	removeDelayedNARParsing(FlexibleNARKey key)	Clone of remove(), but with delayed NAR Parsing.
void	shutdown()	Shuts down this object.

Methods inherited from class java.lang.Object

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

Field Details

tableName

public static String tableName

Constructor Details

FlexibleAggrTable

public FlexibleAggrTable(LoggerIfc loggerObj,
 Factory factory,
 File scratchDir,
 int compressionThresholdSetting,
 String fileNameExtender)

Creates the base object.

Method Details

open

public void open()

Opens the table.

close

public void close()

Closes the table

shutdown

public void shutdown()

Shuts down this object.

put

public void put(FlexibleNARKey key,
 NAR record)

Puts a NAR into the table, according to the given key.

Parameters:

key - Index of the NAR

record - NAR to put

remove

public NAR remove(FlexibleNARKey key)

Removes a NAR from the table, and returns the element at the key. Only ever allow returning the NAR when removing, otherwise there would be synchronization issues.

Parameters:

key - Key of the record to remove

Returns:

record at the key, or NULL if no record was found

removeDelayedNARParsing

public Object removeDelayedNARParsing(FlexibleNARKey key)

Clone of remove(), but with delayed NAR Parsing. For use by MTAggrDispatcher ONLY.

Parameters:

key -

Returns:

whatever FileHashTable.removeDelayedNARParsing returns, either NAR or ByteArray object.

keys

public Enumeration keys()

Keys of all the records in the table

Returns:

Enumeration of all the keys

containsKey

public boolean containsKey(FlexibleNARKey key)

Returns whether a given key exists in the table

Parameters:

key - Key to look for

Returns:

true, if the key exists

isHealthy

public boolean isHealthy()

get

public NAR get(FlexibleNARKey key)

Don't use this. Use remove*() for normal operations. (MXAggrDispatcher is using this for specific data recovery scenerios...)

Parameters:

key -

Returns: