org.egothor.slotter
Class SlotMap

java.lang.Object
  org.egothor.slotter.SlotMap

public class SlotMap
extends java.lang.Object

This object represents some map of slots (Barrels).

Author:

galambos, Jakub Podhorny

Constructor Summary

SlotMap(java.lang.String filename, int versionID)

Method Summary

Slot	addUnderControl(int slot)
void	assignNewListener()
void	destroy(Slot slot)
void	destroySlots()
Sequence<Barrel>	elements()
TransactionLog	execute()
Barrel	get(int slot)
Barrel	get(Slot slot)
java.lang.String	getFilename()
int	getRootVersionID()
long	getUid()
static SlotMap	open(java.lang.String filename, int versionID) Returns the slotter on the filename (canonical form of the filename will be used).
Slot	pullOverBarrel(BarrelReader reader, java.lang.String srcLocation) Pulls over (moves) srcLocation barrel into this databes.
boolean	removeDoc(long gid, int slot, long lid)
TransactionLog	rollback()
Slot	save(BarrelReader reader)
void	setListenSlotMap(ListenSlotMap listener)
void	softDestroy(Slot slot)

Methods inherited from class java.lang.Object

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

Constructor Detail

SlotMap

public SlotMap(java.lang.String filename,
               int versionID)

Method Detail

setListenSlotMap

public void setListenSlotMap(ListenSlotMap listener)

open

public static SlotMap open(java.lang.String filename,
                           int versionID)
                    throws java.io.IOException

Returns the slotter on the filename (canonical form of the filename will be used). If the versionID is a positive integer and it differs from the versionID of the slotter available, null value is returned. It also assigns a new listener.

Throws:

java.io.IOException

See Also:

getRootVersionID()

assignNewListener

public void assignNewListener()
                       throws java.io.IOException

Throws:

java.io.IOException

getRootVersionID

public int getRootVersionID()

getUid

public long getUid()

getFilename

public java.lang.String getFilename()

addUnderControl

public Slot addUnderControl(int slot)

elements

public Sequence<Barrel> elements()

get

public Barrel get(int slot)

get

public Barrel get(Slot slot)

destroy

public void destroy(Slot slot)

softDestroy

public void softDestroy(Slot slot)

save

public Slot save(BarrelReader reader)

pullOverBarrel

public Slot pullOverBarrel(BarrelReader reader,
                           java.lang.String srcLocation)

Pulls over (moves) srcLocation barrel into this databes.

Parameters:

reader - Reader that is being pulled over

srcLocation - Reader's location that is being pulled over

Returns:

destroySlots

public void destroySlots()

rollback

public TransactionLog rollback()

execute

public TransactionLog execute()

removeDoc

public boolean removeDoc(long gid,
                         int slot,
                         long lid)