org.apache.ignite.internal.processors.cache.distributed.dht.topology

Class GridDhtPartitionsReservation

java.lang.Object

org.apache.ignite.internal.processors.cache.distributed.dht.topology.GridDhtPartitionsReservation

All Implemented Interfaces:

GridReservable

public class GridDhtPartitionsReservation
extends Object
implements GridReservable

Reservation mechanism for multiple partitions allowing to do a reservation in one operation.

Constructor Summary

Constructors

Constructor and Description
GridDhtPartitionsReservation(AffinityTopologyVersion topVer, GridCacheContext<?,?> cctx, Object appKey)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
int	hashCode()
boolean	invalidate() If returns true this reservation object becomes invalid and partitions can be evicted or at least cleared.
void	onPublish(CI1<GridDhtPartitionsReservation> unpublish) Must be called when this reservation is published.
boolean	register(Collection<? extends GridReservable> parts) Registers all the given partitions for this reservation.
void	release() Releases all the registered partitions.
boolean	reserve() Reserves all the registered partitions.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

GridDhtPartitionsReservation

public GridDhtPartitionsReservation(AffinityTopologyVersion topVer,
                                    GridCacheContext<?,?> cctx,
                                    Object appKey)

Parameters:

topVer - AffinityTopologyVersion version.

cctx - Cache context.

appKey - Application key for reservation.

Method Detail

register

public boolean register(Collection<? extends GridReservable> parts)

Registers all the given partitions for this reservation.

Parameters:

parts - Partitions.

Returns:

true If registration succeeded and this reservation can be published.

onPublish

public void onPublish(CI1<GridDhtPartitionsReservation> unpublish)

Must be called when this reservation is published.

Parameters:

unpublish - Closure to unpublish this reservation when it will become invalid.

reserve

public boolean reserve()

Reserves all the registered partitions.

Specified by:

reserve in interface GridReservable

Returns:

true If succeeded.

release

public void release()

Releases all the registered partitions.

Specified by:

release in interface GridReservable

invalidate

public boolean invalidate()

If returns true this reservation object becomes invalid and partitions can be evicted or at least cleared. Also this means that after returning true here method reserve() can not return true anymore.

Returns:

true If this reservation was successfully invalidated because it was not reserved and partitions can be evicted.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object