Package com.tangosol.io.journal

Class JournalBinaryStore.ClearListener

java.lang.Object

com.tangosol.io.journal.JournalBinaryStore.ClearListener

All Implemented Interfaces:

MultiBinaryLongMap.BinaryLongMapListener, EventListener

Enclosing class:

JournalBinaryStore

protected static class JournalBinaryStore.ClearListener
extends Object
implements MultiBinaryLongMap.BinaryLongMapListener

The ClearListener is used to ensure that entries are removed from the journal when the corresponding keys are cleared from the ticket tree.

Note: this listener directly holds references to the state members of the containing JournalBinaryStore as it could be run during the context of a JournalBinaryStore.dispose() call.

Field Summary

Fields

Modifier and Type	Field	Description
protected AtomicLong	f_atomicSize	The atomic holding the size counter.
protected Journal	f_journal	The Journal.
protected BinaryLongMap	f_tree	The BinaryLongMap mapping keys to journal tickets.

Constructor Summary

Constructors

Constructor	Description
ClearListener(BinaryLongMap blm, Journal journal, AtomicLong atomicSize)	Construct a ClearListener for the specified BinaryLongMap and journal.

Method Summary

Modifier and Type	Method	Description
void	keyAdded(Binary binKey)	A notification that the primary map has added a new Binary/long key/value mapping; this implicitly creates a new key/value mapping in each delegating map, with the value being 0L.
void	keyRemoving(Binary binKey)	A notification that the primary map is removing a Binary/long key/value mapping; this implies that the existing key/value mapping for the same Binary key in each delegating map is also being removed.
void	mapCleared()	A notification that the primary map has been cleared; this implies that all of the existing key/value mappings in each delegating map have also been removed.
void	mapClearing()	A notification that the primary map is about to be cleared; this implies that all of the existing key/value mappings in each delegating map are about to be removed, but that no per-mapping events will be generated in response to those removals.

Methods inherited from class java.lang.Object

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

Field Detail

f_tree

protected final BinaryLongMap f_tree

The BinaryLongMap mapping keys to journal tickets.

f_journal

protected final Journal f_journal

The Journal.

f_atomicSize

protected final AtomicLong f_atomicSize

The atomic holding the size counter.

Constructor Detail

ClearListener

public ClearListener(BinaryLongMap blm,
                     Journal journal,
                     AtomicLong atomicSize)

Construct a ClearListener for the specified BinaryLongMap and journal.

Parameters:

blm - the binary long map holding journal tickets

journal - the journal

atomicSize - the atomic size counter to update

Method Detail

keyAdded

public void keyAdded(Binary binKey)

A notification that the primary map has added a new Binary/long key/value mapping; this implicitly creates a new key/value mapping in each delegating map, with the value being 0L.

Specified by:

keyAdded in interface MultiBinaryLongMap.BinaryLongMapListener

Parameters:

binKey - the key that was added

keyRemoving

public void keyRemoving(Binary binKey)

A notification that the primary map is removing a Binary/long key/value mapping; this implies that the existing key/value mapping for the same Binary key in each delegating map is also being removed.

Specified by:

keyRemoving in interface MultiBinaryLongMap.BinaryLongMapListener

Parameters:

binKey - the key that is being removed

mapClearing

public void mapClearing()

A notification that the primary map is about to be cleared; this implies that all of the existing key/value mappings in each delegating map are about to be removed, but that no per-mapping events will be generated in response to those removals.

Specified by:

mapClearing in interface MultiBinaryLongMap.BinaryLongMapListener

mapCleared

public void mapCleared()

A notification that the primary map has been cleared; this implies that all of the existing key/value mappings in each delegating map have also been removed.

Specified by:

mapCleared in interface MultiBinaryLongMap.BinaryLongMapListener