org.infinispan.container.entries

Class NullMarkerEntryForRemoval

java.lang.Object

org.infinispan.container.entries.ReadCommittedEntry

org.infinispan.container.entries.RepeatableReadEntry

org.infinispan.container.entries.NullMarkerEntryForRemoval

All Implemented Interfaces:

Map.Entry<Object,Object>, CacheEntry, MVCCEntry, Versioned

Direct Known Subclasses:

NullMarkerEntry

public class NullMarkerEntryForRemoval
extends RepeatableReadEntry

A null entry that is read in for removal

Since:

4.0

Author:

Manik Surtani

Nested Class Summary

Nested classes/interfaces inherited from class org.infinispan.container.entries.ReadCommittedEntry

ReadCommittedEntry.Flags

Field Summary

Fields inherited from class org.infinispan.container.entries.ReadCommittedEntry

flags, key, oldValue, value

Constructor Summary

Constructors

Constructor and Description
NullMarkerEntryForRemoval(Object key, EntryVersion version)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	isLockPlaceholder()
boolean	isNull() Tests whether the entry represents a null value, typically used for repeatable read.
boolean	isRemoved()
boolean	isValid()
void	setLockPlaceholder(boolean placeholder) Marks an entry as a lock placeholder

Methods inherited from class org.infinispan.container.entries.RepeatableReadEntry

copyForUpdate, performLocalWriteSkewCheck

Methods inherited from class org.infinispan.container.entries.ReadCommittedEntry

commit, getKey, getLifespan, getMaxIdle, getValue, getVersion, isChanged, isCreated, isEvicted, isFlagSet, rollback, setChanged, setCreated, setEvicted, setFlag, setLifespan, setMaxIdle, setRemoved, setValid, setValue, setVersion, toString, undelete, unsetFlag

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map.Entry

equals, hashCode

Constructor Detail

NullMarkerEntryForRemoval

public NullMarkerEntryForRemoval(Object key,
                         EntryVersion version)

Method Detail

isNull

public final boolean isNull()

Description copied from interface: CacheEntry

Tests whether the entry represents a null value, typically used for repeatable read.

Specified by:

isNull in interface CacheEntry

Overrides:

isNull in class ReadCommittedEntry

Returns:

always returns true

isRemoved

public final boolean isRemoved()

Specified by:

isRemoved in interface CacheEntry

Overrides:

isRemoved in class ReadCommittedEntry

Returns:

always returns true so that any get commands, upon getting this entry, will ignore the entry as though it were removed.

isValid

public final boolean isValid()

Specified by:

isValid in interface CacheEntry

Overrides:

isValid in class ReadCommittedEntry

Returns:

always returns true so that any get commands, upon getting this entry, will ignore the entry as though it were invalid.

isLockPlaceholder

public boolean isLockPlaceholder()

Specified by:

isLockPlaceholder in interface CacheEntry

Overrides:

isLockPlaceholder in class ReadCommittedEntry

Returns:

true if this entry is a placeholder for the sake of acquiring a lock; and false if it is a real entry.

setLockPlaceholder

public void setLockPlaceholder(boolean placeholder)

Description copied from interface: MVCCEntry

Marks an entry as a lock placeholder

Specified by:

setLockPlaceholder in interface MVCCEntry

Overrides:

setLockPlaceholder in class ReadCommittedEntry

Parameters:

placeholder - if true, the entry is marked as a lock placeholder. If false, the entry is un-marked as a placeholder.