Package org.infinispan.container.entries

Interface MVCCEntry<K,V>

All Superinterfaces:

CacheEntry<K,V>, Cloneable, Map.Entry<K,V>, MetadataAware

All Known Implementing Classes:

ReadCommittedEntry, RepeatableReadEntry, VersionedRepeatableReadEntry

public interface MVCCEntry<K,V>
extends CacheEntry<K,V>

An entry that can be safely copied when updates are made, to provide MVCC semantics

Since:

4.0

Author:

Manik Surtani

Method Summary

Modifier and Type	Method	Description
MVCCEntry<K,V>	clone()
Metadata	getOldMetadata()
V	getOldValue()
default boolean	isCommitted()
boolean	isExpired()	Returns whether this entry was marked as being expired or not
default boolean	isLoaded()
default boolean	isRead()	Check is this entry as loaded from the cache (as opposed to generated by the application using write-only command), mostly for purposes of the write skew check.
boolean	isSkipSharedStore()
void	resetCurrentValue()	Reset the current value of the entry to the value before the command was executed the first time.
void	setChanged(boolean isChanged)
default void	setCommitted()	Mark this context-entry as already committed to the DataContainer.
void	setExpired(boolean expired)	Marks this entry as being expired.
default void	setLoaded(boolean loaded)
default void	setRead()	Mark that this entry was loaded from the cache (as opposed to generated by the application using write-only command), mostly for purposes of the write skew check.
void	setSkipSharedStore()
void	updatePreviousValue()	Update the previous value of the entry - set it to current value.

Methods inherited from interface org.infinispan.container.entries.CacheEntry

commit, getCreated, getInternalMetadata, getKey, getLastUsed, getLifespan, getMaxIdle, getValue, isChanged, isCreated, isEvicted, isNull, isRemoved, setCreated, setCreated, setEvicted, setInternalMetadata, setLastUsed, setRemoved, setSkipLookup, setValue, skipLookup

Methods inherited from interface java.util.Map.Entry

equals, hashCode

Methods inherited from interface org.infinispan.container.entries.metadata.MetadataAware

getMetadata, setMetadata

Method Details

setChanged

void setChanged(boolean isChanged)

Specified by:

setChanged in interface CacheEntry<K,V>

setExpired

void setExpired(boolean expired)

Marks this entry as being expired. This is a special form of removal.

Parameters:

expired - whether or not this entry should be expired

isExpired

boolean isExpired()

Returns whether this entry was marked as being expired or not

Returns:

whether expired has been set

resetCurrentValue

void resetCurrentValue()

Reset the current value of the entry to the value before the command was executed the first time. This is invoked before the command is retried.

updatePreviousValue

void updatePreviousValue()

Update the previous value of the entry - set it to current value. This is invoked when the command is successfully finished (there won't be any more retries) or when the value was updated from external source.

getOldValue

V getOldValue()

Returns:

The previous value.

getOldMetadata

Metadata getOldMetadata()

Returns:

The previous metadata.

setRead

default void setRead()

Mark that this entry was loaded from the cache (as opposed to generated by the application using write-only command), mostly for purposes of the write skew check.

isRead

default boolean isRead()

Check is this entry as loaded from the cache (as opposed to generated by the application using write-only command), mostly for purposes of the write skew check.

setCommitted

default void setCommitted()

Mark this context-entry as already committed to the DataContainer.

isCommitted

default boolean isCommitted()

Returns:

True if this context entry has been committed to the DataContainer

isLoaded

default boolean isLoaded()

Returns:

True if we've checked persistence for presence of this entry.

setLoaded

default void setLoaded(boolean loaded)

isSkipSharedStore

boolean isSkipSharedStore()

Returns:

True if this entry should non be written to shared persistence

setSkipSharedStore

void setSkipSharedStore()

clone

MVCCEntry<K,V> clone()

Specified by:

clone in interface CacheEntry<K,V>