Package org.infinispan.container.impl

Class EntryFactoryImpl

java.lang.Object

org.infinispan.container.impl.EntryFactoryImpl

All Implemented Interfaces:

EntryFactory

public class EntryFactoryImpl
extends Object
implements EntryFactory

EntryFactory implementation to be used for optimistic locking scheme.

Since:

5.1

Author:

Mircea Markus

Constructor Summary

Constructors

Constructor	Description
EntryFactoryImpl()

Method Summary

Modifier and Type	Method	Description
protected MVCCEntry<?,?>	createWrappedEntry(Object key, CacheEntry<?,?> cacheEntry)
void	init()
void	wrapEntryForExpired(InvocationContext ctx, Object key, int segment)	Insert an entry that exists in the data container into the context, even if it is expired Doesn't do anything if the key was already wrapped
CompletionStage<Void>	wrapEntryForReading(InvocationContext ctx, Object key, int segment, boolean isOwner, boolean hasLock, CompletionStage<Void> previousStage)	Wraps an entry for reading.
CompletionStage<Void>	wrapEntryForWriting(InvocationContext ctx, Object key, int segment, boolean isOwner, boolean isRead, CompletionStage<Void> previousStage)	Insert an entry that exists in the data container into the context.
void	wrapExternalEntry(InvocationContext ctx, Object key, CacheEntry externalEntry, boolean isRead, boolean isWrite)	Insert an external entry (e.g.

Methods inherited from class java.lang.Object

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

Constructor Detail

EntryFactoryImpl

public EntryFactoryImpl()

Method Detail

init

public void init()

wrapEntryForReading

public final CompletionStage<Void> wrapEntryForReading(InvocationContext ctx,
                                                       Object key,
                                                       int segment,
                                                       boolean isOwner,
                                                       boolean hasLock,
                                                       CompletionStage<Void> previousStage)

Description copied from interface: EntryFactory

Wraps an entry for reading. Usually this is just a raw CacheEntry but certain combinations of isolation levels and the presence of an ongoing JTA transaction may force this to be a proper, wrapped MVCCEntry. The entry is also typically placed in the invocation context.

Specified by:

wrapEntryForReading in interface EntryFactory

Parameters:

ctx - current invocation context

key - key to look up and wrap

segment - segment for the key

isOwner - true if this node is current owner in readCH (or we ignore CH)

hasLock - true if the invoker already has the lock for this key

previousStage - if wrapping can't be performed synchronously, only access the invocation context from another thread after this stage is complete

Returns:

stage that when complete the value should be in the context

wrapEntryForWriting

public CompletionStage<Void> wrapEntryForWriting(InvocationContext ctx,
                                                 Object key,
                                                 int segment,
                                                 boolean isOwner,
                                                 boolean isRead,
                                                 CompletionStage<Void> previousStage)

Description copied from interface: EntryFactory

Insert an entry that exists in the data container into the context. Doesn't do anything if the key was already wrapped.

The returned stage will always be complete if isOwner is false.

Specified by:

wrapEntryForWriting in interface EntryFactory

Parameters:

ctx - current invocation context

key - key to look up and wrap

segment - segment for the key

isOwner - true if this node is current owner in readCH (or we ignore CH)

isRead - true if this operation is expected to read the value of the entry

previousStage - if wrapping can't be performed synchronously, only access the invocation context from another thread after this stage is complete

wrapEntryForExpired

public void wrapEntryForExpired(InvocationContext ctx,
                                Object key,
                                int segment)

Description copied from interface: EntryFactory

Insert an entry that exists in the data container into the context, even if it is expired Doesn't do anything if the key was already wrapped

Specified by:

wrapEntryForExpired in interface EntryFactory

Parameters:

ctx - current invocation context

key - key to look up and wrap

segment - segment for the key

wrapExternalEntry

public void wrapExternalEntry(InvocationContext ctx,
                              Object key,
                              CacheEntry externalEntry,
                              boolean isRead,
                              boolean isWrite)

Description copied from interface: EntryFactory

Insert an external entry (e.g. loaded from a cache loader or from a remote node) into the context.

Specified by:

wrapExternalEntry in interface EntryFactory

Parameters:

ctx - current invocation context

key - key to look up and wrap

externalEntry - the value to be inserted into context

isRead - true if this operation is expected to read the value of the entry

isWrite - if this is executed within a write command

createWrappedEntry

protected MVCCEntry<?,?> createWrappedEntry(Object key,
                                                  CacheEntry<?,?> cacheEntry)