org.rvpf.store.server.the.memory

Class MemoryBackEnd

Object

MemoryBackEnd

All Implemented Interfaces:

BackEnd

public class MemoryBackEnd
extends Object
implements BackEnd

Memory back-end.

Constructor Summary

Constructors

Constructor and Description
MemoryBackEnd()

Method Summary

Modifier and Type	Method and Description
void	beginUpdates() Begins updates.
void	close() Closes.
void	commit() Commits.
StoreValues	createResponse(StoreValuesQuery query, Optional<Identity> identity) Creates store values for a store query.
int	delete(VersionedValue versionedValue) Deletes a point value.
void	endUpdates() Ends updates.
Archiver	newArchiver() Returns a new archiver.
void	open() Opens.
void	rollback() Rolls back.
boolean	setUp(TheStoreServiceAppImpl theStoreAppImpl) Sets up the back end.
boolean	supportsCount() Asks if the back end supports count.
void	tearDown() Tears down what has been set up.
void	update(VersionedValue versionedValue) Updates a point value.

Methods inherited from class Object

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

Methods inherited from interface BackEnd

purge, supportsPurge

Constructor Detail

MemoryBackEnd

public MemoryBackEnd()

Method Detail

beginUpdates

public void beginUpdates()

Begins updates.

Specified by:

beginUpdates in interface BackEnd

close

public void close()

Closes.

Specified by:

close in interface BackEnd

commit

public void commit()

Commits.

Specified by:

commit in interface BackEnd

createResponse

public StoreValues createResponse(StoreValuesQuery query,
                                  Optional<Identity> identity)

Creates store values for a store query.

Specified by:

createResponse in interface BackEnd

Parameters:

query - The store query.

identity - The optional requesting identity.

Returns:

The store values.

delete

public int delete(VersionedValue versionedValue)

Deletes a point value.

Specified by:

delete in interface BackEnd

Parameters:

versionedValue - The point value to delete.

Returns:

The number of deleted values (0 .. 2).

endUpdates

public void endUpdates()

Ends updates.

Specified by:

endUpdates in interface BackEnd

newArchiver

public Archiver newArchiver()

Returns a new archiver.

Specified by:

newArchiver in interface BackEnd

Returns:

The new archiver.

open

public void open()

Opens.

Specified by:

open in interface BackEnd

rollback

public void rollback()

Rolls back.

Specified by:

rollback in interface BackEnd

setUp

public boolean setUp(TheStoreServiceAppImpl theStoreAppImpl)

Sets up the back end.

Specified by:

setUp in interface BackEnd

Parameters:

theStoreAppImpl - The TheStore application instance.

Returns:

True on success.

supportsCount

public boolean supportsCount()

Asks if the back end supports count.

Specified by:

supportsCount in interface BackEnd

Returns:

True if count is supported.

tearDown

public void tearDown()

Tears down what has been set up.

Specified by:

tearDown in interface BackEnd

update

public void update(VersionedValue versionedValue)

Updates a point value.

Specified by:

update in interface BackEnd

Parameters:

versionedValue - The point value to update.