org.dizitart.no2.store

Class NitriteMVStore

java.lang.Object

org.dizitart.no2.store.NitriteMVStore

All Implemented Interfaces:

NitriteStore

public final class NitriteMVStore
extends java.lang.Object
implements NitriteStore

A MVStore backed NitriteStore implementation.

Since:

1.0

Constructor Summary

Constructors

Constructor and Description
NitriteMVStore(org.h2.mvstore.MVStore store) Instantiates a new NitriteMVStore.

Method Summary

Modifier and Type	Method and Description
void	close() Closes the file and the store.
void	closeImmediately() Closes the file and the store, without writing anything.
void	commit() Commits the changes.
void	compactMoveChunks() Compacts the store by moving all chunks next to each other.
java.util.Set<java.lang.String>	getMapNames() Gets the set of all map names.
boolean	hasMap(java.lang.String mapName) Checks whether a given map exists in the store.
boolean	hasUnsavedChanges() Checks whether there are any unsaved changes.
boolean	isClosed() Checks whether this store is closed for further modification.
NitriteMap<java.lang.String,Attributes>	metaMap() Gets the metadata of all NitriteMaps.
<Key,Value> NitriteMap<Key,Value>	openMap(java.lang.String mapName) Opens a NitriteMap with the default settings.
<Key,Value> void	removeMap(NitriteMap<Key,Value> map) Removes a map from the store.

Methods inherited from class java.lang.Object

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

Constructor Detail

NitriteMVStore

public NitriteMVStore(org.h2.mvstore.MVStore store)

Instantiates a new NitriteMVStore.

Parameters:

store - the store

Method Detail

getMapNames

public java.util.Set<java.lang.String> getMapNames()

Description copied from interface: NitriteStore

Gets the set of all map names.

Specified by:

getMapNames in interface NitriteStore

Returns:

the set of names.

hasUnsavedChanges

public boolean hasUnsavedChanges()

Description copied from interface: NitriteStore

Checks whether there are any unsaved changes.

Specified by:

hasUnsavedChanges in interface NitriteStore

Returns:

true if there are any changes; false otherwise.

isClosed

public boolean isClosed()

Description copied from interface: NitriteStore

Checks whether this store is closed for further modification.

Specified by:

isClosed in interface NitriteStore

Returns:

true if closed; false otherwise.

compactMoveChunks

public void compactMoveChunks()

Description copied from interface: NitriteStore

Compacts the store by moving all chunks next to each other.

Specified by:

compactMoveChunks in interface NitriteStore

commit

public void commit()

Description copied from interface: NitriteStore

Commits the changes. For persistent stores, it also writes changes to disk. It does nothing if there are no unsaved changes.

Specified by:

commit in interface NitriteStore

close

public void close()

Description copied from interface: NitriteStore

Closes the file and the store. Unsaved changes are written to disk first.

Specified by:

close in interface NitriteStore

closeImmediately

public void closeImmediately()

Description copied from interface: NitriteStore

Closes the file and the store, without writing anything. This method ignores all errors.

Specified by:

closeImmediately in interface NitriteStore

hasMap

public boolean hasMap(java.lang.String mapName)

Description copied from interface: NitriteStore

Checks whether a given map exists in the store.

Specified by:

hasMap in interface NitriteStore

Parameters:

mapName - the map name

Returns:

true if it exists; false otherwise.

openMap

public <Key,Value> NitriteMap<Key,Value> openMap(java.lang.String mapName)

Description copied from interface: NitriteStore

Opens a NitriteMap with the default settings. The map is automatically create if it does not yet exist. If a map with this name is already open, this map is returned.

Specified by:

openMap in interface NitriteStore

Type Parameters:

Key - the key type

Value - the value type

Parameters:

mapName - the map name

Returns:

the map.

removeMap

public <Key,Value> void removeMap(NitriteMap<Key,Value> map)

Description copied from interface: NitriteStore

Removes a map from the store.

Specified by:

removeMap in interface NitriteStore

Type Parameters:

Key - the key type

Value - the value type

Parameters:

map - the map to remove.

metaMap

public NitriteMap<java.lang.String,Attributes> metaMap()

Description copied from interface: NitriteStore

Gets the metadata of all NitriteMaps.

Specified by:

metaMap in interface NitriteStore

Returns:

meta data of all maps.