Package com.datumbox.framework.storage.mapdb

Class MapDBConfiguration

java.lang.Object

com.datumbox.framework.common.storage.abstracts.AbstractFileStorageConfiguration

com.datumbox.framework.storage.mapdb.MapDBConfiguration

All Implemented Interfaces:

Configurable, StorageConfiguration

public class MapDBConfiguration
extends AbstractFileStorageConfiguration

The MapDBConfiguration class is used to configure the MapDB storage and generate new storage engines. MapDB storage uses collections which are backed by file and thus it does not load all the data in memory. The data are stored in MapDB files.

Author:

Vasilis Vryniotis

Field Summary

Fields inherited from class com.datumbox.framework.common.storage.abstracts.AbstractFileStorageConfiguration

directory

Constructor Summary

Constructors

Constructor	Description
MapDBConfiguration()

Method Summary

Modifier and Type	Method	Description
StorageEngine	createStorageEngine(String storageName)
int	getCacheSize()	Getter for the size of items stored in the LRU cache by MapDB.
boolean	isAsynchronous()	Getter for the asynchronous option.
boolean	isCompressed()	Getter for the compression option.
boolean	isHybridized()	Getter for the Hybridized option.
void	load(Properties properties)
void	setAsynchronous(boolean asynchronous)	Setter for the asynchronous option.
void	setCacheSize(int cacheSize)	Setter for the size of items stored in LRU cache by MapDB.
void	setCompressed(boolean compressed)	Setter for the compression option.
void	setHybridized(boolean hybridized)	Setter for the Hybridized option.

Methods inherited from class com.datumbox.framework.common.storage.abstracts.AbstractFileStorageConfiguration

getDirectory, getStorageNameSeparator, setDirectory

Methods inherited from class java.lang.Object

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

Constructor Detail

MapDBConfiguration

public MapDBConfiguration()

Method Detail

createStorageEngine

public StorageEngine createStorageEngine(String storageName)

load

public void load(Properties properties)

getCacheSize

public int getCacheSize()

Getter for the size of items stored in the LRU cache by MapDB.

Returns:

setCacheSize

public void setCacheSize(int cacheSize)

Setter for the size of items stored in LRU cache by MapDB. Set it to 0 to turn off caching.

Parameters:

cacheSize -

isCompressed

public boolean isCompressed()

Getter for the compression option.

Returns:

setCompressed

public void setCompressed(boolean compressed)

Setter for the compression option. If turned on the records will be compressed. It is turned on by default.

Parameters:

compressed -

isHybridized

public boolean isHybridized()

Getter for the Hybridized option.

Returns:

setHybridized

public void setHybridized(boolean hybridized)

Setter for the Hybridized option. If turned on, it will take into account the storage hints provided during Map initialization and it will move more objects out of MapDB and into main Memory. This will lead to significantly improved speed but also higher memory utilization.

Parameters:

hybridized -

isAsynchronous

public boolean isAsynchronous()

Getter for the asynchronous option.

Returns:

setAsynchronous

public void setAsynchronous(boolean asynchronous)

Setter for the asynchronous option. If turned on, it will write the data asynchronously leading to speed improvements.

Parameters:

asynchronous -