org.ximtec.igesture.storage
Class Db4oStorageEngine

java.lang.Object
  org.ximtec.igesture.storage.DefaultStorageEngine
      org.ximtec.igesture.storage.Db4oStorageEngine

All Implemented Interfaces:

StorageEngine

public class Db4oStorageEngine
extends DefaultStorageEngine

Storage engine implementation for db4o.

Version:

1.0, Dec 2006

Author:

Ueli Kurmann, igesture@uelikurmann.ch, Beat Signer, signer@inf.ethz.ch

Constructor Summary

Db4oStorageEngine(String filename)
Constructs a new db4o engine.

Method Summary

void	commit() Commits the Transaction
void	copyTo(File file)
void	dispose() Disposes the engine.
<T extends DataObject> List<T>	load(Class<T> clazz) Loads a collection of data objects of a given type.
<T extends DataObject> T	load(Class<T> clazz, String id) Loads a data object of a specific type.
void	remove(DataObject dataObject) Removes a data object.
void	store(DataObject dataObject) Stores a data object.
void	update(DataObject dataObject) Updates a data object.

Methods inherited from class org.ximtec.igesture.storage.DefaultStorageEngine

load

Methods inherited from class java.lang.Object

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

Constructor Detail

Db4oStorageEngine

public Db4oStorageEngine(String filename)

Constructs a new db4o engine.

Parameters:

filename - the database file.

Method Detail

dispose

public void dispose()

Description copied from interface: StorageEngine

Disposes the engine.

load

public <T extends DataObject> T load(Class<T> clazz,
                                     String id)

Description copied from interface: StorageEngine

Loads a data object of a specific type.

load

public <T extends DataObject> List<T> load(Class<T> clazz)

Description copied from interface: StorageEngine

Loads a collection of data objects of a given type. In general this method returns all instances of the specific type.

store

public void store(DataObject dataObject)

Description copied from interface: StorageEngine

Stores a data object. The engine is responsible to set an unique id to the data object.

update

public void update(DataObject dataObject)

Description copied from interface: StorageEngine

Updates a data object.

remove

public void remove(DataObject dataObject)

Description copied from interface: StorageEngine

Removes a data object.

commit

public void commit()

Description copied from interface: StorageEngine

Commits the Transaction

copyTo

public void copyTo(File file)