org.ximtec.igesture.storage
Class DefaultFileStorageEngine

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

All Implemented Interfaces:

StorageEngine

Direct Known Subclasses:

XMLStorageEngine, ZipStorageEngine

public abstract class DefaultFileStorageEngine
extends DefaultStorageEngine

Constructor Summary

DefaultFileStorageEngine(File file)
Constructor

Method Summary

void	commit() Commits the Transaction
protected abstract HashMap<Class<? extends DataObject>,List<DataObject>>	deserialize(File storageFile) Deserializes the objects
void	dispose() Disposes the engine.
File	getStorageFile()
protected boolean	isDoChanged() Returns true, if the data model has changed since the last storage/load operation.
<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.
protected void	removeDataObject(DataObject dataObject) Removes a data object from the object container.
protected abstract void	serialize(HashMap<Class<? extends DataObject>,List<DataObject>> objects, File file) Serializes the data objects.
protected void	setDoChanged(boolean doChanged) Sets the flag indicating if the data model has changed since the last storage/load operation.
void	setStorageFile(File storageFile)
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

Methods inherited from interface org.ximtec.igesture.storage.StorageEngine

copyTo

Constructor Detail

DefaultFileStorageEngine

public DefaultFileStorageEngine(File file)

Constructor

Parameters:

file -

Method Detail

commit

public void commit()

Description copied from interface: StorageEngine

Commits the Transaction

deserialize

protected abstract HashMap<Class<? extends DataObject>,List<DataObject>> deserialize(File storageFile)

Deserializes the objects

Parameters:

storageFile -

Returns:

dispose

public void dispose()

Description copied from interface: StorageEngine

Disposes the engine.

getStorageFile

public File getStorageFile()

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.

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.

remove

public void remove(DataObject dataObject)

Description copied from interface: StorageEngine

Removes a data object.

removeDataObject

protected void removeDataObject(DataObject dataObject)

Removes a data object from the object container.

Parameters:

dataObject - the data object to be removed.

serialize

protected abstract void serialize(HashMap<Class<? extends DataObject>,List<DataObject>> objects,
                                  File file)

Serializes the data objects.

Parameters:

objects -

file -

setStorageFile

public void setStorageFile(File storageFile)

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.

setDoChanged

protected void setDoChanged(boolean doChanged)

Sets the flag indicating if the data model has changed since the last storage/load operation.

Parameters:

doChanged -

isDoChanged

protected boolean isDoChanged()

Returns true, if the data model has changed since the last storage/load operation.

Returns:

true if the data model has changed.