Package de.uka.ipd.sdq.sensorframework.dao.file

Class AbstractFileDAO<T>

java.lang.Object

de.uka.ipd.sdq.sensorframework.dao.file.AbstractFileDAO<T>

Type Parameters:

T - The type of the entities this DAO is able to handle

Direct Known Subclasses:

FileExperimentDAO, FileExperimentRunDAO, FileSensorDAO, FileStateDAO

public abstract class AbstractFileDAO<T>
extends Object

Deprecated.

Superseded by EDP2.

An abstract implementation of a file DAO. The DAO is based on the following principle. All entities are stored in a hashmap which hashes IDs to entities. The hashmap is fully loaded from the background storage at startup, manipulated in memory, and finally stored back on request or when the DAO is disposed.

Field Summary

Fields

Modifier and Type	Field	Description
protected FileDAOFactory	factory	Deprecated. Interface to other DAOs
protected IDGenerator	idGen	Deprecated. ID Generator instance.

Constructor Summary

Constructors

Constructor	Description
AbstractFileDAO(IDAOFactory factory, IDGenerator idGen, String prefix)	Deprecated. Constructor of this DAO

Method Summary

Modifier and Type	Method	Description
void	dispose()	Deprecated. Disposes this DAO.
T	get(long id)	Deprecated. Get entity with given ID from DAO
protected Collection<T>	getAllEntities()	Deprecated. Returns a list of all entities stored in this DAO
protected void	putEntity(T entity)	Deprecated. Store a new element in this DAO.
void	removeEntity(T entity, boolean doCascade)	Deprecated. Remove the given entity from this DAO's control
void	storeAll()	Deprecated. Stores all elements controlled by this DAO on the persistent storage

Methods inherited from class java.lang.Object

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

Field Details

factory

protected FileDAOFactory factory

Deprecated.

Interface to other DAOs

idGen

protected IDGenerator idGen

Deprecated.

ID Generator instance. Used by subclasses to create IDs of new elements

Constructor Details

AbstractFileDAO

public AbstractFileDAO(IDAOFactory factory,
 IDGenerator idGen,
 String prefix)

Deprecated.

Constructor of this DAO

Parameters:

factory - Interface to other DAOs

idGen - Identifier Generator used for new elements

prefix - Filename prefix for the filename used to persist the elements controlled by this DAO

Method Details

storeAll

public void storeAll()

Deprecated.

Stores all elements controlled by this DAO on the persistent storage

get

public T get(long id)

Deprecated.

Get entity with given ID from DAO

Parameters:

id - ID of the element to retrieve. The element with ID id has to exist otherwise an IllegalArguementException is thrown

Returns:

The requested element

putEntity

protected void putEntity(T entity)

Deprecated.

Store a new element in this DAO. Used by subclasses to register newly created elements

Parameters:

entity - A new element. The element must not be controlled by the DAO already

getAllEntities

protected Collection<T> getAllEntities()

Deprecated.

Returns a list of all entities stored in this DAO

Returns:

A list of all entities stored in this DAO

removeEntity

public void removeEntity(T entity,
 boolean doCascade)

Deprecated.

Remove the given entity from this DAO's control

Parameters:

entity - The entity to remove

doCascade - If true, all entities which depend on the passed entity are deleted as well

dispose

public void dispose()

Deprecated.

Disposes this DAO. This includes persisting all changes to the background storage