net.sf.derquinsej.hib3
Interface GenericDAO<T,ID extends Serializable>

Type Parameters:

T - Persistent type.

ID - Primary Key type.

All Superinterfaces:

DAO

All Known Implementing Classes:

GenericDAOImpl

public interface GenericDAO<T,ID extends Serializable>
extends DAO

Generic DAO interface.

Author:

Andres Rodriguez

Method Summary

void	delete(T entity) Deletes an entity instance.
void	deleteById(ID id) Deletes an entity instance.
List<T>	findAll() Returns all entities of the persistent type.
T	findById(ID id, boolean lock) Finds an entity by ID.
T	save(T entity) Saves an entity.
T	saveOrUpdate(T entity) Saves or updates an entity, depending upon resolution of the unsaved-value checks.
T	update(T entity) Updates an entity.

Methods inherited from interface net.sf.derquinsej.hib3.DAO

clear, flush, sync

Method Detail

findById

T findById(ID id,
           boolean lock)

Finds an entity by ID.

Parameters:

id - ID

lock - If the entity shall be locked.

Returns:

The requested entity or null if it is not found.

findAll

List<T> findAll()

Returns all entities of the persistent type.

Returns:

A list with all the instances.

save

T save(T entity)

Saves an entity.

Parameters:

entity - Entity to save.

Returns:

The persisted entity.

update

T update(T entity)

Updates an entity.

Parameters:

entity - Entity to update.

Returns:

The persisted entity.

saveOrUpdate

T saveOrUpdate(T entity)

Saves or updates an entity, depending upon resolution of the unsaved-value checks.

Parameters:

entity - Entity to persist.

Returns:

The persisted entity.

delete

void delete(T entity)

Deletes an entity instance.

Parameters:

entity - Instance to delete.

deleteById

void deleteById(ID id)

Deletes an entity instance.

Parameters:

id - Id of the instance to delete.