dk.netarkivet.wayback.indexer
Class GenericHibernateDAO<T,PK extends java.io.Serializable>

java.lang.Object
  dk.netarkivet.wayback.indexer.GenericHibernateDAO<T,PK>

Type Parameters:

T - The type of the persistent entity.

PK - The type of the primary key for the entity.

All Implemented Interfaces:

GenericDAO<T,PK>

Direct Known Subclasses:

ArchiveFileDAO

public class GenericHibernateDAO<T,PK extends java.io.Serializable>
extends java.lang.Object
implements GenericDAO<T,PK>

An implementation of Generic DAO which is specialised for hibernate object stores.

Constructor Summary

GenericHibernateDAO(java.lang.Class<T> type)
Constructor for the class.

Method Summary

PK	create(T o) Persist the newInstance object into database.
void	delete(T o) Remove an object from persistent storage in the database.
protected java.util.List<T>	findByCriteria(org.hibernate.criterion.Criterion... criterion) Use this inside subclasses as a convenience method to find objects matching a given criterion.
protected org.hibernate.Session	getSession() Return a session object for managing instances of this class.
T	read(PK id) Retrieve an object that was previously persisted to the database using the indicated id as primary key.
void	update(T o) Save changes made to a persistent object.

Methods inherited from class java.lang.Object

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

Constructor Detail

GenericHibernateDAO

public GenericHibernateDAO(java.lang.Class<T> type)

Constructor for the class.

Parameters:

type - the type of the persistent entity managed by this class.

Method Detail

create

public PK create(T o)

Description copied from interface: GenericDAO

Persist the newInstance object into database.

Specified by:

create in interface GenericDAO<T,PK extends java.io.Serializable>

Parameters:

o - the object to persist.

Returns:

the key assigned to the object.

read

public T read(PK id)

Description copied from interface: GenericDAO

Retrieve an object that was previously persisted to the database using the indicated id as primary key.

Specified by:

read in interface GenericDAO<T,PK extends java.io.Serializable>

Parameters:

id - the key of the object to be retrieved.

Returns:

the retrieved object.

update

public void update(T o)

Description copied from interface: GenericDAO

Save changes made to a persistent object.

Specified by:

update in interface GenericDAO<T,PK extends java.io.Serializable>

Parameters:

o - the object to be updated.

delete

public void delete(T o)

Description copied from interface: GenericDAO

Remove an object from persistent storage in the database.

Specified by:

delete in interface GenericDAO<T,PK extends java.io.Serializable>

Parameters:

o - the object to be deleted.

getSession

protected org.hibernate.Session getSession()

Return a session object for managing instances of this class.

Returns:

the session.

findByCriteria

protected java.util.List<T> findByCriteria(org.hibernate.criterion.Criterion... criterion)

Use this inside subclasses as a convenience method to find objects matching a given criterion.

Parameters:

criterion - the criteria to be matched.

Returns:

a list of objects matching the criterion.