RE: [Springframework-developer] How create Generic DAO pattern in tiger

[Bijl, S. v. d. <sil...@lo...>]

Hi,
=20
I've been playing around with this. I came up with the following code:
=20
=20
public class AbstractBaseHibernateDao<ObjectType, IdType extends Serializab=
le> extends
  HibernateDaoSupport implements BaseDao<ObjectType, IdType> {
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 // JDK 5.0 trickery to retrieve the object class
 private Class ourClass =3D (Class)((ParameterizedType)getClass().getGeneri=
cSuperclass()).getActualTypeArguments()[0];

 /*=20
  * Retrieve object from db.=20
  */
 @SuppressWarnings("unchecked")
 public ObjectType get(IdType id) throws DataAccessException {=20=20
  return (ObjectType) getHibernateTemplate().load(ourClass, id);
 }
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}

I declared the interface similiar to your code. Hope this helps.=20
=20
Silvester
=20
________________________________

Van: spr...@li... namens Achmad Ar=
if Rachim
Verzonden: di 11-10-2005 6:33
Aan: spr...@li...; jug-indonesia@yahoogr=
oups.com
Onderwerp: [Springframework-developer] How create Generic DAO pattern in ti=
ger


How to read Inherit Generic Type class ?

Guys I've been googling all week but couldn't find solution.

Id like to create Generic DAO pattern. So here's what i do

public interface Dao<E extends Entity, I extends Serializable>{
    public I create(E entity);
    public E read(I id);
    public void update(E entity);
    public E delete(I id);
}

concrete class would be like this

public class DaoBean implements Dao{
    public Serializable create(Entity entity){
        getHibernateTemplate.save(entity);
        return entity.getId();
    }
    public void update(Entity entity){
        getHibernateTemplate.update(entity);
    }
    public Entity read(Serializable id){
        return (Entity)getHibernateTemplate.load(getClass(),id);
    }
    public Entity delete(Serializable id){
        Entity entity =3D read(id);
        getHibernateTemplate.delete(entity);
        return entity;
    }

    public Class getEntityClass(){
        // now ... how to get Dao E class ????
        return E.class;
    }
}

The millon dollar* question is how to get Dao Generic E type class ???
(* million asked question)

Thanx=20


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