dhis2-devs team mailing list archive

[Quang Nguyen <quangnguyen111@xxxxxxxxx>]

Hi HIeu,

On Wed, Jun 16, 2010 at 3:49 PM, Hieu Dang Duy
<hieu.hispvietnam@xxxxxxxxx>wrote:

> Hi devs and Lars,
>
> Surely that, we've got a hidden trouble when using the "*save*" method in
> *HibernateGenericStore<T>* class here. Maybe call it is a fatal error.
>
> Have a look at this error message:
> *
> **ERROR 11:03:42,172 Error while executing action
> (ExceptionInterceptor.java [http-8080-6])
> java.lang.ClassCastException:
> org.hisp.dhis.regularexpression.RegularExpressionLib cannot be cast to
> java.lang.Integer at
> org.hisp.dhis.hibernate.HibernateGenericStore.save(HibernateGenericStore.java:146)
> *
>
> (In which, RegularExpressionLib is my defined class)
>
> This error occurred in when trying to add/save a new record in a table
> where has the primary-key is a composite-id.
>
> Currently, the method "save" which is being defined like below:
>
>     public final int save( T object )
>     {
>         return (Integer) sessionFactory.getCurrentSession().save( object );
>     }
>
> My opinion/suggestion in this case is that *SHOULD NOT* cast the type of
> returned value like that, Integer for instance.
>
> The "save" method of Session class now returns to an object as the instance
> of Serializable class. Btw, if not mistaken, remembered that this method
> usually returns the id of the new added record. So, this casting would right
> if and only if the storing table contains a simple primary-key, "id" for
> example.
>
> If the primary-key is not a single key but is a composite key then the
> problem would be happened like the example's above.
>
> Give me your thought and any suggestion? Or how fix it?
>
> Takk to all.
>
>
In my opinion, you should override the “save” method in your
RegularExpressionLibDAO because we don’t have too much object with composite
key.

Regards,
Quang


> --
> Hieu.HISPVietnam
> Good Health !
>
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