RE: Object Creation and Settings Ids

From: Dave Merrin (dmerri..pasystems.co.uk)
Date: Mon Apr 10 2006 - 10:58:11 EDT

  • Next message: WONDER: "Reengineer DB schema in PostgreSQL"

    Hi Andrus,

    thanks for that. I think I'd tried it before but ran into validation
    problems (I had a setToItemType() method and the db field is required).
    Since then I've looked through and overridden the validateForSave method
    (can't remember why). I should be able to modify this method to allow for
    direct and indirect access.

    Cheers,

    Dave

    > -----Original Message-----
    > From: Andrus Adamchik [mailto:andru..bjectstyle.org]
    > Sent: 10 April 2006 12:50
    > To: cayenne-use..ncubator.apache.org
    > Subject: Re: Object Creation and Settings Ids
    >
    >
    > Technically this can be done by mapping a foreign key column as an
    > ObjAttribute. Still it would go against the spirit of Cayenne. I
    > suggest to use a real ItemType object. DataObjectUtils.objectForPk
    > (..) should be a pretty efficient way to get a hold of ItemType
    > instance, as after the object is fetched for the first time, it will
    > be served from shared cache on subsequent calls.
    >
    > Andrus
    >
    >
    >
    > On Apr 10, 2006, at 2:02 PM, Dave Merrin wrote:
    > > Hi,
    > >
    > > Given a new object I'd like to be able to set on of the properties
    > > (a 'to'
    > > property) without having the other object(only the ID). e.g.
    > >
    > > Item is the object I'm creating. It has a property called ItemType
    > > which is
    > > another object. I have the ItemType ID but not the actual object.
    > > I'd like
    > > to have a method called Item.setItemTypeID(Long itemTypeId).
    > >
    > > Is this possible?
    > >
    > > Cheers,
    > >
    > > Dave
    >

    This archive was generated by hypermail 2.0.0 : Mon Apr 10 2006 - 10:59:36 EDT