In this case primaryKey() can be a db primary key or a business primary key since there is a 1-1 mapping.
Also, I don't think it would make sense to have dataview depending on an external IDatabaseModel. -Igor > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > Jonathan Locke > Sent: Wednesday, August 10, 2005 1:13 PM > To: wicket-user@lists.sourceforge.net > Subject: Re: [Wicket-user] DataView: IDataProvider.primaryKey() vote > > > i realize i'm jumping into the middle of a conversation i > haven't been following, but i saw the code below and thought of this: > > public interface IDatabaseModel extends IModel { > public boolean isSame(IDatabaseModel model); } > > that seems like a nice general way to define sameness between > database models without knowing how it's implemented. > then maybe create an abstract base class for typical database > models that define equality in terms of primary keys and/or > one that does it in terms of Object.equals(). > my very limited understanding of hibernate is that you want to define > Object.equals() in hibernate based on business fields rather > than primary key. > but in any case, with the contract above, you could push the > notion of how something is "the same" out of the contract and > into the implementation, where it probably belongs... > i don't know. i may not understand what you're doing. hope > i'm not starting a flame war... > > jon > > Phil Kulak wrote: > > >-1 > > > >If we wanted to get that method out of the DataProvider interface, I > >think it would be better to move it into the model: > > > >public interface IDataModel extends IModel { > > public String getPrimaryKey(); > >} > > > >I just woudn't like relying on an implementation of equals() > that may > >or may not exst, and the code because less seft documenting. > > > > > >------------------------------------------------------- > >SF.Net email is Sponsored by the Better Software Conference & EXPO > >September 19-22, 2005 * San Francisco, CA * Development Lifecycle > >Practices Agile & Plan-Driven Development * Managing > Projects & Teams * > >Testing & QA Security * Process Improvement & Measurement * > >http://www.sqe.com/bsce5sf > >_______________________________________________ > >Wicket-user mailing list > >Wicket-user@lists.sourceforge.net > >https://lists.sourceforge.net/lists/listinfo/wicket-user > > > > > > > > > ------------------------------------------------------- > SF.Net email is Sponsored by the Better Software Conference & > EXPO September 19-22, 2005 * San Francisco, CA * Development > Lifecycle Practices Agile & Plan-Driven Development * > Managing Projects & Teams * Testing & QA Security * Process > Improvement & Measurement * http://www.sqe.com/bsce5sf > _______________________________________________ > Wicket-user mailing list > Wicket-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/wicket-user > > > ------------------------------------------------------- SF.Net email is Sponsored by the Better Software Conference & EXPO September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf _______________________________________________ Wicket-user mailing list Wicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user
