Most OR Mappers don't work like this either ... It forces the class to be inherited from a base class which is worse than the problem.
ObjectDataSource is probably a poor mans objectspace which got pulled from 2.0 and put in LongHorn , groan.. Ben > -----Original Message----- > From: Unmoderated discussion of advanced .NET topics. [mailto:ADVANCED- > [EMAIL PROTECTED] On Behalf Of Luca Minudel > Sent: Thursday, 7 July 2005 7:13 AM > To: [email protected] > Subject: [ADVANCED-DOTNET] ASP.NET 2.0 ObjectDataSource poor design? > > In a Business Layer with Busines Entities with CRUD Behaviors (has > described here [1] at Cap. 'Defining Custom Business Entity Components > with > CRUD Behaviors') typically > 1) the Update() method have zero parameters > 2) the Update() method is in a Business Entity class say Author, while the > SelectAuthorsByXxx() methods that get filtered lists of authors is in > another Business Entity say Authors class. > > But... ObjectDataSource: > 1) don't let me set a method with zero parameters to UpdateMethod! > 2) don't let me set SelectMethod and UpdateMethod from 2 different > classes! > > To use ObjectDataSource in real world application I had do write a wrapper > like this: > > public static class AuthorsWrapperForObjectDataSource { > public static List<Author> SelectAuthorsByState(string state, string > sortExpression) { > return AuthorsList.GetAuthorsByState(state, sortExpression); > } > > public static int UpdateAuthor(Author author) { > return author.Update(); > } > } > > I have to write a wrapper for ObjectDataSource also when I have a Business > Layer with Busines Entities without CRUD Behaviors (has described here [1] > at Cap. 'Defining Custom Business Entity Components'). > > Am I missing the correct usage of ObjectDataSource or someone else noted > these ObjectDataSource limitations? > > TIA (luKa) > > http://nullabletypes.sf.net/ > http://dev.luca.minudel.it/ > http://www.luca.minudel.it/eng/ > > > [1] Designing Data Tier Components and Passing Data Through Tiers, > Microsoft, 2002 > http://msdn.microsoft.com/library/default.asp?url=/library/en- > us/dnbda/html/BOAGag.asp > > =================================== > This list is hosted by DevelopMentor(r) http://www.develop.com > > View archives and manage your subscription(s) at > http://discuss.develop.com =================================== This list is hosted by DevelopMentor® http://www.develop.com View archives and manage your subscription(s) at http://discuss.develop.com
