If an ORM can't work with my POCOs it is not a choice for my needs. For some reason EF4 was improved... well at least they are trying to give support to POCO ;)
On Mon, Jul 12, 2010 at 9:12 AM, <[email protected]> wrote: > And what are the benefits ? > > You say NHIbernate is just an option and that is not true. There are design > choices and NHibernate is very different from EF by design. Choosing to use > an > ORM and a tool like NHibernate is not a choice that should be taken lightly > ! > And even then, each solutions is providing it own implementation of the > subject. Ok it looks easy with NHibernate, since you are using Poco. But > not all > ORM. It is not because you have an interface defining what object and what > query you can access and a Poco library containing your entities that all > ORM > framework can be used. They all handle differently track changing, session > mgmt, > mapping attributes, inheritance...So will you spend 2 months trying to > build the > "superORM Abstraction Toolkit" (And even you can't guarantee that it will > work > with a predictible amount of work), or will you focus on testability and > simplicity ? > > That's exactly JPA. So here are the specifications. > > I understand what you say, but I'm not using a DAO impl for changing the > components, I'm using it for testability. > > What you describe is different. You know the product you are using. You > face new > issues or requirements, you handle them. Ok. But that's something you must > think > of before coding. That's not because you are using an ORM that you won't > need a > plain old sql connection to get closer to the metal. > > > Fred. > > Selon Fabio Maulo <[email protected]>: > > > Can you provide an example about "messy codebase" ? > > I'm using Repository/DAOs and EQO. > > CpBT was born using ADO.NET and then, only changing DAOs > implementations, > > using NHibernate. > > In a winAzure app. we have a usecase that was born with a service-class > > using various EQO to return a pretty complex ViewModel, then I have > injected > > another impl. using BlobStorage. > > > > NHibernate is only an option, NHibernate.Validator, Windsor and so on are > > "only" options. > > > > In prjs, where I'm working, only the implementation of DAO/Repository + > EQO > > knows about NHibernate. > > > > On Mon, Jul 12, 2010 at 6:52 AM, <[email protected]> wrote: > > > > > If you choose a product (g.e NHibernate) and put a new level of > abstraction > > > on > > > it, the only result will be a messy codebase and (pardon me) a true > waste > > > of > > > time. > > > > > > If you think one day you will have to change your Data Layer then : > > > - You didn't pick the right choice > > > - Your selection process is not sufficient > > > - You will lose time doing technical staff that give very little added > > > value to > > > your developpement. > > > - You will face performance issues (the house that jack built syndrom) > > > > > > There is no such thinh as the ultimate reusable component because it is > by > > > design a bad idea. > > > > > > In the Java world, it is called JDO,JPA and EJB. Just take a tour, take > a > > > look, > > > try to make your path through the 23 different frameworks required and > the > > > maount of work required to simply do some very basic CRUD stuff and you > > > will get > > > a flavor of the subject. > > > > > > Putting a "level of abstraction" is never a good thing when building > the > > > basements. It is just increasing the complexity while putting some real > > > risk. > > > > > > If you can't explain why and how you choose your persistence layer, > then > > > that's > > > where your real risk is. And it won't go away by saying "I can change > if I > > > need > > > to". > > > > > > Sorry, > > > > > > Fred. > > > > > > > > > Selon deepucodemaker <[email protected]>: > > > > > > > Hello All, > > > > > > > > I would like to design a system/application using NHibernate. But I > > > > also want to so flexible that in future if I unplug the NHibernate > and > > > > use ADO.NET Entity framework or other framework application should > not > > > > crash. > > > > > > > > Can someone please send me links/videos so that i can design > > > > independent architecture for this purpose. > > > > > > > > I tried lot in google and understood NHibernate but there is no > > > > example which helps me to deisgn ultimate reusable component. > > > > > > > > Please do the needful > > > > > > > > Thanks > > > > > > > > -- > > > > You received this message because you are subscribed to the Google > Groups > > > > "nhusers" group. > > > > To post to this group, send email to [email protected]. > > > > To unsubscribe from this group, send email to > > > > > > [email protected]<nhusers%[email protected]> > <nhusers%[email protected]<nhusers%[email protected]> > > > > > . > > > > For more options, visit this group at > > > > http://groups.google.com/group/nhusers?hl=en. > > > > > > > > > > > > > > > > > -- > > > You received this message because you are subscribed to the Google > Groups > > > "nhusers" group. > > > To post to this group, send email to [email protected]. > > > To unsubscribe from this group, send email to > > > > > [email protected]<nhusers%[email protected]> > <nhusers%[email protected]<nhusers%[email protected]> > > > > > . > > > For more options, visit this group at > > > http://groups.google.com/group/nhusers?hl=en. > > > > > > > > > > > > -- > > Fabio Maulo > > > > -- > > You received this message because you are subscribed to the Google Groups > > "nhusers" group. > > To post to this group, send email to [email protected]. > > To unsubscribe from this group, send email to > > [email protected]<nhusers%[email protected]> > . > > For more options, visit this group at > > http://groups.google.com/group/nhusers?hl=en. > > > > > > > -- > You received this message because you are subscribed to the Google Groups > "nhusers" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<nhusers%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/nhusers?hl=en. > > -- Fabio Maulo -- You received this message because you are subscribed to the Google Groups "nhusers" group. 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