"Component mapping is just for prettying up your object because it makes no change to how the data is stored."
more than "pretty" code. you can add behavior to a component (class). I believe you can also subclass components. here is a simple example. On Nov 11, 11:27 am, J M <[email protected]> wrote: > Just to elaborate a bit. > > Component mapping is 1-to-1, and for the most part, collection mapping > is 1-to-n (can also by 1-to-1). > > As an example, if you have a user and they only have one address, you > might map the address as a component and access it like: > > city = user.Address.City > instead of: > city = user.City > > Component mapping is just for prettying up your object because it > makes no change to how the data is stored. > > If your user can for whatever reason have 10 addresses, then it would > it much better to map as a collection. You would then access it > through the collection, something like: > > city = user.Addresses[0].city > > On Nov 11, 1:51 am, Dick Negrana <[email protected]> wrote: > > > thanks oskar... > > > On Wed, Nov 11, 2009 at 8:23 AM, Oskar Berggren > > <[email protected]>wrote: > > > > Hmm... you seem to think that these are interchangeable concepts. They > > > are not. You use both, depending on what you need. > > > > If your entity contains a collection, you use "collection mapping". If > > > you entity has a property that is of another ("small") class, and you > > > don't want to map that to a separate table, use "component mapping". > > > > /Oskar > > > > 2009/11/11 Dick Negrana <[email protected]>: > > > > I just want to know which is appropriate to use in mapping a entity? > > > > Collection Mapping or Component Mapping in NHibernate 2.0 > > > > > On Tue, Nov 10, 2009 at 4:47 PM, Oskar Berggren < > > > [email protected]> > > > > wrote: > > > > >> 2009/11/10 silentdk <[email protected]>: > > > > >> > Guys, > > > > >> > I was confused which I going to use in Mapping my entity. Anyone can > > > >> > give me idea which is better. Component or Collection Mapping? > > > > >> Ehm... not sure I understand you correctly. Those are quite different > > > >> things. Which is better, a hammer or a saw? > > > > >> /Oskar --~--~---------~--~----~------------~-------~--~----~ 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] For more options, visit this group at http://groups.google.com/group/nhusers?hl=en -~----------~----~----~----~------~----~------~--~---
