<map>, <idbag>, <array>, collection of components, many-to-many, collection of elements, <map> with elements key, <map> with key-many-to-one, <map> with component key, <map> with elements value, <map> with component value
As said, it is interesting feature but it need to be analyzed/implemented with more details. On Fri, Sep 3, 2010 at 12:57 AM, Diego Mijelshon <[email protected]>wrote: > I think Frans can tell that was just a joke :-) > > And yes, it is similar to CreateFilter, with one BIG difference: a > reference to NHibernate is not needed, which means you can safely use it > from the Domain/Model classes without injecting a reference to the > repository. > > The envisioned scenario is an extension of what can be currently > accomplished with lazy="extra". > For example, if you have a Currency entity with an ExchangeRates collection > (which is updated daily, hourly, whatever), you can do something like: > > var averageJulyRate = currency.ExchangeRates.AsQueryable() > .Where(r => r.Date >= new DateTime(2010, 7, > 1) && > r.Date < new DateTime(2010, 8, > 1) > .Average(r => r.Rate); > > Now, I'm sure there are bugs with the implementation, mostly in the form of > unsupported scenarios and naïve assumptions, because I'm still learning NH > internals... > But I'm pretty sure the feature itself is not a bug, but something that's > been actively requested. > > Diego > > > > On Fri, Sep 3, 2010 at 00:13, Fabio Maulo <[email protected]> wrote: > >> Take care with your words... >> The fact that I had some squabble with Frans does not mean that I don't >> respect him and does not mean that we have to review all patches with High >> priority. >> >> NH-2319 is the LINQ version of our CreateFilter, the patch is interesting >> but it need to be analyzed with more details. >> So far any LINQ applied to a collection, retrieved by NH, is always safe >> as any LinqToObject. >> Your request seems a bug masquerade of feature and needs a cautions >> discussion >> >> >> On Thu, Sep 2, 2010 at 11:46 PM, Diego Mijelshon >> <[email protected]>wrote: >> >>> Anyone? >>> >>> C'mon guys, at least some criticism from the wind team! >>> If you don't look at the received patches, Frans Bouma wins! (just >>> kidding) >>> >>> Diego >>> >>> >>> >>> On Wed, Sep 1, 2010 at 00:19, Diego Mijelshon <[email protected]>wrote: >>> >>>> I've implemented something I've seen requested several times in SO and >>>> the users list: the ability to query persistent collections using LINQ >>>> (server side, without initializing the collection and without referencing >>>> NHibernate). >>>> >>>> Patch: http://216.121.112.228/browse/NH-2319 >>>> >>>> <http://216.121.112.228/browse/NH-2319>This implementation should work >>>> for generic bag, set and list, with two limitations: the relationship must >>>> be one-to-many and bidirectional. This should still account for the >>>> majority >>>> of the collections out there. >>>> There are probably many other ways in which it can be improved, but I >>>> think it will be a useful feature. >>>> >>>> I'd really appreciate if any of the committers takes some minutes to >>>> review it and, hopefully, include it. Ping me if you have any questions. >>>> >>>> Diego >>>> >>> >>> >> >> >> -- >> Fabio Maulo >> >> > -- Fabio Maulo
