@Jon: does Mono support ReaderWriterLockSlim? have you got some objection about creating a set of static thread safe dictionaries for mappings?
@Pascal: is QueryCache thread safe? could it be improved by using the Brian Rudolph code? Giacomo On Wed, Apr 22, 2009 at 4:31 PM, Giacomo Tesio <[email protected]> wrote: > ehm... I'm blind :-D > > Thanks a lot! > > > Giacomo > > > On Wed, Apr 22, 2009 at 4:04 PM, Andrus <[email protected]> wrote: > >> >> http://devplanet.com/blogs/brianr/archive/2008/09/29/thread-safe-dictionary-update.aspx >> >> >> ----- Original Message ----- >> *From:* Giacomo Tesio <[email protected]> >> *To:* [email protected] >> *Sent:* Wednesday, April 22, 2009 4:55 PM >> *Subject:* Re: DataMapper BUG >> >> ??? >> where? >> >> On Wed, Apr 22, 2009 at 3:45 PM, Andrus <[email protected]> wrote: >> >>> There is also 3 days newer blog entry about this: >>> >>> // >>> http://devplanet.com/blogs/brianr/archive/2008/09/29/thread-safe-dictionary-update.aspx >>> >>> Andrus. >>> >>> ----- Original Message ----- >>> *From:* Giacomo Tesio <[email protected]> >>> *To:* dblinq <[email protected]> >>> *Sent:* Wednesday, April 22, 2009 4:00 PM >>> *Subject:* Re: DataMapper BUG >>> >>> Hello world :-D >>> >>> Working on the lazy loading I've noticed some bugs in the DataMapper. >>> >>> The worse is that it re-evaluate the mapping each time, even if mappings >>> don't change. >>> >>> Fix this bug mean changing the IDataMapper interface too (which is used >>> only in the DataContext and ExpressionDispatcher ). >>> >>> There are two ways: >>> - Create a set of static thread safe dictionaries for mappings [1] >>> - Create a set of static dictionaries filled with all possible results at >>> application startup (toward an init metod? using a static constructor? any >>> idea?) >>> >>> To choose we need to evaluate Mono support, thread safety and >>> performance. >>> >>> >>> I know this is a maior refactoring but I think it could dramatically >>> improve performances. >>> >>> >>> >>> Giacomo >>> >>> >>> [1] >>> For a thread safe dictionary look at >>> http://devplanet.com/blogs/brianr/archive/2008/09/26/thread-safe-dictionary-in-net.aspxbut >>> note that I've not yet any experience >>> about multi threads on .NET so it should be evaluated) >>> >>> >>> >>> On Tue, Apr 21, 2009 at 2:13 PM, Giacomo Tesio <[email protected]> wrote: >>> >>>> DataMapper.GetEntityRefAssociations() and >>>> DataMapper.GetEntityRefAssociations() depend on Attribute based mapping. >>>> >>>> So XmlMappingSource could not work correctly on EntityRef and EntitySet >>>> (neither on Mono nor on Microsoft.NET). >>>> >>>> >>>> >>>> Giacomo >>>> >>> >>> >>> >> >> >> > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "DbLinq" 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/dblinq?hl=en -~----------~----~----~----~------~----~------~--~---
