BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  LINQ, .NET, and the future of OPF/ORM approaches          BorlandTalk.com Forum Index -> Delphi OO design View previous topic :: View next topic   Author Message Bob Dawson Guest Posted: Mon Apr 02, 2007 6:25 am    Post subject: LINQ, .NET, and the future of OPF/ORM approaches This is not so much Delphi-relevant as an interesting comment on OO layered design philosphy: From the primary author of the Gentle.NET persistence framework: "I have also been riddled with doubt as to the future of writing an ORM. While I still find Gentle incredibly useful in my own projects, there is not much future in it (with C# 3.0 and LINQ scheduled for Q2 2007)." source: http://www.mertner.com/confluence/display/Community/Version+2.0?focusedCommentId=1730#comment-1730 (Gentle is hosted at http://sourceforge.net/projects/gopf) bobD Back to top Joanna Carter [TeamB] Guest Posted: Mon Apr 02, 2007 4:08 pm    Post subject: Re: LINQ, .NET, and the future of OPF/ORM approaches Bob Dawson a écrit : Quote: This is not so much Delphi-relevant as an interesting comment on OO layered design philosphy: As you well know Bob, until the PTB give us a proper OO design group, this is the true home of real OO discussion :-) Quote: From the primary author of the Gentle.NET persistence framework: "I have also been riddled with doubt as to the future of writing an ORM. While I still find Gentle incredibly useful in my own projects, there is not much future in it (with C# 3.0 and LINQ scheduled for Q2 2007)." source: http://www.mertner.com/confluence/display/Community/Version+2.0?focusedCommentId=1730#comment-1730 (Gentle is hosted at http://sourceforge.net/projects/gopf) Personally, I woould still write an ORM, it's just that it would no longer have to build SQL but, instead, translate a Linq (object) expression tree into a database DLing expression tree. The class-table mappings would still be relevant for resolving impedance mismatch. Joanna -- Joanna Carter [TeamB] Consultant Software Engineer Back to top Joanna Carter [TeamB] Guest Posted: Mon Apr 02, 2007 4:13 pm    Post subject: Re: LINQ, .NET, and the future of OPF/ORM approaches Joanna Carter [TeamB] a écrit : Quote: Personally, I woould still write an ORM, it's just that it would no longer have to build SQL but, instead, translate a Linq (object) expression tree into a database DLing expression tree. The class-table mappings would still be relevant for resolving impedance mismatch. BTW, please excuse the typos, I now use a Macbook Pro and am still getting used to the keyboard layout. Now to install Parallels and an XP VM :-) Joanna -- Joanna Carter [TeamB] Consultant Software Engineer Back to top Anders Isaksson Guest Posted: Mon Apr 02, 2007 4:40 pm    Post subject: Re: LINQ, .NET, and the future of OPF/ORM approaches Joanna Carter [TeamB] wrote: Quote: Personally, I woould ... Who said "You can't get too much oo" ? :-) -- Anders Isaksson, Sweden BlockCAD: http://web.telia.com/~u16122508/proglego.htm Gallery: http://web.telia.com/~u16122508/gallery/index.htm Back to top danny heijl Guest Posted: Mon Apr 02, 2007 5:13 pm    Post subject: Re: LINQ, .NET, and the future of OPF/ORM approaches Bob Dawson schreef: Quote: From the primary author of the Gentle.NET persistence framework: "I have also been riddled with doubt as to the future of writing an ORM. While I still find Gentle incredibly useful in my own projects, there is not much future in it (with C# 3.0 and LINQ scheduled for Q2 2007)." The NHibernate folks see it differently and are already talking about the possibilities of integrating NHibernate with LINQ (NHLinq): http://forum.hibernate.org/viewtopic.php?t=958233&sid=ddcd1bbfa598603859b4cdbc1e708c9a NHibernate is great by the way, especially when used with MyGeneration (we're using partial classes and generics when generating). Danny --- Back to top Peter Morris [Droopy eyes Guest Posted: Mon Apr 02, 2007 8:40 pm    Post subject: Re: LINQ, .NET, and the future of OPF/ORM approaches I'll continue to use ECO. Fetching objects from the DB is only a small part of what it does,for starters... State machines In memory transactions OCL derived properties/associations with caching Mapping a model to a different DB structure using XML Multi-user change notification Lazy fetching of object data Delayed fetching for specified properties I expect it will be possible to implement some kind of LINQ support for ECO too, so I doubt I'll have to do without LINQ forever (or at all). -- Pete Blessed are the geek, for they shall public class GeekEarth : Earth {} ==== Audio compression components, DIB graphics controls, ECO extensions, FastStrings : http://www.droopyeyes.com My blog : http://mrpmorris.blogspot.com Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         BorlandTalk.com Forum Index -> Delphi OO design All times are GMT Page 1 of 1   Jump to: Select a forum C++ Builder Newsgroups----------------C++ BuilderC++ Builder (ActiveX)C++ Builder (Announcements)C++ Builder (Command Line Tools)C++ Builder DatabasesC++ Builder Databases (ADO)C++ Builder Databases (Desktop)C++ Builder Databases (InterBase Express)C++ Builder Databases (Multi-Tier)C++ Builder Databases (SQL Servers)C++ Builder (Graphics)C++ Builder (IDE)C++ Builder (Internet)C++ Builder (Internet Socket)C++ Builder (Internet Web)C++ Builder (Jobs)C++ Builder (Language)C++ Builder (Language C++)C++ Builder (Compatibility with MFC)C++ Builder (Native API)C++ Builder (Non-Technical)C++ Builder (Students)C++ Builder (Third Party Tools)C++ Builder (Upgrade)C++ Builder (VCL)C++ Builder (VCL Components Usage)C++ Builder (VCL Components Development)C++ Builder (VCL Usage)C++ Builder (WinAPI)C++ Builder Installation Delphi Newsgroups----------------Delphi (General)Delphi ActiveX Controls UsageDelphi ActiveX Controls DevelopmentDelphi As400Delphi DatabasesDelphi Databases (ADO)Delphi Databases (dbExpress)Delphi Databases (Desktop)Delphi Databases (InterBase Express)Delphi Databases (Multi-Tier)Delphi Databases (SQL Servers)Delphi DeploymentDelphi GraphicsDelphi IDEDelphi InternationalizationDelphi InternetDelphi Internet Isapi-WebBrokerDelphi Internet WebSnapDelphi Internet WinsockDelphi JobsDelphi Language BASMDelphi Language ObjectPascalDelphi Model Driven Architecture (General)Delphi Model Driven Architecture (Third Party)Delphi MultimediaDelphi Native APIDelphi Non-TechnicalDelphi ObjectPascalDelphi OLE AutomationDelphi OO designDelphi OpenToolsAPIDelphi Reporting-ChartingDelphi RTLDelphi StudentsDelphi TeamSourceDelphi Thirdparty ToolsDelphi Thirdparty Tools (General)Delphi Thirdparty Tools (IntraWeb)Delphi Thirdparty Tools (RaveReports)Delphi UpgradeDelphi VCLDelphi VCL ComponentsDelphi VCL Components UsingDelphi VCL Components WritingDelphi WebServices SOAPDelphi WinAPIDelphi XMLDelphi Installationcomp.lang.pascal.delphi.components.misccomp.lang.pascal.delphi.components.usagecomp.lang.pascal.delphi.components.writingcomp.lang.pascal.delphi.databasescomp.lang.pascal.delphi.misccomp.sources.delphi JBuilder Newsgroups----------------JBuilderJBuilder AnnouncementsJBuilder Applet IssuesJBuilder As400JBuilder CompilerJBuilder CORBA/RMIJBuilder DatabasesJBuilder DB SwingJBuilder DebuggerJBuilder DeploymentJBuilder DocumentationJBuilder EnterpriseJBuilder HandheldJBuilder IDEJBuilder JavaJBuilder JavaAPIJBuilder Java LanguageJBuilder Java SwingJBuilder Java BeansJBuilder Java Beans UsageJBuilder Java Beans DevelopmentJBuilder JBCLJBuilder JDataStoreJBuilder JobsJBuilder LinuxJBuilder MacintoshJBuilder & MobileSetJBuilder MultiLingual AppsJBuilder Non-TechnicalJBuilder OpenToolsJBuilder Servlets (JSP)JBuilder StudentsJBuilder Team DevelopmentJBuilder Thirdparty ToolsJBuilder UpgradeJBuilder Installation InterBase Newsgroups----------------InterBaseInterBase Bug DiscussionInterBase GeneralInterBase IBConsoleInterBase OpenSourceInterBase ReplicationInterBase SQLInterBase ThirdpartyInterBase Installation Miscellaneous Borland Newsgroups----------------AppCenterAppServerEnteraVisiBroker  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.