Extent method not exits in Data Access, formerly OpenAccess ORM Getting Started

NADAV YEHESKEL

4 posts

Member since:
Dec 2008

Posted 03 Jul 2009 Link to this post

hello,
I try to compile the sample in chapter 1 in "OpenAccess - MadeEasy" :

    
            using (IObjectScope scope = ObjectScopeProvider1.ObjectScope()) 
        
                        { 
        
                            scope.Transaction.Begin(); 
        
                            // add a new customer 
        
                            Customer newnewCustomer = new Customer(); 
        
                            newCustomer.CustomerID = "A" + System.DateTime.Now.ToString("hmsfff"); 
        
                            newCustomer.CompanyName = "New Customer"; 
        
                            scope.Add(newCustomer); 
        
                            // get first customer using LINQ and modify 
        
                            Customer firstCustomer = 
        
                            scope.Extent<Customer>().Take(1).Single(); 
        
                            firstCustomer.CompanyName = 
        
                            "Company " + DateTime.Now.ToString("hmsfff"); 
        
                            scope.Add(firstCustomer); 
        
                            // use LINQ to retrieve customer ID's starting with "E" 
        
                            var results = 
        
                            from c in scope.Extent<Customer>() 
        
                            where c.CompanyName.StartsWith("E") 
        
                            select c; 
        
                            // delete "E" customers from the database 
        
                            foreach (Customer cust in results) 
        
                            { 
        
                                foreach (Order order in cust.Orders) 
        
                                { 
        
                                    foreach (OrderDetail detail in order.OrderDetails) 
        
                                    { 
        
                                        scope.Remove(detail); 
        
                                    } 
        
                                    scope.Remove(order); 
        
                                } 
        
                                scope.Remove(cust); 
        
                            } 
        
                            scope.Transaction.Commit(); 
        
                        } 
        
                        Console.Write("Done"); 
        
                        Console.ReadLine(); 
        
                    }

Build error :

Error 2 'Telerik.OpenAccess.IObjectScope' does not contain a definition for 'Extent' and no extension method 'Extent' accepting a first argument of type 'Telerik.OpenAccess.IObjectScope' could be found (are you missing a using directive or an assembly reference?) C:\Documents and Settings\Admin\My Documents\Visual Studio 2008\Projects\TestReverseMapping\TestReverseMapping\Program.cs 23 23 TestReverseMapping

Please help...

thanks,

shimon

Alexander

Admin

727 posts

Posted 03 Jul 2009 Link to this post

Hello Nadav,

The Extent<T>() method is an extension method and takes place in our Telerik.OpenAccess.Query assembly as it contains our Linq implementation. Please add a reference to the Telerik.OpenAccess ORM .NET 3.5 assembly and include this statement at the top of your source code file:

    
            using Telerik.OpenAccess.Query;

Then the error should no longer exist.

Best wishes,
Alexander
the Telerik team

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Sam

11 posts

Member since:
Oct 2009

Posted 08 Nov 2009 Link to this post

i found it in different place

using Telerik.OpenAccess;

it only worked for me after adding this line

PetarP

Admin

754 posts

Posted 09 Nov 2009 Link to this post

Hello Sam,

The extension method Extent() that is the main entry point for creating LINQ queries has been moved out of the Telerik.OpenAccess.Query namespace to the Telerik.OpenAccess namespace so that less using statements are required. This change was introduced with the Q3 2009 release. In the previous versions to use the Extent() method it was required to include Telerik.OpenAccess.Query.

Best wishes,
Petar
the Telerik team

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Sam

11 posts

Member since:
Oct 2009

Posted 11 Nov 2009 Link to this post

Thanks

Majid

9 posts

Member since:
Dec 2008

Posted 14 Mar 2010 Link to this post

Hi
I have latest release of ORM(2010.1.310.2) and facing same problem even i have included reference also.
Can you help me?

Regards

Brian

35 posts

Member since:
Dec 2007

Posted 14 Mar 2010 Link to this post

In the latest release, the .Query.dll was removed.

Make sure that you have referenced .Web.dll or .Win.dll instead as well as .35Extensions.dll or .40Extensions.dll .

You should then be able to find .Extent through the Telerik.OpenAccess namespace after you made the references.

KJF

5 posts

Member since:
Aug 2009

Posted 15 Mar 2010 Link to this post

Could you please point out what references you are talking about specifically as I am also using the 2010 release and cannot get the compiler past the extent error as well...

Thanks very much in advance...

Brian

35 posts

Member since:
Dec 2007

Posted 15 Mar 2010 Link to this post

OpenAccess usually adds the references if you use the "Enable Project" wizard.

You can also try the menu in VS: "OpenAccess > Configuration > Check Settings" this will alert you to any old assembly references.

If you want to do it manually:

Telerik.OpenAccess.dll

Telerik.OpenAccess.Adonet2.dll
Telerik.OpenAccess.Runtime.dll

Telerik.OpenAccess.35.Extensions.dll

Telerik.OpenAccess.Config.dll

Telerik.OpenAccess.Web.dll

Telerik.OpenAccess.Windows.dll

If you are on VS2010 and using 4.0 framework, include Telerik.OpenAccess.40.Extensions.dll

KJF

5 posts

Member since:
Aug 2009

Posted 15 Mar 2010 Link to this post

Brian thanks. I added them manually and all is working fine now.

I did originally use the enable project wizard but they were not added. I am using vs2008.

Thanks again...

Kevin

PetarP

Admin

754 posts

Posted 16 Mar 2010 Link to this post

Hello KJF,

We have fixed this in the build we published on Friday (version 2010.1.312.11). Now the Enable project wizard should add the correct references.

All the best,
Petar
the Telerik team

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Marco Leonardi

1 posts

Member since:
May 2010

Posted 01 Jun 2010 Link to this post

Hi.

I got the same problem. I'm using version 2010.1.527.2.
The Wizard does automatically add the reference of Telerik.OpenAccess.35.Extensions to my Project. With this reference I have the Extent method!
But my project have to work with .NET 4.0 and then I have to add the Reference Telerik.OpenAccess.40.Extensions. In this scenario the Extent method is missing!

Why?

Roland

4 posts

Member since:
Sep 2008

Posted 01 Jun 2010 Link to this post

Hello,

I have the same problem, that "Extent" is missing in version 2010.1.527.2.

Regards
Roland

PetarP

Admin

754 posts

Posted 03 Jun 2010 Link to this post

Hi Roland,

If you remove the reference to Telerik.OpenAccess.35.Extensions you will end up with missing Extent method. Please make sure that your project references Telerik.OpenAccess.35.Extensions.

Sincerely yours,
Petar
the Telerik team

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Joshua Kent

15 posts

Member since:
Nov 2009

Posted 04 Jun 2010 Link to this post

Telerik, Can you please update the documentation at (http://www.telerik.com/help/openaccess-orm/deploying-openaccess-operations-and-versioning.html) it still mentions OpenAccess.Query.dll and I was lost until I found this post mentioning that it had been replaced with the extensions dll.

Thanks,
Josh

Damyan Bogoev

Admin

581 posts

Posted 07 Jun 2010 Link to this post

Hi Joshua Kent,

We are sorry for the inconvenience caused. We will do our best to update the online documentation as soon as possible.

Sincerely yours,
Damyan Bogoev
the Telerik team

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