What are Java's Linq and Entity Framework equivalents?

Am I crazy for using Entity Framework with an OleDB connection?

The approach you are using to build the EF connection string is correct....BUT......The Entity Framework only works with Providers (i.e. SqlClient) that support something called provider services....The OleDB provider doesn't support 'Provider Services' so you can't use EF with the OleDb (unless you can find a third party OleDb provider with suppor...

LINQ to Entities only supports casting in the Entity Framework. basic kinds in the Entity Data Model

I know this is old, but I was looking to accomplish the exact same thing as the OP and didn't want to use the ...Func<IQueryable<T>, IOrderedQueryable<T>>... in my dictionary. Mostly because I would have to implement both an ...OrderBy... and ...OrderByDescending... delegate....I ended up creating an extension method for IQueryable called ...Object...

Is there an Entity Framework equivalent of Linq2Sql's DataContext.GetTableTEntity> (ObjectContext.CreateQueryT>)?

public IQueryable GetTable<T>(T entity) where T : class { return context.CreateObjectSet<T>(); }

Which Entity Framework version am I using?

Another way to get the EF version you are using is to open the Package Manager Console (PMC) in Visual Studio and type Get-Package at the prompt. The first line with be for EntityFramework and list the version the project has installed....PM> Get-Package Id Version Description/Release Notes ...

What am I doing wrong with MySQL and Entity Framework?

I am completely new to Entity Framework and even ADO.NET in general (don't typically do much work with databases)....I downloaded and installed ...MySQL Connector/NET 6.3.5.......I created a new C# project in Visual Studio 2010....I added a new ADO.NET Entity Data Model to my project and chose "Generate from database."...I added a new connection to...

Linq to Entities vs. Linq to SQL vs. Entity Framework

I read a lot of articles about how to work with a database in WPF .Net 4 application. As I understood, the main two technologies are:...Linq to SQL (L2S)...Entity Framework (EF)...but sometimes I also can see mention of Linq to Entities (L2E) technology, but can't find clear explanation what difference between EF and L2E....So, my question is: Does...

The LINQ expression node type 'Invoke' is not supported in the entity framework's LINQ to Entities.

can anyone help me out in solving my issue. I am using the code given below:...public IEnumerable<InvoiceHeader> Getdata(Expression<Func<InvoiceHeader, bool>> predicate) { return AccountsContext.InvoiceHeaders.Include("Company").Include("Currency") .Include("BusinessPartnerRoleList").Include("DocumentType") .Where(predicate); } ...

In System.Data.Entity.dll (Entity Framework), why am I receiving a NullReferenceException?

I got the same problem when accidently loading a Module multiple times in a modular Architecture....Additional, the Module(s) where using 2 copies of the same ...DbContext..., trying to connect one Entity from one Context to another Entity of the other Context....This masked the ...InvalidOperationException... (cannot use an Entity in multiple Trac...

What is the equivalent of "CASE WHEN THEN" (T-SQL) with Entity Framework?

In this case, I'd say the ...conditional operator... (...p ? x : y...) is a good substitute....// context.MyTable is an IQueryable<MyTable> var query = from t in context.MyTable group t by t.Code into grp select new { Code = grp.Key, Jan = grp.Sum(x => x.Month == 1 ? x.Days : 0), ...

I am trying to return XML data from Entity Framework

I have create a MVC5 web app using Web API. I also use Entity Framework 6....I have a stored procedure:...SELECT * FROM [Group] WHERE CompanyRef = @CompanyRef OR CompanyRef = '00000000-0000-0000-0000-000000000000' AND Active = 1 FOR XML PATH('Group'), ROOT ('Groups') ...It returns this in the query analyzer:...<Groups> <Group> <GroupId>1</Gr...