在存储库模式中从Inteface调用存储过程EF6＆MVC

Question

I am using MVC 5 and Entity Framework 6 Database First approach.

I cannot find an example of calling a stored procedure in the interface and the return type is another problem as for example:

My Select is as follows

Create Procedure pcdSELECTEMPLOYEE

@Del bit

AS

SELECT * FROM EMPLOYEE WHERE @Del = EMPLOYEE.DEL

GO

Del is a flag field used for deleting in the database for best practice.

So, my get all or even get by ID involves this:

I have from EF a [GET/SET class] for employee A context class that has the stored procedure

I need help with IRepository.cs and Repository.cs calling the Context.pcdSELECTEMPLOYEE or Context.pcdSELECTEMPLOYEEBYID

What objects do I set in the interphace for return types or anything?

public interface IRepository<T>
{
    IQueryable<T> GetAll();
    // other CRUD methods here...
} 

Please help this would be much appreciated

Thanks

Entity Framework creates the following public virtual

ObjectResult<pcdSelectStaffBID_Result>pcdSelectStaffBID(Nullable<int> iD)
        {
            var iDParameter = iD.HasValue ?
                new ObjectParameter("ID", iD) :
                new ObjectParameter("ID", typeof(int));

            return ((IObjectContextAdapter)this).ObjectContext.ExecuteFunction<pcdSelectStaffBID_Result>("pcdSelectStaffBID", iDParameter);
        }

Answer 1

If you are using the repository pattern, then you'll have a UnitOfWork class. The calls to your stored procedures should be placed in the UnitOfWork class.

As for the return type, when you create the Function Import in Entity Framework, you can select the Employee class as the return type for each item in the collection that's returned by your stored procedure. The stored procedure return a collection of Employees.

If your stored procedure returned only a subset of the columns from the Employee table, then you would not be able to choose the Employee class. In that case, Entity Framework would create a Complex Type for you.

Answer 2

You may create you own EFRepository class which implements IRepository, and in GetAll() do like this if( T.Gettype()=typeof(Employee)) { _dbContext.SqlQuery<Employee>(sqltext, params).ToArray(); } if( T.Gettype()=typeof(Employee)) { _dbContext.SqlQuery<Employee>(sqltext, params).ToArray(); } You also can use attributes on Entities not to hard code :)

• I use public IQueryable<T> GetAll(Expression<Func<T, bool>> predicate = null) { return (predicate == null) ? _context.Set<T>() : _context.Set<T>().Where(predicate); } public IQueryable<T> GetAll(Expression<Func<T, bool>> predicate = null) { return (predicate == null) ? _context.Set<T>() : _context.Set<T>().Where(predicate); } public IQueryable<T> GetAll(Expression<Func<T, bool>> predicate = null) { return (predicate == null) ? _context.Set<T>() : _context.Set<T>().Where(predicate); } to filter on db level