ASP.NET WebApi OData support for DTOs

Question

I have Project entity and ProjectDTO. I\'m trying to create an WebAPI controller method that can take and return ProjectDTOs and make it support OData.

The problem i

Answer 1

Something like this (I haven't tried to compile it)

using(var dataContext = new ORM_Context())
{
    var projects = dataContext.Projects; // IQueryable

    //Create a set of ODataQueryOptions for the internal class
    ODataModelBuilder modelBuilder = new ODataConventionModelBuilder();
    modelBuilder.EntitySet("Project"); 
    var context = new ODataQueryContext(
         modelBuilder.GetEdmModel(), typeof(Project));
    var newOptions = new ODataQueryOptions(context, Request);

    var t = new ODataValidationSettings() { MaxTop = 25 };
    var s = new ODataQuerySettings() { PageSize = 25 };
    newOptions.Validate(t);
    IEnumerable internalResults =
        (IEnumerable)newOptions.ApplyTo(projects, s);

    int skip = newOptions.Skip == null ? 0 : newOptions.Skip.Value;
    int take = newOptions.Top == null ? 25 : newOptions.Top.Value;

    var projectDTOs =
            internalResults.Skip(skip).Take(take).Select(x =>
                new ProjectDTO
                    {
                        Id = x.Id,
                        Name = x.Name
                    });

    var projectsQueriedList = projectDtos.ToList();
    var result = new ODataQueryResult(
        projectsQueriedList, totalCount);
    return result;
}