So I’ve started using OData in anger and pretty much immediately stumbled on a problem when using Data Transfer Objects (DTOs). This post explains that problem and the solution.

Problem

The following error is encountered when trying to access the exposed entity by key:

No routing convention was found to select an action for the OData path with template '~/entityset/key'.","type":""

Cause Code

OData configuration

Here I show the simple entity I’m exposing

Timesheet Controller

Here you can see that the underlying timesheets are just projected using Automapper to their DTO counterparts

Automapper config

Here I show the automapper configuration (not that it’s makes any difference to the problem encountered)

Solution

To fix this problem I needed to set the EntityType.Name property on my OData entity type.

And thereafter, success!

If you ever come across the problem of the IntelliJ Application Servers menu greyed out like this:

This is simply because you need at least one Run Configuration.

I’m using JBoss just now so here’s what I do to add a run config:

Once this is done you can now see your application servers tools window menu item becomes enabled.