EMF Model and IDE for DBC format
http://pizzafactory.github.io/CanDbc/p2repo/8.5/
PizzaFactory 8.5 + modeling features
Mayby this works on Eclipse 4.4.2 (Luna) also.
This package is contributed by Monami-ya LLC. It is released under EPL-1.0. But they released binaries only. So you have permissions for "Contribution" discribed in EPL-1.0.
But Monami-ya LLC don't contribute sources. They sells whole sources under their proprietary license. Please ask them for more detalis.