Construction of EdmTypeKind very expensive

From the attached screenshot of the VisualVM sampler can be seen that construction of EdmTypeInfo instances is very expensive as EdmPrimitiveTypeKind.valueOf is used:

    try {
      primitiveType = EdmPrimitiveTypeKind.valueOf(typeName);
    } catch (final IllegalArgumentException e) {
      primitiveType = null;
    }

The problem here is the exception that is thrown if the value cannot be found. Suggesting to use a static Map to cache values, PR will be provided.