/// <inheritdoc />
public override bool TryTranslate(ODataTemplateTranslateContext context)
{
if (context == null)
{
throw Error.ArgumentNull(nameof(context));
}
RouteValueDictionary routeValues = context.RouteValues;
// the request should have the navigation property
if (!routeValues.TryGetValue(ParameterName, out object rawValue))
{
return(false);
}
string navigationProperty = rawValue as string;
if (navigationProperty == null)
{
return(false);
}
// Find the navigation property
IEdmNavigationProperty edmNavProperty = DeclaringType.ResolveProperty(navigationProperty) as IEdmNavigationProperty;
if (edmNavProperty == null)
{
return(false);
}
IEdmNavigationSource targetNavigationSource = NavigationSource.FindNavigationTarget(edmNavProperty);
// ODL implementation is complex, here i just use the NavigationPropertyLinkSegment
context.Segments.Add(new NavigationPropertyLinkSegment(edmNavProperty, targetNavigationSource));
if (RelatedKey != null)
{
IEdmEntityType entityType = edmNavProperty.ToEntityType();
// only handle the single key
IEdmStructuralProperty keyProperty = entityType.Key().SingleOrDefault();
Contract.Assert(entityType.Key().Count() == 1);
Contract.Assert(keyProperty != null);
IDictionary <string, string> keyValuePairs = new Dictionary <string, string>
{
{ keyProperty.Name, $"{{{RelatedKey}}}" }
};
KeySegmentTemplate keySegment = new KeySegmentTemplate(keyValuePairs, entityType, targetNavigationSource);
return(keySegment.TryTranslate(context));
}
return(true);
}