QueryInterceptor: Adding a Filter based on Interface

Works perfectly. Thanks again.

Greg

Kim, I have been using the above and it works great. But I haven't figured out how to make this one work:

     QueryFilters.AddFilter<IAuditEntityBase>(q => q.Where(c => principal.Authorizations.Contains(c.OwnedBy)));

I tried writing it similar to the above, but an error message is returned saying that it only works with a string. Principal.Authorizations is a List<int> of authorizations.

Greg

Filtering by interface is not currently supported. We have a feature request to support this, but it hasn't yet been implemented.

As a workaround, albeit heavy-handed, you can do something like this:

foreach (var t in ReflectionFns.GetTypesImplementing(typeof(IDeletable), CompositionHost.Instance.ProbeAssemblies))
   this.QueryFilters.AddFilter(new PredicateDescription(t, "IsDeleted", FilterOperator.IsEqualTo, false));

Or this:

if (typeof(IDeletable).IsAssignableFrom(this.Query.QueryableType))
   this.QueryFilters.AddFilter(new PredicateDescription(this.Query.QueryableType, "IsDeleted", FilterOperator.IsEqualTo, false));