Self referencing loop detected for property 'ManifestModule'

booler

Vote:

Hi,

We are getting the same error stacktrace described in this post:

http://world.episerver.com/forum/developer-forum/EPiServer-Search/Thread-Container/2014/8/Indexing-issues/

But we're getting it when attempting to do a nested search in Find. We have a nested convention applied:

SearchClient.Instance.Conventions.NestedConventions.ForType().Add(v => v.ListingDates);

Where listing dates is a collection of a custom object type.

And in the search query:

            DateTime now = DateTime.Now;

            var exp = new NestedFilterExpression(
                item => item.ListingDates, 
                item => item.ListedFrom.Exists() & item.ListedFrom.LessThan(now) & item.ListedTo.Exists() & item.ListedTo.LessThan(now), 
                SearchClient.Instance.Conventions);

            return new FilterExpression(x =>
                x.MatchType(typeof(Variant.Models.Variant)) &
                ((Variant.Models.Variant)x).ListingDates.MatchItem(item => exp));

It blows up with the error text 'Self referencing loop detected for property 'ManifestModule' - the JSON.NET serializer seems to be choking on a recursive reference within the Assembly, though why it's trying to serialize the assembly I have no idea!

Any pointers appreciated as to whether this is a bug or a problem with the way we're using Find.

#152621

Aug 26, 2016 12:22

Daniel Ovaska

Vote:

Can you add code for the classes Variant and ListingDates. Do they have navigation properties going both ways?

#152626

Aug 26, 2016 12:36

booler

Vote:

Hi Daniel,

No, they don't - the ProductListingDateRange class has just 3 properties:

    public class ProductListingDateRange
    {

        public virtual string MarketId { get; set; }

        public virtual DateTime? ListedFrom { get; set; }

        public virtual DateTime? ListedTo { get; set; }


    }

And the variant class exposes a collection of these as an IEnumerable.

Thanks

#152627

Edited, Aug 26, 2016 12:44

Peter Gustafsson

Vote:

I had a similar issue and I solved it by using the NestedFilter property on my NestedFilterExpression

So try changing your return statement to this.

return new FilterExpression<IContent>(x =>
    x.MatchType(typeof(Variant.Models.Variant)) &
    ((Variant.Models.Variant)x).ListingDates.MatchItem(item => exp.NestedFilter));

#154944

Sep 02, 2016 20:55