Raven4 : Querying index error

[Dejan Miličić]

I am trying to convert code that is already working with 3.5 to version 4. This method

        public List<string> GetCorrespondents(IDocumentSession session, User user)

        {

            return session.Query<CorrespondentsPerUser.Result, CorrespondentsPerUser.Index>()

                .Where(x => x.UserId == user.Id)

                .OrderByDescending(x => x.Cardinality).ThenByDescending(x => x.Timestamp)

                .Select(a => a.CorrespondentId)

                .ToList();

        }

generates this exception

TargetException: Non-static method requires a target.

• System.Reflection.RuntimeMethodInfo.CheckConsistency(object target)

• System.Reflection.RuntimeMethodInfo.InvokeArgumentsCheck(object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)

• System.Reflection.RuntimeMethodInfo.Invoke(object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)

• System.Reflection.RuntimePropertyInfo.GetValue(object obj, Object[] index)

• Raven.Client.Documents.Linq.LinqPathProvider.GetValueFromExpressionWithoutConversion(Expression expression, out object value)

• Raven.Client.Documents.Linq.LinqPathProvider.GetValueFromExpression(Expression expression, Type type)

• Raven.Client.Documents.Linq.RavenQueryProviderProcessor.VisitEquals(BinaryExpression expression)

• Raven.Client.Documents.Linq.RavenQueryProviderProcessor.VisitQueryableMethodCall(MethodCallExpression expression)

• Raven.Client.Documents.Linq.RavenQueryProviderProcessor.VisitMethodCall(MethodCallExpression expression, bool negated)

• Raven.Client.Documents.Linq.RavenQueryProviderProcessor.VisitQueryableMethodCall(MethodCallExpression expression)

• Raven.Client.Documents.Linq.RavenQueryProviderProcessor.VisitMethodCall(MethodCallExpression expression, bool negated)

• Raven.Client.Documents.Linq.RavenQueryProviderProcessor.VisitQueryableMethodCall(MethodCallExpression expression)

• Raven.Client.Documents.Linq.RavenQueryProviderProcessor.VisitMethodCall(MethodCallExpression expression, bool negated)

• Raven.Client.Documents.Linq.RavenQueryProviderProcessor.VisitQueryableMethodCall(MethodCallExpression expression)

• Raven.Client.Documents.Linq.RavenQueryProviderProcessor.VisitMethodCall(MethodCallExpression expression, bool negated)

• Raven.Client.Documents.Linq.RavenQueryProviderProcessor.GetDocumentQueryFor(Expression expression)

• Raven.Client.Documents.Linq.RavenQueryProviderProcessor.Execute(Expression expression)

• Raven.Client.Documents.Linq.RavenQueryInspector.GetEnumerator()

• System.Collections.Generic.List..ctor(IEnumerable<T> collection)

• System.Linq.Enumerable.ToList<TSource>(IEnumerable<TSource> source)

However, if I comment out "Where" like this

        public List<string> GetCorrespondents(IDocumentSession session, User user)

        {

            return session.Query<CorrespondentsPerUser.Result, CorrespondentsPerUser.Index>()

                //.Where(x => x.UserId == user.Id)

                .OrderByDescending(x => x.Cardinality).ThenByDescending(x => x.Timestamp)

                .Select(a => a.CorrespondentId)

                .ToList();

        }

I receive no exception

Probably important info is that this happens when application is started, so there are no documents that are indexed by this index, and as a result of that, index is empty

[Michael Yarichuk]

Hi,

I will take a look at this.

Can you post index and entity definitions that are used here?

Also, is it possible to reproduce this in unit test?

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[Dejan Miličić]

After I did not manage to reproduce problem with unit test, I realized cause of this is in my code and completely unrelated to Raven4.

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[Oren Eini (Ayende Rahien)]

Okay, can you explain what happened, we might be able to give a better error

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Oren Eini l CEO l Mobile: + 972-52-548-6969

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[Dejan Miličić]

My application is using MediatR (https://github.com/jbogard/MediatR) and Hangfire with RavenDB persistence (https://github.com/RefreshingIO/hangfire-ravendb)

After upgrading Ravendb client to version 4, Hangfire.RavenDB stopped working since it is not yet supporting Raven4.

Instead of uninstalling Hangfire nuget package, I commented out all calls, but I missed one, which was not giving any visible exceptions but resulted in non of Mediatr handlers being registered.

And that was the cause of the problem.

Once I removed Hangfire nuget package everything was working again.

I will probably update Hangfire.Raven4 to new version when I catch some time.

However, just like last time I tried Raven4, I have one blocker that is preventing me from switching to Raven4.

store.Conventions.CustomizeJsonSerializer += serializer => serializer.Converters.Add(new JsonNodaMoneyConverter());

This custom converter is never called at all. One of the classes in the project has property of type NodaMoney, and this serializer should be triggered for it, but when I debug, it is simply not invoked.

Could it be because NodaMoney is struct?

[Oren Eini (Ayende Rahien)]

Hm.. that should work 

Are you calling this _after_ the store has been initialized?

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[Dejan Miličić]

Here is how I do it

        private static IDocumentStore CreateStore()

        {

            var store = new DocumentStore();

            store.Urls = new string[] {Url};

            store.Database = DatabaseName;

            store.Conventions.CustomizeJsonSerializer += serializer => serializer.Converters.Add(new JsonNodaMoneyConverter());

            store.Initialize();

            return store;

[Oren Eini (Ayende Rahien)]

Can you send us the full test case? I tried with the attached code, and it seems to be working:

http://4.live-test.ravendb.net/studio/index.html#databases/edit?&id=MyItems%2F1-A&database=Demo

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