No deep traversal when parsing expression queries

[Alexabix]

I've written a method to create relationships that accepts generic types and I'm getting a NotSupportedException with the message

Unhandled node type MemberAccess in MemberExpression: Convert(value(Graph.WriteService+<>c__DisplayClass10_02[Graph.Nodes.Journey,Graph.Nodes.UserPath]).sourceNode, INode).Id`

It looks like the previously fixed issue mentioned here is back

https://stackoverflow.com/questions/19111052/node-byindexlookup-and-where-clause-throwing-exception

Here is the function throwing an exception, the fix is commented out.

        private async Task RelateTwoNodesIfNotReleated<TSource, TTarget>(TSource sourceNode, string relationshipName, TTarget targetNode)
            where TSource : INode where TTarget : INode
        {
            try
            {
                //var sourceId = sourceNode.Id;
                //var targetId = targetNode.Id;

                //var debugText = graphClient.Cypher
                //    .Match($"(source:{typeof(TSource).Name})")
                //    .Match($"(target:{typeof(TTarget).Name})")
                //    .Where((TSource source) => source.Id == sourceId)
                //    .AndWhere((TTarget target) => target.Id == targetId)
                //    .Create($"(source)-[:{relationshipName.ToUpper()}]->(target)").Query.DebugQueryText;

                await graphClient.Cypher
                .Match($"(source:{typeof(TSource).Name})")
                .Match($"(target:{typeof(TTarget).Name})")
                .Where((TSource source) => source.Id == sourceNode.Id)
                .AndWhere((TTarget target) => target.Id == targetNode.Id)
                .Create($"(source)-[:{relationshipName.ToUpper()}]->(target)").ExecuteWithoutResultsAsync();

            }
            catch (Exception ex2)
            {
                throw;
            }
        }

The INode interface just defines a Guid called Id

[cskardon]

Hello,

Please can you supply the following:

Versions:

• Neo4jClient [e.g. 4.0.0-preview10]
• Bolt or Http [e.g. BoltGraphClient]
• .NET Version [e.g. Core 2.1]
• Server Version [e.g. 4.1.1 Cluster]

Thanks

[Alexabix]

• Neo4jClient [e.g. 4.0.0-preview10] 4.1.4

• Bolt or Http [e.g. BoltGraphClient] Http like so graphClient = new GraphClient(new Uri("http://localhost:7474/"), username, password);

• .NET Version [e.g. Core 2.1] Neo4jClient is in a .NET Standard 2.1 project and being currently called from .NET Core 3.1 Console App

• Server Version [e.g. 4.1.1 Cluster] 4.2.1 Enterprise server via Neo4j Desktop 1.4.1

[cskardon]

Awesome thank you! I'll have a look and see what I can see

[cskardon]

This should be in the next version (4.1.5) - obvs - reopen if it's not fixed :/