public IBetaNode <T, T> BuildJoinNode <T>(BuilderContext context)
where T : class
{
using (_logger.BeginScope($"{nameof(BuildJoinNode)}<{typeof(T).Name}>"))
{
var betaSource = (context.BetaSource ?? new DummyNode <T>()) as ITupleSource <T>;
var alphaSource = context.AlphaSource as IFactSource <T>;
_logger.LogDebug($"Creating join node: {typeof(T).Name}");
var node = new JoinNode <T, T>(betaSource, alphaSource, new BetaCondition <T, T>((x, y) => true));
context.BetaSource = node.MemoryNode;
context.ClearAlphaSource();
return(node);
}
}