Remotion.Linq.SqlBackend.MappingResolution.ResolvingJoinInfoVisitor.VisitUnresolvedCollectionJoinInfo C# (CSharp) Method

    public IJoinInfo VisitUnresolvedCollectionJoinInfo (UnresolvedCollectionJoinInfo joinInfo)
    {
      ArgumentUtility.CheckNotNull ("joinInfo", joinInfo);

      var resolvedExpression = _stage.ResolveCollectionSourceExpression (joinInfo.SourceExpression, _context);
      while (resolvedExpression is UnaryExpression)
        resolvedExpression = _stage.ResolveCollectionSourceExpression (((UnaryExpression)resolvedExpression).Operand, _context);

      var resolvedExpressionAsEntity = resolvedExpression as SqlEntityExpression;

      if (resolvedExpressionAsEntity != null)
      {
        var unresolvedJoinInfo = new UnresolvedJoinInfo (resolvedExpressionAsEntity, joinInfo.MemberInfo, JoinCardinality.Many);
        return unresolvedJoinInfo.Accept (this);
      }

      var message = string.Format (
          "Only entities can be used as the collection source in from expressions, '{0}' cannot. Member: '{1}'",
          FormattingExpressionTreeVisitor.Format (resolvedExpression),
          joinInfo.MemberInfo);
      throw new NotSupportedException (message);
    }