Remotion.Linq.SqlBackend.SqlPreparation.SqlPreparationFromExpressionVisitor.VisitQuerySourceReferenceExpression C# (CSharp) Method

    protected override Expression VisitQuerySourceReferenceExpression (QuerySourceReferenceExpression expression)
    {
      var groupJoinClause = expression.ReferencedQuerySource as GroupJoinClause;
      if (groupJoinClause != null)
      {
        var fromExpressionInfo = AnalyzeFromExpression (
            groupJoinClause.JoinClause.InnerSequence,
            Stage,
            _generator,
            MethodCallTransformerProvider,
            Context,
            _tableGenerator);

        Context.AddExpressionMapping (new QuerySourceReferenceExpression (groupJoinClause.JoinClause), fromExpressionInfo.ItemSelector);

        var whereCondition =
            Stage.PrepareWhereExpression (
                Expression.Equal (groupJoinClause.JoinClause.OuterKeySelector, groupJoinClause.JoinClause.InnerKeySelector), Context);

        if (fromExpressionInfo.WhereCondition != null)
          whereCondition = Expression.AndAlso (fromExpressionInfo.WhereCondition, whereCondition);

        FromExpressionInfo = new FromExpressionInfo (
            fromExpressionInfo.SqlTable,
            fromExpressionInfo.ExtractedOrderings.ToArray(),
            fromExpressionInfo.ItemSelector,
            whereCondition);

        return new SqlTableReferenceExpression (fromExpressionInfo.SqlTable);
      }

      return base.VisitQuerySourceReferenceExpression (expression);
    }