C# (CSharp) System.Data.Common.CommandTrees.ExpressionBuilder.DbExpressionBuilder.CreateIsNullExpressionAllowingRowTypeArgument Examples

Example #1

File: DefaultExpressionVisitor.cs Project: kaobeixingfu/DotNetReferenceSource

        public override DbExpression Visit(DbIsNullExpression expression)
        {
            EntityUtil.CheckArgumentNull(expression, "expression");

            return(VisitUnary(expression, exp =>
            {
                if (TypeSemantics.IsRowType(exp.ResultType))
                {
                    //
                    return CqtBuilder.CreateIsNullExpressionAllowingRowTypeArgument(exp);
                }
                else
                {
                    return CqtBuilder.IsNull(exp);
                }
            }
                              ));
        }