protected override Expression VisitIndexedColumn(SqlIndexedColumnExpression indexedColumnExpression)
{
if (indexedColumnExpression.LowercaseIndex)
{
this.Write("(lower(");
}
this.Visit(indexedColumnExpression.Column);
if (indexedColumnExpression.LowercaseIndex)
{
this.Write("))");
}
switch (indexedColumnExpression.SortOrder)
{
case SortOrder.Descending:
this.Write(" DESC");
break;
case SortOrder.Ascending:
this.Write(" ASC");
break;
case SortOrder.Unspecified:
break;
}
return(indexedColumnExpression);
}
protected virtual Expression VisitIndexedColumn(SqlIndexedColumnExpression indexedColumnExpression)
{
var newColumn = (SqlColumnExpression)this.Visit(indexedColumnExpression.Column);
if (newColumn != indexedColumnExpression.Column)
{
return(new SqlIndexedColumnExpression(newColumn, indexedColumnExpression.SortOrder, indexedColumnExpression.LowercaseIndex));
}
return(indexedColumnExpression);
}
protected override Expression VisitIndexedColumn(SqlIndexedColumnExpression indexedColumnExpression)
{
return(indexedColumnExpression);
}