public ColumnConditions this[Schema.TableVarColumn column]
{
get
{
int index = IndexOf(column);
if (index < 0)
{
ColumnConditions conditions = new ColumnConditions(column);
Add(conditions);
return(conditions);
}
else
{
return(this[index]);
}
}
}
protected bool IsValidScanOrder(Plan plan, Schema.Order order, Conditions closedConditions, Conditions openConditions, ColumnConditions scanCondition)
{
int columnIndex;
for (int index = 0; index < closedConditions.Count; index++)
{
columnIndex = order.Columns.IndexOf(closedConditions[index].Column.Name, Compiler.GetUniqueSort(plan, closedConditions[index].Column.DataType));
if ((columnIndex < 0) || (columnIndex >= closedConditions.Count))
{
return(false);
}
}
for (int index = 0; index < openConditions.Count; index++)
{
columnIndex = order.Columns.IndexOf(openConditions[index].Column.Name, Compiler.GetUniqueSort(plan, openConditions[index].Column.DataType));
if ((columnIndex < closedConditions.Count) || (columnIndex >= closedConditions.Count + openConditions.Count))
{
return(false);
}
}
if (scanCondition != null)
{
columnIndex = order.Columns.IndexOf(scanCondition.Column.Name, Compiler.GetUniqueSort(plan, scanCondition.Column.DataType));
if (columnIndex != (closedConditions.Count + openConditions.Count - 1))
{
return(false);
}
}
return(true);
}
