protected virtual void InitialiseIterator()
{
if (this.CondIndex == 0)
{
this.HasLeftOuterRow = base.RangeVar.IsLeftJoin;
}
if (this.Conditions[this.CondIndex].IsFalse)
{
base.It = this.Conditions[this.CondIndex].RangeIndex.GetEmptyIterator();
}
else
{
SubQuery subQuery = base.RangeVar.RangeTable.GetSubQuery();
if (subQuery != null)
{
subQuery.MaterialiseCorrelated(base.session);
}
if (this.Conditions[this.CondIndex].IndexCond == null)
{
base.It = this.Conditions[this.CondIndex].Reversed ? this.Conditions[this.CondIndex].RangeIndex.LastRow(base.session, base.Store) : this.Conditions[this.CondIndex].RangeIndex.FirstRow(base.session, base.Store);
}
else
{
this.GetFirstRow();
if (!this.Conditions[this.CondIndex].IsJoin)
{
this.HasLeftOuterRow = false;
}
}
}
}