private void InsertResult(Session session, IPersistentStore store, RowSetNavigatorData nav, SqlType[] fromDataTypes, SqlType[] toDataTypes)
{
while (nav.HasNext())
{
object[] next = nav.GetNext();
for (int i = 0; i < next.Length; i++)
{
if (fromDataTypes[i].TypeCode != toDataTypes[i].TypeCode)
{
next[i] = fromDataTypes[i].ConvertToType(session, next[i], toDataTypes[i]);
}
}
base._table.InsertData(session, store, next);
}
}
public override void Materialise(Session session)
{
if (!this._matrializationOnProgress)
{
if (this.RecursiveQueryExpression == null)
{
base.Materialise(session);
}
else
{
this._matrializationOnProgress = true;
IRangeIterator[] iteratorArray = (IRangeIterator[])session.sessionContext.RangeIterators.Clone();
RowSetNavigatorData navigator = (RowSetNavigatorData)this.AnchorQueryExpression.GetResult(session, 0).GetNavigator();
IPersistentStore subqueryRowStore = session.sessionData.GetSubqueryRowStore(base._table);
base._table.ClearAllData(subqueryRowStore);
base._table.InsertFromNavigator(session, subqueryRowStore, navigator);
int num = 0;
SqlType[] columnTypes = this.AnchorQueryExpression.GetColumnTypes();
SqlType[] fromDataTypes = this.RecursiveQueryExpression.GetColumnTypes();
while (num++ < 0x2710)
{
RowSetNavigatorData other = (RowSetNavigatorData)this.RecursiveQueryExpression.GetResult(session, 0).GetNavigator();
if (other.GetSize() == 0)
{
other.Close();
break;
}
int size = navigator.GetSize();
int unionType = this.UnionType;
if (unionType == 1)
{
navigator.Union(other);
}
else
{
if (unionType != 2)
{
throw Error.RuntimeError(0xc9, "QueryExpression");
}
navigator.UnionAll(other);
}
base._table.ClearAllData(subqueryRowStore);
other.BeforeFirst();
this.InsertResult(session, subqueryRowStore, other, fromDataTypes, columnTypes);
other.Close();
if (size == navigator.GetSize())
{
break;
}
}
session.sessionContext.RangeIterators = iteratorArray;
if (base._uniqueRows)
{
navigator.RemoveDuplicates();
}
base._table.ClearAllData(subqueryRowStore);
this.InsertResult(session, subqueryRowStore, navigator, fromDataTypes, this.UnionDataTypes);
navigator.Close();
this._matrializationOnProgress = false;
}
}
}
public virtual Result GetResult(Session session, int maxRows)
{
int num = (this._unionType == 2) ? maxRows : 0;
Result result = this._leftQueryExpression.GetResult(session, num);
RowSetNavigatorData navigator = (RowSetNavigatorData)result.GetNavigator();
RowSetNavigatorData other = (RowSetNavigatorData)this._rightQueryExpression.GetResult(session, num).GetNavigator();
if (this._unionCorresponding)
{
bool flag1 = (session.ResultMaxMemoryRows == 0) || ((navigator.GetSize() < session.ResultMaxMemoryRows) && (other.GetSize() < session.ResultMaxMemoryRows));
RowSetNavigatorData data1 = flag1 ? new RowSetNavigatorData(session, this) : new RowSetNavigatorDataTable(session, this);
data1.Copy(navigator, this._leftQueryExpression.UnionColumnMap);
navigator = data1;
result.SetNavigator(navigator);
result.MetaData = this.GetMetaData();
RowSetNavigatorData data3 = flag1 ? new RowSetNavigatorData(session, this) : new RowSetNavigatorDataTable(session, this);
data3.Copy(other, this._rightQueryExpression.UnionColumnMap);
other = data3;
navigator.Reset();
other.Reset();
}
switch (this._unionType)
{
case 1:
navigator.Union(other);
break;
case 2:
navigator.UnionAll(other);
break;
case 3:
navigator.Intersect(other);
break;
case 4:
navigator.IntersectAll(other);
break;
case 5:
navigator.ExceptAll(other);
break;
case 6:
navigator.Except(other);
break;
default:
throw Error.RuntimeError(0xc9, "QueryExpression");
}
if (this.ExprSortAndSlice.HasOrder())
{
navigator.SortUnion(this.ExprSortAndSlice);
}
if (this.ExprSortAndSlice.HasLimit())
{
navigator.Trim(this.ExprSortAndSlice.GetLimitStart(session), this.ExprSortAndSlice.GetLimitCount(session, maxRows));
}
navigator.Reset();
return(result);
}
