public NodeAVL Last(Session session, IPersistentStore store, NodeAVL x)
{
if (x == null)
{
return(null);
}
lock (this._lock)
{
Label_0012:
x = this.Last(store, x);
if (x != null)
{
if (session == null)
{
return(x);
}
Row row = x.GetRow(store);
if (!session.database.TxManager.CanRead(session, row, 0, null))
{
goto Label_0012;
}
}
else
{
return(x);
}
return(x);
}
}
public IRowIterator FirstRow(Session session, IPersistentStore store)
{
IRowIterator iterator;
int num = 0;
Monitor.Enter(this._lock);
try
{
NodeAVL accessor = this.GetAccessor(store);
NodeAVL left = accessor;
while (left != null)
{
accessor = left;
left = accessor.GetLeft(store);
num++;
}
while ((session != null) && (accessor != null))
{
Row row = accessor.GetRow(store);
if (session.database.TxManager.CanRead(session, row, 0, null))
{
break;
}
accessor = this.Next(store, accessor);
}
iterator = this.GetIterator(session, store, accessor, false, false);
}
finally
{
this.Depth = num;
Monitor.Exit(this._lock);
}
return(iterator);
}
protected bool IsEqualReadable(Session session, IPersistentStore store, NodeAVL node)
{
object[] data;
NodeAVL x = node;
if (!session.database.TxManager.CanRead(session, node.GetRow(store), 1, null))
{
Row row;
data = node.GetData(store);
do
{
x = this.Last(store, x);
if (x == null)
{
goto Label_006E;
}
object[] data = x.GetData(store);
if (this.CompareRow(session, data, data) != 0)
{
goto Label_006E;
}
row = x.GetRow(store);
}while (!session.database.TxManager.CanRead(session, row, 1, null));
}
return(true);
Label_006E:
x = this.Next(session, store, node);
if (x != null)
{
object[] data = x.GetData(store);
if (this.CompareRow(session, data, data) != 0)
{
return(false);
}
Row row = x.GetRow(store);
if (!session.database.TxManager.CanRead(session, row, 1, null))
{
goto Label_006E;
}
}
else
{
return(false);
}
return(true);
}
public IRowIterator LastRow(Session session, IPersistentStore store)
{
lock (this._lock)
{
NodeAVL accessor = this.GetAccessor(store);
for (NodeAVL eavl2 = accessor; eavl2 != null; eavl2 = accessor.GetRight(store))
{
accessor = eavl2;
}
while ((session != null) && (accessor != null))
{
Row row = accessor.GetRow(store);
if (session.database.TxManager.CanRead(session, row, 0, null))
{
break;
}
accessor = this.Last(store, accessor);
}
return(this.GetIterator(null, store, accessor, false, true));
}
}
public virtual void Insert(Session session, IPersistentStore store, Row row)
{
bool useRowId = !this.isUnique || this.HasNulls(row.RowData);
Monitor.Enter(this._lock);
store.LockStore();
try
{
bool flag2;
NodeAVL eavl2;
Constraint uniqueConstraintForIndex;
Row row2;
RowAVL wavl = (RowAVL)row;
NodeAVL accessor = this.GetAccessor(store);
if (accessor == null)
{
store.SetAccessor(this, wavl.GetNode(this.Position));
store.SetElementCount(this, 1, 1);
return;
}
Label_005C:
row2 = accessor.GetRow(store);
int num = this.CompareRowForInsertOrDelete(session, row, row2, useRowId, 0);
if ((((num == 0) && (session != null)) && (!useRowId && session.database.TxManager.IsMvRows())) && !this.IsEqualReadable(session, store, accessor))
{
useRowId = true;
num = this.CompareRowForInsertOrDelete(session, row, row2, useRowId, this.ColIndex.Length);
}
if (num != 0)
{
flag2 = num < 0;
eavl2 = accessor;
accessor = eavl2.Child(store, flag2);
if (accessor != null)
{
goto Label_005C;
}
}
else
{
uniqueConstraintForIndex = null;
if (this.isConstraint)
{
uniqueConstraintForIndex = ((Table)this.table).GetUniqueConstraintForIndex(this);
}
goto Label_0119;
}
eavl2 = eavl2.Set(store, flag2, wavl.GetNode(this.Position));
this.Balance(store, eavl2, flag2);
store.UpdateElementCount(this, 1, 1);
return;
Label_0119:
if (uniqueConstraintForIndex == null)
{
throw Error.GetError(0x68, this.Name.StatementName);
}
throw uniqueConstraintForIndex.GetException(row.RowData);
}
finally
{
store.UnlockStore();
Monitor.Exit(this._lock);
}
}
private NodeAVL FindNode(Session session, IPersistentStore store, object[] rowdata, int[] rowColMap, int fieldCount, int compareType, int readMode, bool reversed)
{
NodeAVL eavl;
lock (this._lock)
{
Row row2;
NodeAVL accessor = this.GetAccessor(store);
NodeAVL left = null;
NodeAVL x = null;
if ((compareType != 0x29) && (compareType != 0x2f))
{
fieldCount--;
}
while (accessor != null)
{
Row row = accessor.GetRow(store);
int num = 0;
if (fieldCount > 0)
{
num = this.CompareRowNonUnique(session, row.RowData, rowdata, rowColMap, fieldCount);
}
if (num != 0)
{
goto Label_017B;
}
switch (compareType)
{
case 0x29:
case 0x2f:
x = accessor;
left = accessor.GetLeft(store);
goto Label_0197;
case 0x2a:
if (this.CompareObject(session, row.RowData, rowdata, rowColMap, fieldCount) >= 0)
{
break;
}
left = accessor.GetRight(store);
goto Label_0197;
case 0x2b:
case 0x30:
if (this.CompareObject(session, row.RowData, rowdata, rowColMap, fieldCount) > 0)
{
goto Label_00FC;
}
left = accessor.GetRight(store);
goto Label_0197;
case 0x2c:
if (this.CompareObject(session, row.RowData, rowdata, rowColMap, fieldCount) >= 0)
{
goto Label_0131;
}
x = accessor;
left = accessor.GetRight(store);
goto Label_0197;
case 0x2d:
if (this.CompareObject(session, row.RowData, rowdata, rowColMap, fieldCount) > 0)
{
goto Label_0161;
}
x = accessor;
left = accessor.GetRight(store);
goto Label_0197;
default:
throw Error.RuntimeError(0xc9, "Index");
}
x = accessor;
left = accessor.GetLeft(store);
goto Label_0197;
Label_00FC:
x = accessor;
left = accessor.GetLeft(store);
goto Label_0197;
Label_0131:
left = accessor.GetLeft(store);
goto Label_0197;
Label_0161:
left = accessor.GetLeft(store);
goto Label_0197;
Label_017B:
if (num < 0)
{
left = accessor.GetRight(store);
}
else if (num > 0)
{
left = accessor.GetLeft(store);
}
Label_0197:
if (left == null)
{
break;
}
accessor = left;
}
if (session != null)
{
goto Label_0210;
}
return(x);
Label_01A9:
row2 = x.GetRow(store);
if (session.database.TxManager.CanRead(session, row2, readMode, this.ColIndex))
{
goto Label_0213;
}
x = reversed ? this.Last(store, x) : this.Next(store, x);
if (x == null)
{
goto Label_0213;
}
row2 = x.GetRow(store);
if ((fieldCount > 0) && (this.CompareRowNonUnique(session, row2.RowData, rowdata, rowColMap, fieldCount) != 0))
{
x = null;
goto Label_0213;
}
Label_0210:
if (x != null)
{
goto Label_01A9;
}
Label_0213:
eavl = x;
}
return(eavl);
}
