public bool MoveNext()
{
///if in duplicate mode.
if (inDuplicateMode)
{
Int64 nextdup = duplicatereader.ReadNext();
if (nextdup > 0)
{
this.currentValue = nextdup;
return(true);
}
else
{
// end of duplicate.
this.inDuplicateMode = false;
this.duplicatereader = null;
// cotinue with the getnextpointer;
}
}
NodePointer pointer = getnextpointer();
if (pointer == null)
{
return(false);
}
/// else
///
if (pointer.Indicator == EnumValues.TypeIndicator.block)
{
this.currentValue = pointer.PositionPointer;
return(true);
}
else if (pointer.Indicator == EnumValues.TypeIndicator.duplicate)
{
duplicatereader = this.treefile.duplicate.getReader(pointer.PositionPointer);
Int64 nextdup = duplicatereader.ReadNext();
if (nextdup > 0)
{
this.currentValue = nextdup;
this.inDuplicateMode = true;
return(true);
}
else
{
// there is no item in the duplicate, should not be possible, just to make sure.
this.duplicatereader = null;
this.inDuplicateMode = false;
// go to the next record again.
return(MoveNext());
}
}
else
{
/// should not be possible.
return(false);
}
}
public BtreeIndexDuplicateReader getReader(Int64 SectionStartPosition)
{
JumpRecord start = getStartPointerRecord(SectionStartPosition);
while (start != null && start.Buttom > 0)
{
start = getJumpRecord(start.Buttom);
}
BtreeIndexDuplicateReader reader = new BtreeIndexDuplicateReader(this, start);
return(reader);
}
public bool MoveNext()
{
/// if in duplicate mode. // TODO: this may not happend and should not care
/// becaust it returns the keys only.
if (inDuplicateMode)
{
byte[] nextdup = duplicatereader.ReadNextPointerBytes();
if (nextdup != null)
{
this.currentValue = nextdup;
return(true);
}
else
{ // end of duplicate.
this.inDuplicateMode = false;
this.duplicatereader = null;
// cotinue with the getnextpointer;
}
}
var record = getnextpointer();
// NodePointer pointer = getnextpointer();
if (record == null)
{
return(false);
}
else
{
this.currentValue = record.Key;
return(true);
}
///// else
//if (record.Pointer.Indicator == EnumValues.TypeIndicator.block)
//{
// this.currentValue = record.Key;
// return true;
//}
//else if (record.Pointer.Indicator == EnumValues.TypeIndicator.duplicate)
//{
// duplicatereader = this.treefile.duplicate.getReader(record.Pointer.PositionPointer);
// byte[] nextdup = duplicatereader.ReadNextPointerBytes();
// if (nextdup != null)
// {
// this.currentValue = nextdup;
// this.inDuplicateMode = true;
// return true;
// }
// else
// {
// // there is no item in the duplicate, should not be possible, just to make sure.
// this.duplicatereader = null;
// this.inDuplicateMode = false;
// // go to the next record again.
// return MoveNext();
// }
//}
//else
//{
// /// should not be possible.
// return false;
//}
}
