There are no implemented interfaces.
There are no attributes in this class.
checkData(th, tpos, dh, pos)
checkTxn(th, pos)
copyDataRecords(pos, th)
Copy any current data records between pos and tend.
Returns position of txn header in output file and position of next record in the input file.
If any data records are copied, also write txn header (th).
copyOne(ipos)
copyRest(ipos)
copyToPacktime()
fail(pos, msg, *args)
fetchBackpointer(oid, back)
Return data and refs backpointer `back` to object `oid.
If `back` is 0 or ultimately resolves to 0, return None and None. In this case, the transaction undoes the object creation.
getTxnFromData(oid, back)
Return transaction id for data at back.
pack()
writePackedDataRecord(h, data, new_tpos)
There are no known subclasses.