//todo public void Reorganize() { Console.WriteLine("###REORGANIZATION###"); var NewMainReader = new MainReader("newmain", MainPageSize, Mode.New); var NewMainWriter = new MainWriter("newmain", MainPageSize, Mode.New); TempLong = OverflowAddress; ResetVariables(); AllocateEmptyPageAtTheEnd(ref NewMainWriter); MainPages++; FilePage newPage = NewMainReader.ReadNextPage(); Tuple <Record, long> entry; MainReader.Reader.Position = 0; //MainReader._count = false; while ((entry = MainReader.ReadNextEntryWithChaining()) != null) { if (entry.Item1.Key == long.MaxValue) { continue; } if (entry.Item1.Deleted) { continue; } if (newPage.Count >= Alpha * MainPageSize) { // insert new element to index // allocate new page NewMainWriter.WritePage(newPage); AllocateEmptyPageAtTheEnd(ref NewMainWriter); newPage = NewMainReader.ReadNextPage(); MainPages++; if (entry.Item1.Key != long.MaxValue) { IndexUnit.Entries.Add(new Tuple <long, long>(entry.Item1.Key, MainPages - 1)); } } newPage.Entries[(int)newPage.Count++] = new Tuple <Record, long>(entry.Item1, -1); MainRecordCount++; } NewMainWriter.WritePage(newPage); OverflowAddress = NewMainWriter.Writer.Position; AllocateEmptyPageAtTheEnd(ref NewMainWriter); // allocate overflow OverflowPages++; IndexUnit.Sort(); IndexUnit.WriteIndex(); MetaData.Save(); MainReader.Dispose(); MainWriter.Dispose(); NewMainReader.Dispose(); NewMainWriter.Dispose(); File.Delete(_filePath); File.Move("newmain", _filePath); MainReader = new MainReader(_filePath, MainPageSize, Mode.Read); MainWriter = new MainWriter(_filePath, MainPageSize, Mode.Read); }
public void PrintMainFile() { var mr = new MainReader(_filePath, MainPageSize, Mode.Read, false); { Console.WriteLine("Entries per page: " + MainPageSize); long entry = 0L; long countRecs = 0; Tuple <Record, long> i; while ((i = mr.ReadEntry(entry)) != null) { if (mr.LastPage.Count <= 0) { break; } if (mr.LastPage.Address >= MainReader.PageNumberFromAddress(OverflowAddress)) { break; } if (countRecs >= MainPageSize) { countRecs = 1; Console.WriteLine(); } else { countRecs++; } Console.WriteLine(EntryToString(i)); if (i.Item2 != -1) { FollowChain(i.Item2, ref mr); } entry++; } } mr.Dispose(); }