public virtual void Dispose() { if (Pos != 0) { FlushBuffer(); } _transaction.SetValueSize(_ofs); }
public void SetValueSize(long newSize) { lock (_log) { _log.WriteUInt8((byte)KVReplayOperation.SetValueSize); _log.WriteVUInt32(TrIndex); _log.WriteVInt64(newSize); _log.FlushBuffer(); } _tr.SetValueSize(newSize); }
/// <summary> /// Reads and inserts all key value pairs into current prefix from stream /// </summary> /// <param name="transaction">transaction where to import all data</param> /// <param name="stream">where to read it from</param> public static void Import(IKeyValueDBTransaction transaction, Stream stream) { if (transaction == null) throw new ArgumentNullException("transaction"); if (stream == null) throw new ArgumentNullException("stream"); if (!stream.CanRead) throw new ArgumentException("stream must be readable", "stream"); var tempbuf = new byte[4096]; if (stream.Read(tempbuf, 0, 16) != 16) throw new EndOfStreamException(); if (tempbuf[0] != 'B' || tempbuf[1] != 'T' || tempbuf[2] != 'D' || tempbuf[3] != 'B' || tempbuf[4] != 'E' || tempbuf[5] != 'X' || tempbuf[6] != 'P' || tempbuf[7] != '1') { throw new BTDBException("Invalid header (it should start with BTDBEXP1)"); } var keyValuePairs = PackUnpack.UnpackInt64LE(tempbuf, 8); if (keyValuePairs < 0) throw new BTDBException("Negative number of key value pairs"); for (var kv = 0; kv < keyValuePairs; kv++) { if (stream.Read(tempbuf, 0, 4) != 4) throw new EndOfStreamException(); var keySize = PackUnpack.UnpackInt32LE(tempbuf, 0); if (keySize < 0) throw new BTDBException("Negative key size"); if (keySize > tempbuf.Length) tempbuf = new byte[keySize]; if (stream.Read(tempbuf, 0, keySize) != keySize) throw new EndOfStreamException(); transaction.CreateKey(tempbuf); if (stream.Read(tempbuf, 0, 8) != 8) throw new EndOfStreamException(); var valueSize = PackUnpack.UnpackInt64LE(tempbuf, 0); if (valueSize < 0) throw new BTDBException("Negative value size"); if (valueSize <= tempbuf.Length) { if (stream.Read(tempbuf, 0, (int)valueSize) != valueSize) throw new EndOfStreamException(); transaction.SetValue(tempbuf, 0, (int)valueSize); } else { transaction.SetValueSize(valueSize); long pos = 0; while (pos < valueSize) { int toRead = (int)Math.Min(valueSize - pos, tempbuf.Length); if (stream.Read(tempbuf, 0, toRead) != toRead) throw new EndOfStreamException(); transaction.WriteValue(pos,toRead,tempbuf,0); pos += toRead; } } } }
/// <summary> /// Reads and inserts all key value pairs into current prefix from stream /// </summary> /// <param name="transaction">transaction where to import all data</param> /// <param name="stream">where to read it from</param> public static void Import(IKeyValueDBTransaction transaction, Stream stream) { if (transaction == null) { throw new ArgumentNullException("transaction"); } if (stream == null) { throw new ArgumentNullException("stream"); } if (!stream.CanRead) { throw new ArgumentException("stream must be readable", "stream"); } var tempbuf = new byte[4096]; if (stream.Read(tempbuf, 0, 16) != 16) { throw new EndOfStreamException(); } if (tempbuf[0] != 'B' || tempbuf[1] != 'T' || tempbuf[2] != 'D' || tempbuf[3] != 'B' || tempbuf[4] != 'E' || tempbuf[5] != 'X' || tempbuf[6] != 'P' || tempbuf[7] != '1') { throw new BTDBException("Invalid header (it should start with BTDBEXP1)"); } var keyValuePairs = PackUnpack.UnpackInt64LE(tempbuf, 8); if (keyValuePairs < 0) { throw new BTDBException("Negative number of key value pairs"); } for (var kv = 0; kv < keyValuePairs; kv++) { if (stream.Read(tempbuf, 0, 4) != 4) { throw new EndOfStreamException(); } var keySize = PackUnpack.UnpackInt32LE(tempbuf, 0); if (keySize < 0) { throw new BTDBException("Negative key size"); } if (keySize > tempbuf.Length) { tempbuf = new byte[keySize]; } if (stream.Read(tempbuf, 0, keySize) != keySize) { throw new EndOfStreamException(); } transaction.CreateKey(tempbuf); if (stream.Read(tempbuf, 0, 8) != 8) { throw new EndOfStreamException(); } var valueSize = PackUnpack.UnpackInt64LE(tempbuf, 0); if (valueSize < 0) { throw new BTDBException("Negative value size"); } if (valueSize <= tempbuf.Length) { if (stream.Read(tempbuf, 0, (int)valueSize) != valueSize) { throw new EndOfStreamException(); } transaction.SetValue(tempbuf, 0, (int)valueSize); } else { transaction.SetValueSize(valueSize); long pos = 0; while (pos < valueSize) { int toRead = (int)Math.Min(valueSize - pos, tempbuf.Length); if (stream.Read(tempbuf, 0, toRead) != toRead) { throw new EndOfStreamException(); } transaction.WriteValue(pos, toRead, tempbuf, 0); pos += toRead; } } } }