public RelationAdvancedEnumerator( IRelationDbManipulator manipulator, ByteBuffer prefixBytes, uint prefixFieldCount, int loaderIndex) { _prefixFieldCount = prefixFieldCount; _manipulator = manipulator; ItemLoader = _manipulator.RelationInfo.ItemLoaderInfos[loaderIndex]; _ascending = true; _tr = manipulator.Transaction; _keyValueTr = _tr.KeyValueDBTransaction; _keyValueTrProtector = _tr.TransactionProtector; _prevProtectionCounter = _keyValueTrProtector.ProtectionCounter; _keyBytes = prefixBytes; _keyValueTrProtector.Start(); _keyValueTr.SetKeyPrefix(_keyBytes); _prevModificationCounter = manipulator.ModificationCounter.ModificationCounter; _count = (uint)_keyValueTr.GetKeyValueCount(); _startPos = _ascending ? 0 : _count - 1; _pos = 0; _seekNeeded = true; _lengthOfNonDataPrefix = manipulator.RelationInfo.Prefix.Length; }
public RelationEnumerator(IInternalObjectDBTransaction tr, RelationInfo relationInfo, ByteBuffer keyBytes) { RelationInfo = relationInfo; _tr = tr; _keyValueTr = _tr.KeyValueDBTransaction; _keyValueTrProtector = _tr.TransactionProtector; _prevProtectionCounter = _keyValueTrProtector.ProtectionCounter; KeyBytes = keyBytes; _keyValueTr.SetKeyPrefix(KeyBytes); _pos = 0; _seekNeeded = true; _prevModificationCounter = relationInfo.ModificationCounter; }
public ODBDictionary(IInternalObjectDBTransaction tr, ODBDictionaryConfiguration config, ulong id) { _tr = tr; _keyHandler = config.KeyHandler; _valueHandler = config.ValueHandler; _id = id; GeneratePrefix(); _keyReader = (Func <AbstractBufferedReader, IReaderCtx, TKey>)config.KeyReader; _keyWriter = (Action <TKey, AbstractBufferedWriter, IWriterCtx>)config.KeyWriter; _valueReader = (Func <AbstractBufferedReader, IReaderCtx, TValue>)config.ValueReader; _valueWriter = (Action <TValue, AbstractBufferedWriter, IWriterCtx>)config.ValueWriter; _keyValueTr = _tr.KeyValueDBTransaction; _keyValueTrProtector = _tr.TransactionProtector; _count = -1; }
public ODBSet(IInternalObjectDBTransaction tr, ODBDictionaryConfiguration config, ulong id) { _tr = tr; _keyHandler = config.KeyHandler; _id = id; var o = ObjectDB.AllDictionariesPrefix.Length; _prefix = new byte[o + PackUnpack.LengthVUInt(_id)]; Array.Copy(ObjectDB.AllDictionariesPrefix, _prefix, o); PackUnpack.PackVUInt(_prefix, ref o, _id); _keyReader = ((Func <AbstractBufferedReader, IReaderCtx, TKey>)config.KeyReader) !; _keyWriter = ((Action <TKey, AbstractBufferedWriter, IWriterCtx>)config.KeyWriter) !; _keyValueTr = _tr.KeyValueDBTransaction; _keyValueTrProtector = _tr.TransactionProtector; _count = -1; }
public RelationEnumerator(IInternalObjectDBTransaction tr, RelationInfo relationInfo, ByteBuffer keyBytes, IRelationModificationCounter modificationCounter, int loaderIndex) { RelationInfo = relationInfo; Transaction = tr; ItemLoader = relationInfo.ItemLoaderInfos[loaderIndex]; _keyValueTr = Transaction.KeyValueDBTransaction; _keyValueTrProtector = Transaction.TransactionProtector; _prevProtectionCounter = _keyValueTrProtector.ProtectionCounter; KeyBytes = keyBytes; _modificationCounter = modificationCounter; _keyValueTrProtector.Start(); _keyValueTr.SetKeyPrefix(KeyBytes); _pos = 0; _seekNeeded = true; _prevModificationCounter = _modificationCounter.ModificationCounter; }
public RelationAdvancedOrderedEnumerator(IRelationDbManipulator manipulator, ByteBuffer prefixBytes, uint prefixFieldCount, EnumerationOrder order, KeyProposition startKeyProposition, ByteBuffer startKeyBytes, KeyProposition endKeyProposition, ByteBuffer endKeyBytes, bool initKeyReader, int loaderIndex) { _prefixFieldCount = prefixFieldCount; _manipulator = manipulator; ItemLoader = _manipulator.RelationInfo.ItemLoaderInfos[loaderIndex]; _tr = manipulator.Transaction; _ascending = order == EnumerationOrder.Ascending; _keyValueTr = _tr.KeyValueDBTransaction; _keyValueTrProtector = _tr.TransactionProtector; _prevProtectionCounter = _keyValueTrProtector.ProtectionCounter; _keyBytes = prefixBytes; if (endKeyProposition == KeyProposition.Included) { endKeyBytes = RelationAdvancedEnumerator <TValue> .FindLastKeyWithPrefix(_keyBytes, endKeyBytes, _keyValueTr, _keyValueTrProtector); } _keyValueTrProtector.Start(); _keyValueTr.SetKeyPrefix(_keyBytes); long startIndex; long endIndex; if (endKeyProposition == KeyProposition.Ignored) { endIndex = _keyValueTr.GetKeyValueCount() - 1; } else { switch (_keyValueTr.Find(endKeyBytes)) { case FindResult.Exact: endIndex = _keyValueTr.GetKeyIndex(); if (endKeyProposition == KeyProposition.Excluded) { endIndex--; } break; case FindResult.Previous: endIndex = _keyValueTr.GetKeyIndex(); break; case FindResult.Next: endIndex = _keyValueTr.GetKeyIndex() - 1; break; case FindResult.NotFound: endIndex = -1; break; default: throw new ArgumentOutOfRangeException(); } } if (startKeyProposition == KeyProposition.Ignored) { startIndex = 0; } else { switch (_keyValueTr.Find(startKeyBytes)) { case FindResult.Exact: startIndex = _keyValueTr.GetKeyIndex(); if (startKeyProposition == KeyProposition.Excluded) { startIndex++; } break; case FindResult.Previous: startIndex = _keyValueTr.GetKeyIndex() + 1; break; case FindResult.Next: startIndex = _keyValueTr.GetKeyIndex(); break; case FindResult.NotFound: startIndex = 0; break; default: throw new ArgumentOutOfRangeException(); } } _count = (uint)Math.Max(0, endIndex - startIndex + 1); _startPos = (uint)(_ascending ? startIndex : endIndex); _pos = 0; _seekState = SeekState.Undefined; if (initKeyReader) { var primaryKeyFields = manipulator.RelationInfo.ClientRelationVersionInfo.GetPrimaryKeyFields(); var advancedEnumParamField = primaryKeyFields[(int)_prefixFieldCount]; if (advancedEnumParamField.Handler.NeedsCtx()) { throw new BTDBException("Not supported."); } _keyReader = (Func <AbstractBufferedReader, IReaderCtx, TKey>)manipulator.RelationInfo .GetSimpleLoader(new RelationInfo.SimpleLoaderType(advancedEnumParamField.Handler, typeof(TKey))); _lengthOfNonDataPrefix = manipulator.RelationInfo.Prefix.Length; } }
internal static ByteBuffer FindLastKeyWithPrefix(ByteBuffer keyBytes, ByteBuffer endKeyBytes, IKeyValueDBTransaction keyValueTr, KeyValueDBTransactionProtector keyValueTrProtector) { var buffer = ByteBuffer.NewEmpty(); buffer = buffer.ResizingAppend(keyBytes).ResizingAppend(endKeyBytes); keyValueTrProtector.Start(); keyValueTr.SetKeyPrefix(buffer); if (!keyValueTr.FindLastKey()) { return(endKeyBytes); } var key = keyValueTr.GetKeyIncludingPrefix(); return(key.Slice(keyBytes.Length)); }
public RelationAdvancedEnumerator( IRelationDbManipulator manipulator, ByteBuffer prefixBytes, uint prefixFieldCount, EnumerationOrder order, KeyProposition startKeyProposition, ByteBuffer startKeyBytes, KeyProposition endKeyProposition, ByteBuffer endKeyBytes, int loaderIndex) { _prefixFieldCount = prefixFieldCount; _manipulator = manipulator; ItemLoader = _manipulator.RelationInfo.ItemLoaderInfos[loaderIndex]; _ascending = order == EnumerationOrder.Ascending; _tr = manipulator.Transaction; _keyValueTr = _tr.KeyValueDBTransaction; _keyValueTrProtector = _tr.TransactionProtector; _prevProtectionCounter = _keyValueTrProtector.ProtectionCounter; _keyBytes = prefixBytes; if (endKeyProposition == KeyProposition.Included) { endKeyBytes = FindLastKeyWithPrefix(_keyBytes, endKeyBytes, _keyValueTr, _keyValueTrProtector); } _keyValueTrProtector.Start(); _keyValueTr.SetKeyPrefix(_keyBytes); _prevModificationCounter = manipulator.ModificationCounter.ModificationCounter; long startIndex; long endIndex; if (endKeyProposition == KeyProposition.Ignored) { endIndex = _keyValueTr.GetKeyValueCount() - 1; } else { switch (_keyValueTr.Find(endKeyBytes)) { case FindResult.Exact: endIndex = _keyValueTr.GetKeyIndex(); if (endKeyProposition == KeyProposition.Excluded) { endIndex--; } break; case FindResult.Previous: endIndex = _keyValueTr.GetKeyIndex(); break; case FindResult.Next: endIndex = _keyValueTr.GetKeyIndex() - 1; break; case FindResult.NotFound: endIndex = -1; break; default: throw new ArgumentOutOfRangeException(); } } if (startKeyProposition == KeyProposition.Ignored) { startIndex = 0; } else { switch (_keyValueTr.Find(startKeyBytes)) { case FindResult.Exact: startIndex = _keyValueTr.GetKeyIndex(); if (startKeyProposition == KeyProposition.Excluded) { startIndex++; } break; case FindResult.Previous: startIndex = _keyValueTr.GetKeyIndex() + 1; break; case FindResult.Next: startIndex = _keyValueTr.GetKeyIndex(); break; case FindResult.NotFound: startIndex = 0; break; default: throw new ArgumentOutOfRangeException(); } } _count = (uint)Math.Max(0, endIndex - startIndex + 1); _startPos = (uint)(_ascending ? startIndex : endIndex); _pos = 0; _seekNeeded = true; _lengthOfNonDataPrefix = manipulator.RelationInfo.Prefix.Length; }
public AdvancedEnumerator(ODBSet <TKey> owner, AdvancedEnumeratorParam <TKey> param) { _owner = owner; _keyValueTrProtector = _owner._keyValueTrProtector; _keyValueTr = _owner._keyValueTr; _ascending = param.Order == EnumerationOrder.Ascending; _keyValueTrProtector.Start(); _prevModificationCounter = _owner._modificationCounter; _prevProtectionCounter = _keyValueTrProtector.ProtectionCounter; _keyValueTr.SetKeyPrefix(_owner._prefix); long startIndex; long endIndex; if (param.EndProposition == KeyProposition.Ignored) { endIndex = _keyValueTr.GetKeyValueCount() - 1; } else { var keyBytes = _owner.KeyToByteArray(param.End); switch (_keyValueTr.Find(keyBytes)) { case FindResult.Exact: endIndex = _keyValueTr.GetKeyIndex(); if (param.EndProposition == KeyProposition.Excluded) { endIndex--; } break; case FindResult.Previous: endIndex = _keyValueTr.GetKeyIndex(); break; case FindResult.Next: endIndex = _keyValueTr.GetKeyIndex() - 1; break; case FindResult.NotFound: endIndex = -1; break; default: throw new ArgumentOutOfRangeException(); } } if (param.StartProposition == KeyProposition.Ignored) { startIndex = 0; } else { var keyBytes = _owner.KeyToByteArray(param.Start); switch (_keyValueTr.Find(keyBytes)) { case FindResult.Exact: startIndex = _keyValueTr.GetKeyIndex(); if (param.StartProposition == KeyProposition.Excluded) { startIndex++; } break; case FindResult.Previous: startIndex = _keyValueTr.GetKeyIndex() + 1; break; case FindResult.Next: startIndex = _keyValueTr.GetKeyIndex(); break; case FindResult.NotFound: startIndex = 0; break; default: throw new ArgumentOutOfRangeException(); } } _count = (uint)Math.Max(0, endIndex - startIndex + 1); _startPos = (uint)(_ascending ? startIndex : endIndex); _pos = 0; _seekState = SeekState.Undefined; }
internal KeyValueDBValueProtectedWriter(IKeyValueDBTransaction transaction, KeyValueDBTransactionProtector protector) : base(transaction) { _protector = protector; }