/// <summary> /// 将一个智能对象转换为二进制元数据 /// </summary> /// <param name="obj">智能对象</param> /// <returns>返回二进制元数据</returns> /// <exception cref="PropertyNullValueException">字段相关的Attribute.IsRequire = true, 并且该字段的值为null</exception> /// <exception cref="UnexpectedValueException">不期待的结果异常,通常因为对Blob类型的取值 = null</exception> /// <exception cref="NotSupportedException">系统不支持的序列化类型</exception> /// <exception cref="DefineNoMeaningException">无意义的智能字段Attribute值</exception> /// <exception cref="MethodAccessException">类型权限定义错误</exception> /// <exception cref="Exception">内部错误</exception> public static byte[] ToBytes(IThriftObject obj) { if (obj == null) { return(null); } IMemorySegmentProxy proxy = null; try { proxy = MemorySegmentProxyFactory.Create(); ToBytes(obj, proxy); //end flag of Thrift protocol object. proxy.WriteSByte(0x00); return(proxy.GetBytes()); } catch (Exception ex) { if (proxy != null) { proxy.Dispose(); } throw; } }
/// <summary> /// 将一个智能对象转换为二进制元数据 /// </summary> /// <param name="obj">智能对象</param> /// <param name="proxy">内存段代理器</param> /// <returns>返回当前已经被序列化对象的总体长度</returns> internal static void ToBytes(IThriftObject obj, IMemorySegmentProxy proxy) { //获取智能对象中的智能属性,并按照Id来排序 ToBytesAnalyseResult[] properties = Analyser.ToBytesAnalyser.Analyse(obj); if (properties.Length == 0) { return; } for (int l = 0; l < properties.Length; l++) { ToBytesAnalyseResult property = properties[l]; //先检查完全缓存机制 if (property.HasCacheFinished) { property.CacheProcess(proxy, property.Attribute, property, obj, false, false); continue; } #region 普通类型判断 IThriftTypeProcessor intellectTypeProcessor = ThriftTypeProcessorMapping.Instance.GetProcessor(property.Property.PropertyType); if (intellectTypeProcessor != null) { //添加热缓存 IThriftTypeProcessor processor = intellectTypeProcessor; property.CacheProcess = processor.Process; property.CacheProcess(proxy, property.Attribute, property, obj, false, false); property.HasCacheFinished = true; continue; } #endregion #region 枚举类型判断 //枚举类型 if (property.Property.PropertyType.IsEnum) { //获取枚举类型 Type enumType = Enum.GetUnderlyingType(property.Property.PropertyType); intellectTypeProcessor = ThriftTypeProcessorMapping.Instance.GetProcessor(enumType); if (intellectTypeProcessor == null) { throw new NotSupportedException(string.Format(ExceptionMessage.EX_NOT_SUPPORTED_VALUE, property.Attribute.Id, property.Property.Name, property.Property.PropertyType)); } //添加热缓存 IThriftTypeProcessor processor = intellectTypeProcessor; property.CacheProcess = processor.Process; property.CacheProcess(proxy, property.Attribute, property, obj, false, false); property.HasCacheFinished = true; continue; } #endregion #region 可空类型判断 Type innerType; if ((innerType = Nullable.GetUnderlyingType(property.Property.PropertyType)) != null) { intellectTypeProcessor = ThriftTypeProcessorMapping.Instance.GetProcessor(innerType); if (intellectTypeProcessor != null) { //添加热缓存 IThriftTypeProcessor processor = intellectTypeProcessor; property.CacheProcess = delegate(IMemorySegmentProxy innerProxy, ThriftPropertyAttribute innerAttribute, ToBytesAnalyseResult innerAnalyseResult, object innerTarget, bool innerIsArrayElement, bool innerNullable) { processor.Process(innerProxy, innerAttribute, innerAnalyseResult, innerTarget, innerIsArrayElement, true); }; property.CacheProcess(proxy, property.Attribute, property, obj, false, true); property.HasCacheFinished = true; continue; } throw new NotSupportedException(string.Format(ExceptionMessage.EX_NOT_SUPPORTED_VALUE, property.Attribute.Id, property.Property.Name, property.Property.PropertyType)); } #endregion #region Thrift Object类型判断 if (property.Property.PropertyType.GetInterface(Consts.ThriftObjectFullName) != null) { //添加热缓存 property.CacheProcess = delegate(IMemorySegmentProxy innerProxy, ThriftPropertyAttribute innerAttribute, ToBytesAnalyseResult innerAnalyseResult, object innerTarget, bool innerIsArrayElement, bool innerNullable) { IThriftObject innerIntellectObj = innerAnalyseResult.GetValue <IThriftObject>(innerTarget); if (innerIntellectObj == null) { return; } innerProxy.WriteByte((byte)innerAttribute.Id); MemoryPosition startPos = innerProxy.GetPosition(); innerProxy.Skip(4); ToBytes(innerIntellectObj, innerProxy); MemoryPosition endPos = innerProxy.GetPosition(); innerProxy.WriteBackInt32(startPos, MemoryPosition.CalcLength(innerProxy.SegmentCount, startPos, endPos) - 4); }; property.CacheProcess(proxy, property.Attribute, property, obj, false, false); property.HasCacheFinished = true; continue; } #endregion #region 数组的判断 if (property.Property.PropertyType.IsArray) { if (!property.Property.PropertyType.HasElementType) { throw new NotSupportedException(string.Format(ExceptionMessage.EX_NOT_SUPPORTED_VALUE, property.Attribute.Id, property.Property.Name, property.Property.PropertyType)); } Type elementType = property.Property.PropertyType.GetElementType(); VT vt = FixedTypeManager.IsVT(elementType); //special optimize. IThriftTypeProcessor arrayProcessor = ArrayTypeProcessorMapping.Instance.GetProcessor(property.Property.PropertyType); if (arrayProcessor != null) { property.CacheProcess = arrayProcessor.Process; } //is VT, but cannot find special processor. else if (vt != null) { throw new NotSupportedException(string.Format(ExceptionMessage.EX_NOT_SUPPORTED_VALUE, property.Attribute.Id, property.Property.Name, property.Property.PropertyType)); } else if (elementType.IsSubclassOf(typeof(ThriftObject))) { //Add hot cache. property.CacheProcess = delegate(IMemorySegmentProxy innerProxy, ThriftPropertyAttribute innerAttribute, ToBytesAnalyseResult innerAnalyseResult, object innerTarget, bool innerIsArrayElement, bool innerNullable) { IThriftObject[] array = innerAnalyseResult.GetValue <IThriftObject[]>(innerTarget); if (array == null) { if (innerAttribute.Optional) { return; } throw new PropertyNullValueException(string.Format(ExceptionMessage.EX_PROPERTY_VALUE, innerAttribute.Id, innerAnalyseResult.Property.Name, innerAnalyseResult.Property.PropertyType)); } //property type innerProxy.WriteSByte((sbyte)innerAttribute.PropertyType); innerProxy.WriteInt16(((short)innerAttribute.Id).ToBigEndian()); //element type(1) + array length(4) innerProxy.WriteSByte((sbyte)PropertyTypes.Struct); innerProxy.WriteInt32(array.Length.ToBigEndian()); for (int i = 0; i < array.Length; i++) { IThriftObject element = array[i]; ToBytes(element, innerProxy); //end flag of Thrift protocol object. innerProxy.WriteSByte(0x00); } }; } else { intellectTypeProcessor = ThriftTypeProcessorMapping.Instance.GetProcessor(elementType); if (intellectTypeProcessor == null) { throw new NotSupportedException(string.Format(ExceptionMessage.EX_NOT_SUPPORTED_VALUE, property.Attribute.Id, property.Property.Name, elementType)); } //Add hot cache. IThriftTypeProcessor processor = intellectTypeProcessor; property.CacheProcess = delegate(IMemorySegmentProxy innerProxy, ThriftPropertyAttribute innerAttribute, ToBytesAnalyseResult innerAnalyseResult, object innerTarget, bool innerIsArrayElement, bool innerNullable) { Array array = innerAnalyseResult.GetValue <Array>(innerTarget); if (array == null) { if (innerAttribute.Optional) { return; } throw new PropertyNullValueException(string.Format(ExceptionMessage.EX_PROPERTY_VALUE, innerAttribute.Id, innerAnalyseResult.Property.Name, innerAnalyseResult.Property.PropertyType)); } //id(1) + total length(4) + rank(4) innerProxy.WriteByte((byte)innerAttribute.Id); MemoryPosition startPosition = innerProxy.GetPosition(); innerProxy.Skip(4); innerProxy.WriteInt32(array.Length); for (int i = 0; i < array.Length; i++) { object element = array.GetValue(i); if (element == null) { innerProxy.WriteUInt16(0); } else { MemoryPosition innerStartObjPosition = innerProxy.GetPosition(); innerProxy.Skip(Size.UInt16); processor.Process(innerProxy, innerAttribute, innerAnalyseResult, element, true); MemoryPosition innerEndObjPosition = innerProxy.GetPosition(); innerProxy.WriteBackUInt16(innerStartObjPosition, (ushort)(MemoryPosition.CalcLength(innerProxy.SegmentCount, innerStartObjPosition, innerEndObjPosition) - 2)); } } MemoryPosition endPosition = innerProxy.GetPosition(); innerProxy.WriteBackInt32(startPosition, MemoryPosition.CalcLength(innerProxy.SegmentCount, startPosition, endPosition) - 4); }; } property.CacheProcess(proxy, property.Attribute, property, obj, false, false); property.HasCacheFinished = true; continue; } #endregion throw new NotSupportedException(string.Format(ExceptionMessage.EX_NOT_SUPPORTED_VALUE, property.Attribute.Id, property.Property.Name, property.Property.PropertyType)); } }