C# IBsonSerializationOptions.GetType方法代码示例

        // public methods
        /// <summary>
        /// Deserializes an object from a BsonReader.
        /// </summary>
        /// <param name="bsonReader">The BsonReader.</param>
        /// <param name="nominalType">The nominal type of the object.</param>
        /// <param name="actualType">The actual type of the object.</param>
        /// <param name="options">The serialization options.</param>
        /// <returns>An object.</returns>
        public override object Deserialize(
            BsonReader bsonReader,
            Type nominalType,
            Type actualType,
            IBsonSerializationOptions options)
        {
            VerifyTypes(nominalType, actualType, typeof(BsonDocument));

            var bsonType = bsonReader.GetCurrentBsonType();
            string message;
            switch (bsonType)
            {
                case BsonType.Document:
                    var documentSerializationOptions = (options ?? DocumentSerializationOptions.Defaults) as DocumentSerializationOptions;
                    if (documentSerializationOptions == null)
                    {
                        message = string.Format(
                            "Serialize method of BsonDocument expected serialization options of type {0}, not {1}.",
                            BsonUtils.GetFriendlyTypeName(typeof(DocumentSerializationOptions)),
                            BsonUtils.GetFriendlyTypeName(options.GetType()));
                        throw new BsonSerializationException(message);
                    }

                    bsonReader.ReadStartDocument();
                    var document = new BsonDocument(documentSerializationOptions.AllowDuplicateNames);
                    while (bsonReader.ReadBsonType() != BsonType.EndOfDocument)
                    {
                        var name = bsonReader.ReadName();
                        var value = (BsonValue)BsonValueSerializer.Instance.Deserialize(bsonReader, typeof(BsonValue), null);
                        document.Add(name, value);
                    }
                    bsonReader.ReadEndDocument();

                    return document;
                default:
                    message = string.Format("Cannot deserialize BsonDocument from BsonType {0}.", bsonType);
                    throw new FileFormatException(message);
            }
        }

        /// <summary>
        /// Serializes an object to a BsonWriter.
        /// </summary>
        /// <param name="bsonWriter">The BsonWriter.</param>
        /// <param name="nominalType">The nominal type.</param>
        /// <param name="value">The object.</param>
        /// <param name="options">The serialization options.</param>
        public override void Serialize(
            BsonWriter bsonWriter,
            Type nominalType,
            object value,
            IBsonSerializationOptions options)
        {
            if (value == null)
            {
                throw new ArgumentNullException("value");
            }

            // could get here with a BsonDocumentWrapper from BsonValueSerializer switch statement
            var wrapper = value as BsonDocumentWrapper;
            if (wrapper != null)
            {
                BsonDocumentWrapperSerializer.Instance.Serialize(bsonWriter, nominalType, value, null);
                return;
            }

            var bsonDocument = (BsonDocument)value;
            var documentSerializationOptions = (options ?? DocumentSerializationOptions.Defaults) as DocumentSerializationOptions;
            if (documentSerializationOptions == null)
            {
                var message = string.Format(
                    "Serialize method of BsonDocument expected serialization options of type {0}, not {1}.",
                    BsonUtils.GetFriendlyTypeName(typeof(DocumentSerializationOptions)),
                    BsonUtils.GetFriendlyTypeName(options.GetType()));
                throw new BsonSerializationException(message);
            }

            bsonWriter.WriteStartDocument();
            BsonElement idElement = null;
            if (documentSerializationOptions.SerializeIdFirst && bsonDocument.TryGetElement("_id", out idElement))
            {
                bsonWriter.WriteName(idElement.Name);
                BsonValueSerializer.Instance.Serialize(bsonWriter, typeof(BsonValue), idElement.Value, null);
            }

            foreach (var element in bsonDocument)
            {
                // if serializeIdFirst is false then idElement will be null and no elements will be skipped
                if (!object.ReferenceEquals(element, idElement))
                {
                    bsonWriter.WriteName(element.Name);
                    BsonValueSerializer.Instance.Serialize(bsonWriter, typeof(BsonValue), element.Value, null);
                }
            }

            bsonWriter.WriteEndDocument();
        }

        /// <summary>
        /// Serializes an object to a BsonWriter.
        /// </summary>
        /// <param name="bsonWriter">The BsonWriter.</param>
        /// <param name="nominalType">The nominal type.</param>
        /// <param name="value">The object.</param>
        /// <param name="options">The serialization options.</param>
        public void Serialize(
            BsonWriter bsonWriter,
            Type nominalType,
            object value,
            IBsonSerializationOptions options)
        {
            if (value == null)
            {
                bsonWriter.WriteNull();
            }
            else
            {
                // Nullable types are weird because they get boxed as their underlying value type
                // we can best handle that by switching the nominalType to the underlying value type
                // (so VerifyNominalType doesn't fail and we don't get an unnecessary discriminator)
                if (nominalType.IsGenericType && nominalType.GetGenericTypeDefinition() == typeof(Nullable<>))
                {
                    nominalType = nominalType.GetGenericArguments()[0];
                }

                VerifyNominalType(nominalType);
                var actualType = (value == null) ? nominalType : value.GetType();
                if (actualType != _classMap.ClassType)
                {
                    var message = string.Format("BsonClassMapSerializer.Serialize for type {0} was called with actualType {1}.",
                        BsonUtils.GetFriendlyTypeName(_classMap.ClassType), BsonUtils.GetFriendlyTypeName(actualType));
                    throw new BsonSerializationException(message);
                }

                var documentSerializationOptions = (options ?? DocumentSerializationOptions.Defaults) as DocumentSerializationOptions;
                if (documentSerializationOptions == null)
                {
                    var message = string.Format(
                        "Serializer BsonClassMapSerializer expected serialization options of type {0}, not {1}.",
                        BsonUtils.GetFriendlyTypeName(typeof(DocumentSerializationOptions)),
                        BsonUtils.GetFriendlyTypeName(options.GetType()));
                    throw new BsonSerializationException(message);
                }

                bsonWriter.WriteStartDocument();
                BsonMemberMap idMemberMap = null;
                if (documentSerializationOptions.SerializeIdFirst)
                {
                    idMemberMap = _classMap.IdMemberMap;
                    if (idMemberMap != null)
                    {
                        SerializeMember(bsonWriter, value, idMemberMap);
                    }
                }

                if (actualType != nominalType || _classMap.DiscriminatorIsRequired || _classMap.HasRootClass)
                {
                    // never write out a discriminator for an anonymous class
                    if (!_classMap.IsAnonymous)
                    {
                        var discriminatorConvention = _classMap.GetDiscriminatorConvention();
                        var discriminator = discriminatorConvention.GetDiscriminator(nominalType, actualType);
                        if (discriminator != null)
                        {
                            bsonWriter.WriteName(discriminatorConvention.ElementName);
                            BsonValueSerializer.Instance.Serialize(bsonWriter, typeof(BsonValue), discriminator, null);
                        }
                    }
                }

                var allMemberMaps = _classMap.AllMemberMaps;
                var extraElementsMemberMapIndex = _classMap.ExtraElementsMemberMapIndex;

                for (var memberMapIndex = 0; memberMapIndex < allMemberMaps.Count; ++memberMapIndex)
                {
                    var memberMap = allMemberMaps[memberMapIndex];
                    // note: if serializeIdFirst is false then idMemberMap will be null (so no property will be skipped)
                    if (memberMap != idMemberMap)
                    {
                        if (memberMapIndex != extraElementsMemberMapIndex)
                        {
                            SerializeMember(bsonWriter, value, memberMap);
                        }
                        else
                        {
                            SerializeExtraElements(bsonWriter, value, memberMap);
                        }
                    }
                }
                bsonWriter.WriteEndDocument();
            }
        }