/// <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)
{
bsonWriter.WriteNull();
}
else
{
if (nominalType == typeof(object))
{
var actualType = value.GetType();
bsonWriter.WriteStartDocument();
bsonWriter.WriteString("_t", TypeNameDiscriminator.GetDiscriminator(actualType));
bsonWriter.WriteName("_v");
Serialize(bsonWriter, actualType, value, options); // recursive call replacing nominalType with actualType
bsonWriter.WriteEndDocument();
return;
}
var dictionary = (IDictionary)value;
var dictionarySerializationOptions = EnsureSerializationOptions(options);
var dictionaryRepresentation = dictionarySerializationOptions.Representation;
var keyValuePairSerializationOptions = dictionarySerializationOptions.KeyValuePairSerializationOptions;
if (dictionaryRepresentation == DictionaryRepresentation.Dynamic)
{
dictionaryRepresentation = DictionaryRepresentation.Document;
foreach (object key in dictionary.Keys)
{
var name = key as string; // check for null and type string at the same time
if (name == null || name[0] == '$' || name.IndexOf('.') != -1)
{
dictionaryRepresentation = DictionaryRepresentation.ArrayOfArrays;
break;
}
}
}
switch (dictionaryRepresentation)
{
case DictionaryRepresentation.Document:
bsonWriter.WriteStartDocument();
foreach (DictionaryEntry dictionaryEntry in dictionary)
{
bsonWriter.WriteName((string)dictionaryEntry.Key);
BsonSerializer.Serialize(bsonWriter, typeof(object), dictionaryEntry.Value, keyValuePairSerializationOptions.ValueSerializationOptions);
}
bsonWriter.WriteEndDocument();
break;
case DictionaryRepresentation.ArrayOfArrays:
case DictionaryRepresentation.ArrayOfDocuments:
// override KeyValuePair representation if necessary
var keyValuePairRepresentation = (dictionaryRepresentation == DictionaryRepresentation.ArrayOfArrays) ? BsonType.Array : BsonType.Document;
if (keyValuePairSerializationOptions.Representation != keyValuePairRepresentation)
{
keyValuePairSerializationOptions = new KeyValuePairSerializationOptions(
keyValuePairRepresentation,
keyValuePairSerializationOptions.KeySerializationOptions,
keyValuePairSerializationOptions.ValueSerializationOptions);
}
bsonWriter.WriteStartArray();
foreach (DictionaryEntry dictionaryEntry in dictionary)
{
var keyValuePair = new KeyValuePair<object, object>(dictionaryEntry.Key, dictionaryEntry.Value);
_keyValuePairSerializer.Serialize(
bsonWriter,
typeof(KeyValuePair<object, object>),
keyValuePair,
keyValuePairSerializationOptions);
}
bsonWriter.WriteEndArray();
break;
default:
var message = string.Format("'{0}' is not a valid IDictionary representation.", dictionaryRepresentation);
throw new BsonSerializationException(message);
}
}
}
private void SerializeExtraElements(BsonWriter bsonWriter, object obj, BsonMemberMap extraElementsMemberMap)
{
var extraElements = extraElementsMemberMap.Getter(obj);
if (extraElements != null)
{
if (extraElementsMemberMap.MemberType == typeof(BsonDocument))
{
var bsonDocument = (BsonDocument)extraElements;
foreach (var element in bsonDocument)
{
bsonWriter.WriteName(element.Name);
BsonValueSerializer.Instance.Serialize(bsonWriter, typeof(BsonValue), element.Value, null);
}
}
else
{
var dictionary = (IDictionary<string, object>)extraElements;
foreach (var key in dictionary.Keys)
{
bsonWriter.WriteName(key);
var value = dictionary[key];
if (value == null)
{
bsonWriter.WriteNull();
}
else
{
var bsonValue = BsonTypeMapper.MapToBsonValue(dictionary[key]);
BsonValueSerializer.Instance.Serialize(bsonWriter, typeof(BsonValue), bsonValue, null);
}
}
}
}
}
private void SerializeMember(BsonWriter bsonWriter, object obj, BsonMemberMap memberMap)
{
var value = memberMap.Getter(obj);
if (!memberMap.ShouldSerialize(obj, value))
{
return; // don't serialize member
}
bsonWriter.WriteName(memberMap.ElementName);
var nominalType = memberMap.MemberType;
if (value == null && nominalType.IsInterface)
{
bsonWriter.WriteNull();
}
else
{
var actualType = (value == null) ? nominalType : value.GetType();
var serializer = memberMap.GetSerializer(actualType);
serializer.Serialize(bsonWriter, nominalType, value, memberMap.SerializationOptions);
}
}
/// <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();
}
}
/// <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 rawBsonDocument = value as RawBsonDocument;
if (rawBsonDocument != null)
{
RawBsonDocumentSerializer.Instance.Serialize(bsonWriter, nominalType, value, options);
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 override void Serialize(
BsonWriter bsonWriter,
Type nominalType,
object value,
IBsonSerializationOptions options)
{
if (value == null)
{
bsonWriter.WriteNull();
}
else
{
var actualType = value.GetType();
var discriminator = GetDiscriminator(nominalType, actualType);
if (discriminator != null)
{
bsonWriter.WriteStartDocument();
bsonWriter.WriteString("_t", discriminator);
bsonWriter.WriteName("_v");
Serialize(bsonWriter, actualType, value, options);
bsonWriter.WriteEndDocument();
return;
}
var arraySerializationOptions = EnsureSerializationOptions<ArraySerializationOptions>(options);
var itemSerializationOptions = arraySerializationOptions.ItemSerializationOptions;
Type lastItemType = null;
IBsonSerializer lastItemSerializer = null;
bsonWriter.WriteStartArray();
foreach (var item in EnumerateItemsInSerializationOrder(value))
{
var itemType = (item == null) ? typeof(object) : item.GetType();
IBsonSerializer itemSerializer;
if (itemType == lastItemType)
{
itemSerializer = lastItemSerializer;
}
else
{
itemSerializer = BsonSerializer.LookupSerializer(itemType);
lastItemType = itemType;
lastItemSerializer = itemSerializer;
}
itemSerializer.Serialize(bsonWriter, typeof(object), item, itemSerializationOptions);
}
bsonWriter.WriteEndArray();
}
}
/// <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)
{
bsonWriter.WriteNull();
}
else
{
if (nominalType == typeof(object))
{
var actualType = value.GetType();
bsonWriter.WriteStartDocument();
bsonWriter.WriteString("_t", TypeNameDiscriminator.GetDiscriminator(actualType));
bsonWriter.WriteName("_v");
Serialize(bsonWriter, actualType, value, options);
bsonWriter.WriteEndDocument();
return;
}
var items = ((Stack)value).ToArray(); // convert to array to allow efficient access in reverse order
var arraySerializationOptions = EnsureSerializationOptions<ArraySerializationOptions>(options);
var itemSerializationOptions = arraySerializationOptions.ItemSerializationOptions;
// serialize first pushed item first (reverse of enumeration order)
bsonWriter.WriteStartArray();
for (var i = items.Length - 1; i >= 0; i--)
{
BsonSerializer.Serialize(bsonWriter, typeof(object), items[i], itemSerializationOptions);
}
bsonWriter.WriteEndArray();
}
}
/// <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)
{
bsonWriter.WriteNull();
}
else
{
if (nominalType == typeof(object))
{
var actualType = value.GetType();
bsonWriter.WriteStartDocument();
bsonWriter.WriteString("_t", TypeNameDiscriminator.GetDiscriminator(actualType));
bsonWriter.WriteName("_v");
Serialize(bsonWriter, actualType, value, options);
bsonWriter.WriteEndDocument();
return;
}
var items = (Queue)value;
var arraySerializationOptions = EnsureSerializationOptions<ArraySerializationOptions>(options);
var itemSerializationOptions = arraySerializationOptions.ItemSerializationOptions;
bsonWriter.WriteStartArray();
foreach (var item in items)
{
BsonSerializer.Serialize(bsonWriter, typeof(object), item, itemSerializationOptions);
}
bsonWriter.WriteEndArray();
}
}
