public Type GetActualType(
BsonReader bsonReader,
Type nominalType
)
{
var bookmark = bsonReader.GetBookmark();
bsonReader.ReadStartDocument();
var actualType = nominalType;
while (bsonReader.ReadBsonType() != BsonType.EndOfDocument)
{
var name = bsonReader.ReadName();
if (name == "OnlyInB")
{
actualType = typeof(B);
break;
}
else if (name == "OnlyInC")
{
actualType = typeof(C);
break;
}
bsonReader.SkipValue();
}
bsonReader.ReturnToBookmark(bookmark);
return(actualType);
}
/// <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 object Deserialize(
BsonReader bsonReader,
Type nominalType,
Type actualType,
IBsonSerializationOptions options
)
{
VerifyNominalType(nominalType);
if (bsonReader.CurrentBsonType == Bson.BsonType.Null)
{
bsonReader.ReadNull();
return(null);
}
else
{
if (actualType.IsValueType)
{
var message = string.Format("Value class {0} cannot be deserialized.", actualType.FullName);
throw new BsonSerializationException(message);
}
var classMap = BsonClassMap.LookupClassMap(actualType);
if (classMap.IsAnonymous)
{
throw new InvalidOperationException("An anonymous class cannot be deserialized.");
}
var obj = classMap.CreateInstance();
bsonReader.ReadStartDocument();
var missingElementMemberMaps = new HashSet <BsonMemberMap>(classMap.MemberMaps); // make a copy!
var discriminatorConvention = BsonDefaultSerializer.LookupDiscriminatorConvention(nominalType);
while (bsonReader.ReadBsonType() != BsonType.EndOfDocument)
{
var elementName = bsonReader.ReadName();
if (elementName == discriminatorConvention.ElementName)
{
bsonReader.SkipValue(); // skip over discriminator
continue;
}
var memberMap = classMap.GetMemberMapForElement(elementName);
if (memberMap != null && memberMap != classMap.ExtraElementsMemberMap)
{
DeserializeMember(bsonReader, obj, memberMap);
missingElementMemberMaps.Remove(memberMap);
}
else
{
if (classMap.ExtraElementsMemberMap != null)
{
DeserializeExtraElement(bsonReader, obj, elementName, classMap.ExtraElementsMemberMap);
}
else if (classMap.IgnoreExtraElements)
{
bsonReader.SkipValue();
}
else
{
var message = string.Format("Element '{0}' does not match any field or property of class {1}.", elementName, classMap.ClassType.FullName);
throw new FileFormatException(message);
}
}
}
bsonReader.ReadEndDocument();
foreach (var memberMap in missingElementMemberMaps)
{
if (memberMap.IsRequired)
{
var fieldOrProperty = (memberMap.MemberInfo.MemberType == MemberTypes.Field) ? "field" : "property";
var message = string.Format("Required element '{0}' for {1} '{2}' of class {3} is missing.", memberMap.ElementName, fieldOrProperty, memberMap.MemberName, classMap.ClassType.FullName);
throw new FileFormatException(message);
}
if (memberMap.HasDefaultValue)
{
memberMap.ApplyDefaultValue(obj);
}
}
return(obj);
}
}
/// <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 object Deserialize(
BsonReader bsonReader,
Type nominalType,
Type actualType,
IBsonSerializationOptions options
)
{
VerifyNominalType(nominalType);
if (bsonReader.CurrentBsonType == Bson.BsonType.Null)
{
bsonReader.ReadNull();
return(null);
}
else
{
var classMap = BsonClassMap.LookupClassMap(actualType);
if (classMap.IsAnonymous)
{
throw new InvalidOperationException("Anonymous classes cannot be deserialized");
}
var obj = classMap.CreateInstance();
bsonReader.ReadStartDocument();
var missingElementMemberMaps = new HashSet <BsonMemberMap>(classMap.MemberMaps); // make a copy!
var discriminatorConvention = BsonDefaultSerializer.LookupDiscriminatorConvention(nominalType);
while (bsonReader.ReadBsonType() != BsonType.EndOfDocument)
{
var elementName = bsonReader.ReadName();
if (elementName == discriminatorConvention.ElementName)
{
bsonReader.SkipValue(); // skip over discriminator
continue;
}
var memberMap = classMap.GetMemberMapForElement(elementName);
if (memberMap != null && memberMap != classMap.ExtraElementsMemberMap)
{
DeserializeMember(bsonReader, obj, memberMap);
missingElementMemberMaps.Remove(memberMap);
}
else
{
if (classMap.ExtraElementsMemberMap != null)
{
DeserializeExtraElement(bsonReader, obj, elementName, classMap.ExtraElementsMemberMap);
}
else if (classMap.IgnoreExtraElements)
{
bsonReader.SkipValue();
}
else
{
string message = string.Format("Unexpected element: {0}", elementName);
throw new FileFormatException(message);
}
}
}
bsonReader.ReadEndDocument();
foreach (var memberMap in missingElementMemberMaps)
{
if (memberMap.IsRequired)
{
var message = string.Format("Required element is missing: {0}", memberMap.ElementName);
throw new FileFormatException(message);
}
if (memberMap.HasDefaultValue)
{
memberMap.ApplyDefaultValue(obj);
}
}
return(obj);
}
}
/// <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 object Deserialize(
BsonReader bsonReader,
Type nominalType,
Type actualType,
IBsonSerializationOptions options)
{
VerifyNominalType(nominalType);
var bsonType = bsonReader.GetCurrentBsonType();
if (bsonType == Bson.BsonType.Null)
{
bsonReader.ReadNull();
return(null);
}
else
{
if (actualType != _classMap.ClassType)
{
var message = string.Format("BsonClassMapSerializer.Deserialize for type {0} was called with actualType {1}.",
BsonUtils.GetFriendlyTypeName(_classMap.ClassType), BsonUtils.GetFriendlyTypeName(actualType));
throw new BsonSerializationException(message);
}
if (actualType.IsValueType)
{
var message = string.Format("Value class {0} cannot be deserialized.", actualType.FullName);
throw new BsonSerializationException(message);
}
if (_classMap.IsAnonymous)
{
throw new InvalidOperationException("An anonymous class cannot be deserialized.");
}
if (bsonType != BsonType.Document)
{
var message = string.Format(
"Expected a nested document representing the serialized form of a {0} value, but found a value of type {1} instead.",
actualType.FullName, bsonType);
throw new FileFormatException(message);
}
Dictionary <string, object> values = null;
object obj = null;
ISupportInitialize supportsInitialization = null;
if (_classMap.HasCreatorMaps)
{
// for creator-based deserialization we first gather the values in a dictionary and then call a matching creator
values = new Dictionary <string, object>();
}
else
{
// for mutable classes we deserialize the values directly into the result object
obj = _classMap.CreateInstance();
supportsInitialization = obj as ISupportInitialize;
if (supportsInitialization != null)
{
supportsInitialization.BeginInit();
}
}
var discriminatorConvention = _classMap.GetDiscriminatorConvention();
var allMemberMaps = _classMap.AllMemberMaps;
var extraElementsMemberMapIndex = _classMap.ExtraElementsMemberMapIndex;
var memberMapBitArray = FastMemberMapHelper.GetBitArray(allMemberMaps.Count);
bsonReader.ReadStartDocument();
var elementTrie = _classMap.ElementTrie;
bool memberMapFound;
int memberMapIndex;
while (bsonReader.ReadBsonType(elementTrie, out memberMapFound, out memberMapIndex) != BsonType.EndOfDocument)
{
var elementName = bsonReader.ReadName();
if (memberMapFound)
{
var memberMap = allMemberMaps[memberMapIndex];
if (memberMapIndex != extraElementsMemberMapIndex)
{
if (obj != null)
{
if (memberMap.IsReadOnly)
{
bsonReader.SkipValue();
}
else
{
var value = DeserializeMemberValue(bsonReader, memberMap);
memberMap.Setter(obj, value);
}
}
else
{
var value = DeserializeMemberValue(bsonReader, memberMap);
values[elementName] = value;
}
}
else
{
DeserializeExtraElement(bsonReader, obj, elementName, memberMap);
}
memberMapBitArray[memberMapIndex >> 5] |= 1U << (memberMapIndex & 31);
}
else
{
if (elementName == discriminatorConvention.ElementName)
{
bsonReader.SkipValue(); // skip over discriminator
continue;
}
if (extraElementsMemberMapIndex >= 0)
{
DeserializeExtraElement(bsonReader, obj, elementName, _classMap.ExtraElementsMemberMap);
memberMapBitArray[extraElementsMemberMapIndex >> 5] |= 1U << (extraElementsMemberMapIndex & 31);
}
else if (_classMap.IgnoreExtraElements)
{
bsonReader.SkipValue();
}
else
{
var message = string.Format(
"Element '{0}' does not match any field or property of class {1}.",
elementName, _classMap.ClassType.FullName);
throw new FileFormatException(message);
}
}
}
bsonReader.ReadEndDocument();
// check any members left over that we didn't have elements for (in blocks of 32 elements at a time)
for (var bitArrayIndex = 0; bitArrayIndex < memberMapBitArray.Length; ++bitArrayIndex)
{
memberMapIndex = bitArrayIndex << 5;
var memberMapBlock = ~memberMapBitArray[bitArrayIndex]; // notice that bits are flipped so 1's are now the missing elements
// work through this memberMapBlock of 32 elements
while (true)
{
// examine missing elements (memberMapBlock is shifted right as we work through the block)
for (; (memberMapBlock & 1) != 0; ++memberMapIndex, memberMapBlock >>= 1)
{
var memberMap = allMemberMaps[memberMapIndex];
if (memberMap.IsReadOnly)
{
continue;
}
if (memberMap.IsRequired)
{
var fieldOrProperty = (memberMap.MemberInfo.MemberType == MemberTypes.Field) ? "field" : "property";
var message = string.Format(
"Required element '{0}' for {1} '{2}' of class {3} is missing.",
memberMap.ElementName, fieldOrProperty, memberMap.MemberName, _classMap.ClassType.FullName);
throw new FileFormatException(message);
}
if (obj != null)
{
memberMap.ApplyDefaultValue(obj);
}
else if (memberMap.IsDefaultValueSpecified && !memberMap.IsReadOnly)
{
values[memberMap.ElementName] = memberMap.DefaultValue;
}
}
if (memberMapBlock == 0)
{
break;
}
// skip ahead to the next missing element
var leastSignificantBit = FastMemberMapHelper.GetLeastSignificantBit(memberMapBlock);
memberMapIndex += leastSignificantBit;
memberMapBlock >>= leastSignificantBit;
}
}
if (obj != null)
{
if (supportsInitialization != null)
{
supportsInitialization.EndInit();
}
return(obj);
}
else
{
return(CreateInstanceUsingCreator(values));
}
}
}
/// <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 object Deserialize(
BsonReader bsonReader,
Type nominalType,
Type actualType,
IBsonSerializationOptions options)
{
VerifyNominalType(nominalType);
var bsonType = bsonReader.GetCurrentBsonType();
if (bsonType == Bson.BsonType.Null)
{
bsonReader.ReadNull();
return(null);
}
else
{
if (actualType != _classMap.ClassType)
{
var message = string.Format("BsonClassMapSerializer.Deserialize for type {0} was called with actualType {1}.",
BsonUtils.GetFriendlyTypeName(_classMap.ClassType), BsonUtils.GetFriendlyTypeName(actualType));
throw new BsonSerializationException(message);
}
if (actualType.IsValueType)
{
var message = string.Format("Value class {0} cannot be deserialized.", actualType.FullName);
throw new BsonSerializationException(message);
}
if (_classMap.IsAnonymous)
{
throw new InvalidOperationException("An anonymous class cannot be deserialized.");
}
var obj = _classMap.CreateInstance();
if (bsonType != BsonType.Document)
{
var message = string.Format(
"Expected a nested document representing the serialized form of a {0} value, but found a value of type {1} instead.",
actualType.FullName, bsonType);
throw new FileFormatException(message);
}
var supportsInitialization = obj as ISupportInitialize;
if (supportsInitialization != null)
{
supportsInitialization.BeginInit();
}
var discriminatorConvention = _classMap.GetDiscriminatorConvention();
var fastMemberMapFinder = new FastMemberMapFinder(_classMap);
bsonReader.ReadStartDocument();
while (bsonReader.ReadBsonType() != BsonType.EndOfDocument)
{
var elementName = bsonReader.ReadName();
if (elementName == discriminatorConvention.ElementName)
{
bsonReader.SkipValue(); // skip over discriminator
continue;
}
var memberMap = fastMemberMapFinder.GetMemberMapForElement(elementName);
if (memberMap != null)
{
if (memberMap.IsReadOnly)
{
bsonReader.SkipValue();
}
else
{
DeserializeMember(bsonReader, obj, memberMap);
}
}
else
{
if (_classMap.ExtraElementsMemberMap != null)
{
DeserializeExtraElement(bsonReader, obj, elementName, _classMap.ExtraElementsMemberMap);
}
else if (_classMap.IgnoreExtraElements)
{
bsonReader.SkipValue();
}
else
{
var message = string.Format(
"Element '{0}' does not match any field or property of class {1}.",
elementName, _classMap.ClassType.FullName);
throw new FileFormatException(message);
}
}
}
bsonReader.ReadEndDocument();
// check any members left over that we didn't have elements for
if (fastMemberMapFinder.HasLeftOverMemberMaps())
{
foreach (var memberMap in fastMemberMapFinder.GetLeftOverMemberMaps())
{
if (memberMap.IsReadOnly)
{
continue;
}
if (memberMap.IsRequired)
{
var fieldOrProperty = (memberMap.MemberInfo.MemberType == MemberTypes.Field) ? "field" : "property";
var message = string.Format(
"Required element '{0}' for {1} '{2}' of class {3} is missing.",
memberMap.ElementName, fieldOrProperty, memberMap.MemberName, _classMap.ClassType.FullName);
throw new FileFormatException(message);
}
memberMap.ApplyDefaultValue(obj);
}
}
if (supportsInitialization != null)
{
supportsInitialization.EndInit();
}
return(obj);
}
}
/// <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 object Deserialize(
BsonReader bsonReader,
Type nominalType,
Type actualType,
IBsonSerializationOptions options)
{
VerifyNominalType(nominalType);
var bsonType = bsonReader.GetCurrentBsonType();
if (bsonType == Bson.BsonType.Null)
{
bsonReader.ReadNull();
return null;
}
else
{
if (actualType != _classMap.ClassType)
{
var message = string.Format("BsonClassMapSerializer.Deserialize for type {0} was called with actualType {1}.",
BsonUtils.GetFriendlyTypeName(_classMap.ClassType), BsonUtils.GetFriendlyTypeName(actualType));
throw new BsonSerializationException(message);
}
if (actualType.IsValueType)
{
var message = string.Format("Value class {0} cannot be deserialized.", actualType.FullName);
throw new BsonSerializationException(message);
}
if (_classMap.IsAnonymous)
{
throw new InvalidOperationException("An anonymous class cannot be deserialized.");
}
if (bsonType != BsonType.Document)
{
var message = string.Format(
"Expected a nested document representing the serialized form of a {0} value, but found a value of type {1} instead.",
actualType.FullName, bsonType);
throw new FileFormatException(message);
}
Dictionary<string, object> values = null;
object obj = null;
ISupportInitialize supportsInitialization = null;
if (_classMap.HasCreatorMaps)
{
// for creator-based deserialization we first gather the values in a dictionary and then call a matching creator
values = new Dictionary<string, object>();
}
else
{
// for mutable classes we deserialize the values directly into the result object
obj = _classMap.CreateInstance();
supportsInitialization = obj as ISupportInitialize;
if (supportsInitialization != null)
{
supportsInitialization.BeginInit();
}
}
var discriminatorConvention = _classMap.GetDiscriminatorConvention();
var allMemberMaps = _classMap.AllMemberMaps;
var extraElementsMemberMapIndex = _classMap.ExtraElementsMemberMapIndex;
var memberMapBitArray = FastMemberMapHelper.GetBitArray(allMemberMaps.Count);
bsonReader.ReadStartDocument();
var elementTrie = _classMap.ElementTrie;
bool memberMapFound;
int memberMapIndex;
while (bsonReader.ReadBsonType(elementTrie, out memberMapFound, out memberMapIndex) != BsonType.EndOfDocument)
{
var elementName = bsonReader.ReadName();
if (memberMapFound)
{
var memberMap = allMemberMaps[memberMapIndex];
if (memberMapIndex != extraElementsMemberMapIndex)
{
if (obj != null)
{
if (memberMap.IsReadOnly)
{
bsonReader.SkipValue();
}
else
{
var value = DeserializeMemberValue(bsonReader, memberMap);
memberMap.Setter(obj, value);
}
}
else
{
var value = DeserializeMemberValue(bsonReader, memberMap);
values[elementName] = value;
}
}
else
{
DeserializeExtraElement(bsonReader, obj, elementName, memberMap);
}
memberMapBitArray[memberMapIndex >> 5] |= 1U << (memberMapIndex & 31);
}
else
{
if (elementName == discriminatorConvention.ElementName)
{
bsonReader.SkipValue(); // skip over discriminator
continue;
}
if (extraElementsMemberMapIndex >= 0)
{
DeserializeExtraElement(bsonReader, obj, elementName, _classMap.ExtraElementsMemberMap);
memberMapBitArray[extraElementsMemberMapIndex >> 5] |= 1U << (extraElementsMemberMapIndex & 31);
}
else if (_classMap.IgnoreExtraElements)
{
bsonReader.SkipValue();
}
else
{
//james.wei 针对/_id属性没有扩展映射的提示。
var message = string.Format("Element '{0}' does not match any field or property of class {1}.",elementName, _classMap.ClassType.FullName);
throw new FileFormatException(message);
}
}
}
bsonReader.ReadEndDocument();
// check any members left over that we didn't have elements for (in blocks of 32 elements at a time)
for (var bitArrayIndex = 0; bitArrayIndex < memberMapBitArray.Length; ++bitArrayIndex)
{
memberMapIndex = bitArrayIndex << 5;
var memberMapBlock = ~memberMapBitArray[bitArrayIndex]; // notice that bits are flipped so 1's are now the missing elements
// work through this memberMapBlock of 32 elements
while (true)
{
// examine missing elements (memberMapBlock is shifted right as we work through the block)
for (; (memberMapBlock & 1) != 0; ++memberMapIndex, memberMapBlock >>= 1)
{
var memberMap = allMemberMaps[memberMapIndex];
if (memberMap.IsReadOnly)
{
continue;
}
if (memberMap.IsRequired)
{
var fieldOrProperty = (memberMap.MemberInfo.MemberType == MemberTypes.Field) ? "field" : "property";
var message = string.Format(
"Required element '{0}' for {1} '{2}' of class {3} is missing.",
memberMap.ElementName, fieldOrProperty, memberMap.MemberName, _classMap.ClassType.FullName);
throw new FileFormatException(message);
}
if (obj != null)
{
memberMap.ApplyDefaultValue(obj);
}
else if (memberMap.IsDefaultValueSpecified && !memberMap.IsReadOnly)
{
values[memberMap.ElementName] = memberMap.DefaultValue;
}
}
if (memberMapBlock == 0)
{
break;
}
// skip ahead to the next missing element
var leastSignificantBit = FastMemberMapHelper.GetLeastSignificantBit(memberMapBlock);
memberMapIndex += leastSignificantBit;
memberMapBlock >>= leastSignificantBit;
}
}
if (obj != null)
{
if (supportsInitialization != null)
{
supportsInitialization.EndInit();
}
return obj;
}
else
{
return CreateInstanceUsingCreator(values);
}
}
}
public object Deserialize(BsonReader bsonReader, Type nominalType, Type actualType, IBsonSerializationOptions options)
{
this.VerifyNominalType(nominalType);
if (bsonReader.CurrentBsonType == BsonType.Null)
{
bsonReader.ReadNull();
return((object)null);
}
else
{
if (actualType.IsValueType)
{
throw new BsonSerializationException(string.Format("Value class {0} cannot be deserialized.", (object)actualType.FullName));
}
BsonClassMap bsonClassMap = BsonClassMap.LookupClassMap(actualType);
if (bsonClassMap.IsAnonymous)
{
throw new InvalidOperationException("An anonymous class cannot be deserialized.");
}
// Added
object instance = CreateInstance(bsonClassMap);
// Added
if (bsonReader.CurrentBsonType != BsonType.Document)
{
throw new FileFormatException(string.Format("Expected a nested document representing the serialized form of a {0} value, but found a value of type {1} instead.", (object)actualType.FullName, (object)bsonReader.CurrentBsonType));
}
bsonReader.ReadStartDocument();
HashSet <BsonMemberMap> hashSet = new HashSet <BsonMemberMap>(bsonClassMap.MemberMaps);
IDiscriminatorConvention discriminatorConvention = BsonDefaultSerializer.LookupDiscriminatorConvention(nominalType);
while (bsonReader.ReadBsonType() != BsonType.EndOfDocument)
{
string elementName = bsonReader.ReadName();
if (elementName == discriminatorConvention.ElementName)
{
bsonReader.SkipValue();
}
else
{
BsonMemberMap memberMapForElement = bsonClassMap.GetMemberMapForElement(elementName);
if (memberMapForElement != null && memberMapForElement != bsonClassMap.ExtraElementsMemberMap)
{
this.DeserializeMember(bsonReader, instance, memberMapForElement);
hashSet.Remove(memberMapForElement);
}
else if (bsonClassMap.ExtraElementsMemberMap != null)
{
this.DeserializeExtraElement(bsonReader, instance, elementName, bsonClassMap.ExtraElementsMemberMap);
}
else
{
if (!bsonClassMap.IgnoreExtraElements)
{
throw new FileFormatException(string.Format("Element '{0}' does not match any field or property of class {1}.", (object)elementName, (object)bsonClassMap.ClassType.FullName));
}
bsonReader.SkipValue();
}
}
}
bsonReader.ReadEndDocument();
foreach (BsonMemberMap bsonMemberMap in hashSet)
{
if (bsonMemberMap.IsRequired)
{
string str = bsonMemberMap.MemberInfo.MemberType == MemberTypes.Field ? "field" : "property";
throw new FileFormatException(string.Format("Required element '{0}' for {1} '{2}' of class {3} is missing.", (object)bsonMemberMap.ElementName, (object)str, (object)bsonMemberMap.MemberName, (object)bsonClassMap.ClassType.FullName));
}
else if (bsonMemberMap.HasDefaultValue)
{
bsonMemberMap.ApplyDefaultValue(instance);
}
}
return(instance);
}
}
