/// <summary>
/// Maps a BsonValue to a .NET value.
/// </summary>
/// <param name="bsonValue">The BsonValue.</param>
/// <param name="options">The BsonTypeMapperOptions.</param>
/// <returns>The mapped .NET value.</returns>
public static object MapToDotNetValue(BsonValue bsonValue, BsonTypeMapperOptions options)
{
switch (bsonValue.BsonType)
{
case BsonType.Array:
var bsonArray = (BsonArray)bsonValue;
if (options.MapBsonArrayTo == typeof(BsonArray))
{
return(bsonArray);
}
else if (options.MapBsonArrayTo == typeof(object[]))
{
var array = new object[bsonArray.Count];
for (int i = 0; i < bsonArray.Count; i++)
{
array[i] = MapToDotNetValue(bsonArray[i], options);
}
return(array);
}
else if (typeof(IList <object>).IsAssignableFrom(options.MapBsonArrayTo))
{
var list = (IList <object>)Activator.CreateInstance(options.MapBsonArrayTo);
for (int i = 0; i < bsonArray.Count; i++)
{
list.Add(MapToDotNetValue(bsonArray[i], options));
}
return(list);
}
else if (typeof(IList).IsAssignableFrom(options.MapBsonArrayTo))
{
var list = (IList)Activator.CreateInstance(options.MapBsonArrayTo);
for (int i = 0; i < bsonArray.Count; i++)
{
list.Add(MapToDotNetValue(bsonArray[i], options));
}
return(list);
}
else
{
var message = string.Format("A BsonArray can't be mapped to a {0}.", BsonUtils.GetFriendlyTypeName(options.MapBsonArrayTo));
throw new NotSupportedException(message);
}
case BsonType.Binary:
#pragma warning disable 618 // about obsolete BsonBinarySubType.OldBinary
var bsonBinaryData = (BsonBinaryData)bsonValue;
if (bsonBinaryData.SubType == BsonBinarySubType.Binary ||
bsonBinaryData.SubType == BsonBinarySubType.OldBinary && options.MapOldBinaryToByteArray)
{
return(bsonBinaryData.Bytes);
}
else if (bsonBinaryData.SubType == BsonBinarySubType.UuidLegacy || bsonBinaryData.SubType == BsonBinarySubType.UuidStandard)
{
return(bsonBinaryData.ToGuid());
}
else
{
return(bsonBinaryData); // unmapped
}
#pragma warning restore 618
case BsonType.Boolean:
return(bsonValue.AsBoolean);
case BsonType.DateTime:
return(bsonValue.AsUniversalTime);
case BsonType.Document:
var bsonDocument = (BsonDocument)bsonValue;
if (options.MapBsonDocumentTo == typeof(BsonDocument))
{
return(bsonDocument);
}
else if (typeof(IDictionary <string, object>).IsAssignableFrom(options.MapBsonDocumentTo))
{
var dictionary = (IDictionary <string, object>)Activator.CreateInstance(options.MapBsonDocumentTo);
foreach (var element in bsonDocument.Elements)
{
var mappedValue = MapToDotNetValue(element.Value, options);
if (dictionary.ContainsKey(element.Name))
{
switch (options.DuplicateNameHandling)
{
case DuplicateNameHandling.Ignore:
break;
case DuplicateNameHandling.Overwrite:
default:
dictionary[element.Name] = mappedValue;
break;
case DuplicateNameHandling.ThrowException:
var message = string.Format("Duplicate element name '{0}'.", element.Name);
throw new ArgumentOutOfRangeException(message);
}
}
else
{
dictionary.Add(element.Name, mappedValue);
}
}
return(dictionary);
}
else if (typeof(IDictionary).IsAssignableFrom(options.MapBsonDocumentTo))
{
var dictionary = (IDictionary)Activator.CreateInstance(options.MapBsonDocumentTo);
foreach (var element in bsonDocument.Elements)
{
var mappedValue = MapToDotNetValue(element.Value, options);
if (dictionary.Contains(element.Name))
{
switch (options.DuplicateNameHandling)
{
case DuplicateNameHandling.Ignore:
break;
case DuplicateNameHandling.Overwrite:
default:
dictionary[element.Name] = mappedValue;
break;
case DuplicateNameHandling.ThrowException:
var message = string.Format("Duplicate element name '{0}'.", element.Name);
throw new ArgumentOutOfRangeException(message);
}
}
else
{
dictionary.Add(element.Name, mappedValue);
}
}
return(dictionary);
}
else
{
var message = string.Format("A BsonDocument can't be mapped to a {0}.", BsonUtils.GetFriendlyTypeName(options.MapBsonArrayTo));
throw new NotSupportedException(message);
}
case BsonType.Double:
return(bsonValue.AsDouble);
case BsonType.Int32:
return(bsonValue.AsInt32);
case BsonType.Int64:
return(bsonValue.AsInt64);
case BsonType.Null:
return(null); // BsonValue.Null maps to C# null
case BsonType.ObjectId:
return(bsonValue.AsObjectId);
case BsonType.String:
return(bsonValue.AsString);
case BsonType.JavaScript:
case BsonType.JavaScriptWithScope:
case BsonType.MaxKey:
case BsonType.MinKey:
case BsonType.RegularExpression:
case BsonType.Symbol:
case BsonType.Timestamp:
case BsonType.Undefined:
default:
return(bsonValue); // unmapped
}
}
/// <summary>
/// Maps a BsonValue to a .NET value.
/// </summary>
/// <param name="bsonValue">The BsonValue.</param>
/// <param name="options">The BsonTypeMapperOptions.</param>
/// <returns>The mapped .NET value.</returns>
public static object MapToDotNetValue(BsonValue bsonValue, BsonTypeMapperOptions options)
{
switch (bsonValue.BsonType)
{
case BsonType.Array:
var bsonArray = (BsonArray)bsonValue;
if (options.MapBsonArrayTo == typeof(BsonArray))
{
return bsonArray;
}
else if (options.MapBsonArrayTo == typeof(object[]))
{
var array = new object[bsonArray.Count];
for (int i = 0; i < bsonArray.Count; i++)
{
array[i] = MapToDotNetValue(bsonArray[i], options);
}
return array;
}
else if (typeof(IList<object>).IsAssignableFrom(options.MapBsonArrayTo))
{
var list = (IList<object>)Activator.CreateInstance(options.MapBsonArrayTo);
for (int i = 0; i < bsonArray.Count; i++)
{
list.Add(MapToDotNetValue(bsonArray[i], options));
}
return list;
}
else if (typeof(IList).IsAssignableFrom(options.MapBsonArrayTo))
{
var list = (IList)Activator.CreateInstance(options.MapBsonArrayTo);
for (int i = 0; i < bsonArray.Count; i++)
{
list.Add(MapToDotNetValue(bsonArray[i], options));
}
return list;
}
else
{
var message = string.Format("A BsonArray can't be mapped to a {0}.", BsonUtils.GetFriendlyTypeName(options.MapBsonArrayTo));
throw new NotSupportedException(message);
}
case BsonType.Binary:
#pragma warning disable 618 // about obsolete BsonBinarySubType.OldBinary
var bsonBinaryData = (BsonBinaryData)bsonValue;
if (bsonBinaryData.SubType == BsonBinarySubType.Binary ||
bsonBinaryData.SubType == BsonBinarySubType.OldBinary && options.MapOldBinaryToByteArray)
{
return bsonBinaryData.Bytes;
}
else if (bsonBinaryData.SubType == BsonBinarySubType.UuidLegacy || bsonBinaryData.SubType == BsonBinarySubType.UuidStandard)
{
return bsonBinaryData.ToGuid();
}
else
{
return bsonBinaryData; // unmapped
}
#pragma warning restore 618
case BsonType.Boolean:
return bsonValue.AsBoolean;
case BsonType.DateTime:
return bsonValue.ToUniversalTime();
case BsonType.Document:
var bsonDocument = (BsonDocument)bsonValue;
if (options.MapBsonDocumentTo == typeof(BsonDocument))
{
return bsonDocument;
}
else if (typeof(IDictionary<string, object>).IsAssignableFrom(options.MapBsonDocumentTo))
{
var dictionary = (IDictionary<string, object>)Activator.CreateInstance(options.MapBsonDocumentTo);
foreach (var element in bsonDocument.Elements)
{
var mappedValue = MapToDotNetValue(element.Value, options);
if (dictionary.ContainsKey(element.Name))
{
switch (options.DuplicateNameHandling)
{
case DuplicateNameHandling.Ignore:
break;
case DuplicateNameHandling.Overwrite:
default:
dictionary[element.Name] = mappedValue;
break;
case DuplicateNameHandling.ThrowException:
var message = string.Format("Duplicate element name '{0}'.", element.Name);
throw new ArgumentOutOfRangeException("bsonValue", message);
}
}
else
{
dictionary.Add(element.Name, mappedValue);
}
}
return dictionary;
}
else if (typeof(IDictionary).IsAssignableFrom(options.MapBsonDocumentTo))
{
var dictionary = (IDictionary)Activator.CreateInstance(options.MapBsonDocumentTo);
foreach (var element in bsonDocument.Elements)
{
var mappedValue = MapToDotNetValue(element.Value, options);
if (dictionary.Contains(element.Name))
{
switch (options.DuplicateNameHandling)
{
case DuplicateNameHandling.Ignore:
break;
case DuplicateNameHandling.Overwrite:
default:
dictionary[element.Name] = mappedValue;
break;
case DuplicateNameHandling.ThrowException:
var message = string.Format("Duplicate element name '{0}'.", element.Name);
throw new ArgumentOutOfRangeException("bsonValue", message);
}
}
else
{
dictionary.Add(element.Name, mappedValue);
}
}
return dictionary;
}
else
{
var message = string.Format("A BsonDocument can't be mapped to a {0}.", BsonUtils.GetFriendlyTypeName(options.MapBsonArrayTo));
throw new NotSupportedException(message);
}
case BsonType.Double:
return bsonValue.AsDouble;
case BsonType.Int32:
return bsonValue.AsInt32;
case BsonType.Int64:
return bsonValue.AsInt64;
case BsonType.Null:
return null; // BsonValue.Null maps to C# null
case BsonType.ObjectId:
return bsonValue.AsObjectId;
case BsonType.String:
return bsonValue.AsString;
case BsonType.JavaScript:
case BsonType.JavaScriptWithScope:
case BsonType.MaxKey:
case BsonType.MinKey:
case BsonType.RegularExpression:
case BsonType.Symbol:
case BsonType.Timestamp:
case BsonType.Undefined:
default:
return bsonValue; // unmapped
}
}