/// <summary>
/// Converts the given JSON string value to the expected type as per OData conversion rules for JSON values.
/// </summary>
/// <param name="stringValue">String value to the converted.</param>
/// <param name="targetType">Target type to which the string value needs to be converted.</param>
/// <returns>Object which is in sync with the target type.</returns>
private static object ConvertStringValue(string stringValue, Type targetType)
{
// COMPAT 53: Support for System.Data.Linq.Binary and System.Xml.Linq.XElement
if (targetType == typeof(byte[]))
{
return(Convert.FromBase64String(stringValue));
}
if (targetType == typeof(Guid))
{
return(new Guid(stringValue));
}
// Convert.ChangeType does not support TimeSpan.
if (targetType == typeof(TimeSpan))
{
return(EdmValueParser.ParseDuration(stringValue));
}
// Date
if (targetType == typeof(Date))
{
return(PlatformHelper.ConvertStringToDate(stringValue));
}
// Time
if (targetType == typeof(TimeOfDay))
{
return(PlatformHelper.ConvertStringToTimeOfDay(stringValue));
}
// DateTimeOffset needs to be read using the XML rules (as per the JSON Light spec).
if (targetType == typeof(DateTimeOffset))
{
return(PlatformHelper.ConvertStringToDateTimeOffset(stringValue));
}
if (targetType == typeof(Double) || targetType == typeof(Single))
{
// Accept Infinity and -Infinity to preserve consistency
if (stringValue == CultureInfo.InvariantCulture.NumberFormat.PositiveInfinitySymbol)
{
stringValue = JsonValueUtils.ODataJsonPositiveInfinitySymbol;
}
else if (stringValue == CultureInfo.InvariantCulture.NumberFormat.NegativeInfinitySymbol)
{
stringValue = JsonValueUtils.ODataJsonNegativeInfinitySymbol;
}
return(Convert.ChangeType(stringValue, targetType, JsonValueUtils.ODataNumberFormatInfo));
}
// For string types, we support conversion to all possible primitive types
return(Convert.ChangeType(stringValue, targetType, CultureInfo.InvariantCulture));
}
/// <summary>
/// Attempts to parse a TimeOfDay value from the specified text.
/// </summary>
/// <param name="value">Input string</param>
/// <param name="result">The TimeOfDay resulting from parsing the string value</param>
/// <returns>true if the value was parsed successfully, false otherwise</returns>
internal static bool TryParseTimeOfDay(string value, out TimeOfDay?result)
{
try
{
result = PlatformHelper.ConvertStringToTimeOfDay(value);
return(true);
}
catch (FormatException)
{
result = null;
return(false);
}
}
/// <summary>
/// Converts a string to a TimeOfDay value.
/// </summary>
/// <param name="text">String text to convert.</param>
/// <param name="targetValue">After invocation, converted value.</param>
/// <returns>true if the value was converted; false otherwise.</returns>
internal static bool TryUriStringToTimeOfDay(string text, out TimeOfDay targetValue)
{
targetValue = default(TimeOfDay);
try
{
targetValue = PlatformHelper.ConvertStringToTimeOfDay(text);
return(true);
}
catch (FormatException)
{
return(false);
}
}
/// <summary>
/// Create an instance of primitive type from a string representation
/// </summary>
/// <param name="text">The string representation</param>
/// <returns>An instance of primitive type</returns>
internal override object Parse(string text)
{
return(PlatformHelper.ConvertStringToTimeOfDay(text));
}
internal static object ConvertStringToPrimitive(string text, IEdmPrimitiveTypeReference targetTypeReference)
{
Debug.Assert(text != null, "text != null");
Debug.Assert(targetTypeReference != null, "targetTypeReference != null");
try
{
EdmPrimitiveTypeKind primitiveKind = targetTypeReference.PrimitiveKind();
switch (primitiveKind)
{
case EdmPrimitiveTypeKind.Binary:
return(Convert.FromBase64String(text));
case EdmPrimitiveTypeKind.Boolean:
return(ConvertXmlBooleanValue(text));
case EdmPrimitiveTypeKind.Byte:
return(XmlConvert.ToByte(text));
case EdmPrimitiveTypeKind.DateTimeOffset:
return(PlatformHelper.ConvertStringToDateTimeOffset(text));
case EdmPrimitiveTypeKind.Decimal:
return(XmlConvert.ToDecimal(text));
case EdmPrimitiveTypeKind.Double:
return(XmlConvert.ToDouble(text));
case EdmPrimitiveTypeKind.Guid:
return(new Guid(text));
case EdmPrimitiveTypeKind.Int16:
return(XmlConvert.ToInt16(text));
case EdmPrimitiveTypeKind.Int32:
return(XmlConvert.ToInt32(text));
case EdmPrimitiveTypeKind.Int64:
return(XmlConvert.ToInt64(text));
case EdmPrimitiveTypeKind.SByte:
return(XmlConvert.ToSByte(text));
case EdmPrimitiveTypeKind.Single:
return(XmlConvert.ToSingle(text));
case EdmPrimitiveTypeKind.String:
return(text);
case EdmPrimitiveTypeKind.Duration:
return(EdmValueParser.ParseDuration(text));
case EdmPrimitiveTypeKind.Date:
return(PlatformHelper.ConvertStringToDate(text));
case EdmPrimitiveTypeKind.TimeOfDay:
return(PlatformHelper.ConvertStringToTimeOfDay(text));
case EdmPrimitiveTypeKind.Stream:
case EdmPrimitiveTypeKind.None:
case EdmPrimitiveTypeKind.Geography:
case EdmPrimitiveTypeKind.GeographyCollection:
case EdmPrimitiveTypeKind.GeographyPoint:
case EdmPrimitiveTypeKind.GeographyLineString:
case EdmPrimitiveTypeKind.GeographyPolygon:
case EdmPrimitiveTypeKind.GeometryCollection:
case EdmPrimitiveTypeKind.GeographyMultiPolygon:
case EdmPrimitiveTypeKind.GeographyMultiLineString:
case EdmPrimitiveTypeKind.GeographyMultiPoint:
case EdmPrimitiveTypeKind.Geometry:
case EdmPrimitiveTypeKind.GeometryPoint:
case EdmPrimitiveTypeKind.GeometryLineString:
case EdmPrimitiveTypeKind.GeometryPolygon:
case EdmPrimitiveTypeKind.GeometryMultiPolygon:
case EdmPrimitiveTypeKind.GeometryMultiLineString:
case EdmPrimitiveTypeKind.GeometryMultiPoint:
default:
// Note that Astoria supports XElement and Binary as well, but they are serialized as string or byte[]
// and the metadata will actually talk about string and byte[] as well. Astoria will perform the conversion if necessary.
throw new ODataException(Strings.General_InternalError(InternalErrorCodes.AtomValueUtils_ConvertStringToPrimitive));
}
}
catch (Exception e)
{
if (!ExceptionUtils.IsCatchableExceptionType(e))
{
throw;
}
throw ReaderValidationUtils.GetPrimitiveTypeConversionException(targetTypeReference, e, text);
}
}