/// <summary>
/// 检查是否具有扩展数据字段
/// </summary>
/// <param name="cache"></param>
/// <returns></returns>
public bool DetermineExtensionDataProperty(Dictionary <string, BinaryPropertyInfo> cache)
{
// 一个类型中只能由一个扩展字段(由BinaryExtensionDataAttribute标注)
BinaryPropertyInfo binaryPropertyInfo = GetPropertyWithUniqueAttribute(Type, typeof(BinaryExtensionDataAttribute), cache);
if (binaryPropertyInfo != null)
{
Type declaredPropertyType = binaryPropertyInfo.DeclaredPropertyType;
if (typeof(IDictionary <string, object>).IsAssignableFrom(declaredPropertyType))
{
BinaryConverter converter = Options.GetConverter(declaredPropertyType);
Debug.Assert(converter != null);
}
else
{
ThrowHelper.ThrowInvalidOperationException_SerializationDataExtensionPropertyInvalid(Type, binaryPropertyInfo);
}
DataExtensionProperty = binaryPropertyInfo;
return(true);
}
return(false);
}
