Not able to serialize Object type

[Nihar Mishra]

Hi,

I have below class which is generated from .net client.

When i try to save in redis cache, i get the "Not able to serialize Object type" error.

Please help me how to resolve it. 

  public partial class AttributeValueType

    {

        [DataMember]

        private object itemField;

        [System.Xml.Serialization.XmlElementAttribute("IntValue", typeof(int))]

        [System.Xml.Serialization.XmlElementAttribute("StringValue", typeof(string))]

        [System.Xml.Serialization.XmlElementAttribute("dateValue", typeof(System.DateTime), DataType = "date")]

        [System.Xml.Serialization.XmlElementAttribute("doubleValue", typeof(double))]

        public object Item

        {

            get { return this.itemField; }

            set { this.itemField = value; }

        }

    }

[Marc Gravell]

 I'm assuming this is protobuf-net; the message is right : the library can't work with "object itemField". Perhaps the best thing would be to treat this like a "oneof" (in .proto terms) and have an accessor per possible type. For example:

    [ProtoMember(n)]

    private int ValueInt32 {

        get => (int)itemField;

        set => itemField = value;

    }

    private bool ShouldSerializeValueInt32() => itemField is int;

(with a different "n" per possible type)

The "ShouldSerialize..." pattern is a .net idiom supported by protobuf-net that provides memberwise conditional serialization.

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[Marc Gravell]

Yes, something like that; example: https://pastebin.com/CUvWz00L

On 23 October 2017 at 09:38, Nihar Mishra <itnm...@gmail.com> wrote:

Hi Marc,

Thanks a lot. Yes this is protobuf-net.

Still i don't get how to modify AttributeValueType class.

Do you mean that i should write 4 protomembers for the 4 types?

best Regards,

Nihar

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Regards,

Marc

[Marc Gravell]

For completeness (mostly in case someone finds this via search in the future), if you were using .proto schema-based generation, "oneof" is your friend: https://protogen.marcgravell.com/#g01989f8da1f4ce8ab358756115478c37 (click "Generate" once the gist has loaded)

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Regards,

Marc