Create a custom resolver to map properties into separate models

Question

I am writing a custom extension to DefaultContractResolver to map names between a JSON string and models to be deserialized. The naming in these models is not consistent and I was specifically asked to not change them (renaming, adding attributes, etc).

The json looks like this

"parameter": {
    "alarms": [
        {
            "id": 1,
            "name": "alarm1",
            "type": 5,
            "min": 0,
            "max": 2
        }
    ],
    "settings": [
        {
             "id": 1,
             "name": "setting1",
             "description": "something here"
             "type": 1,
             "value": 2
        }
    ]
}

The Parameter class (output) has models for Alarms and Settings. For example, these models look like this:

public class Alarm
{
    public int AlarmId { get; set; }
    public string AlarmName { get; set; }
    public AlarmType RbcType { get; set; }
    public int MinimumTolerated { get; set; }
    public int MaximumTolerated { get; set; }
}

public class Setting
{
    public int SettId { get; set; }
    public string Name { get; set; }
    public string Description { get; set; }
    public SettingType Type { get; set; }
    public int IntValue { get; set; }
}

As an example the value of "id" in the json can relate to AlarmId or SettId, so I cannot have just one resolver to perform the ResolvePropertyName(string propertyName)

And I don't know how to get about with this.

Answer 1

I don't think that you need any mapper, I would use this code

    var jObj = JObject.Parse(json)["parameter"];

    var parameters = new
    {
        alarms = jObj["alarms"].Select(x => new Alarm { AlarmId = (int)x["id"], AlarmName = (string)x["name"] }).ToList(),
        settings = jObj["settings"].Select(x => new Setting { SettId = (int)x["id"] }).ToList()
    };