Simple serialize ODataQueryOptions - serialization

Question

I'm trying to:
[EnableQuery]
[HttpGet]
[ODataRoute("")]
public IHttpActionResult Get(ODataQueryOptions<UserODataModel> options)
{
var users = _repository.RetrieveOData();
var serialQuery = JsonConvert.SerializeObject(options, jsonOptions);
//save serialQuery somewhere
return Ok(users);
}
But got
Newtonsoft.Json.JsonSerializationException: 'Error getting value from 'ReadTimeout' on 'Microsoft.Owin.Host.SystemWeb.CallStreams.InputStream'.'
"Timeouts are not supported on this stream."
I know there is already a question about serialize Stream:
Newtonsoft Json.net - how to serialize content of a stream?
But in this case i can't "extract stream value" from ODataQueryOptions, or can I?
Some ideia?

Answer 1

Since we work on the same company, if anyone is interested, we found a way, maybe not the pretty way, to serialize an ODataQueryOptions:
public static ODataQueryOptions DeserializeQueryOptions(SerializedQueryOptions options)
{
var uri = new Uri(teste.OriginalUri);
var model = ODataConfig.Model; //GetEdmModel
var segment = model.EntityContainer.FindEntitySet(options.EdmType);
var newPath = new Microsoft.AspNet.OData.Routing.ODataPath(new EntitySetSegment(segment));
var httpConfiguration = new HttpConfiguration();
httpConfiguration.EnableDependencyInjection();
var request = new HttpRequestMessage(HttpMethod.Get, uri)
{
Properties =
{
{ HttpPropertyKeys.HttpConfigurationKey, httpConfiguration },
}
};
var context = new ODataQueryContext(model, options.EntityType, newPath);
var oDataQueryOptions = new ODataQueryOptions(context, request);
return oDataQueryOptions;
}
public static SerializedQueryOptions SerializeQueryOptions(ODataQueryOptions options)
{
return new SerializedQueryOptions
{
OriginalUri = options.Request.RequestUri.AbsoluteUri,
EdmType = options.Context.NavigationSource.Name,
EntityType = options.Context.ElementClrType
};
}
After you serialize it to an object you can serialize it to a JSON string:
var queryOptionsSerialized = new SerializedQueryOptions()
{
OriginalUri = "http://localhost:25723/odata/users?$skip=0&$top=2&$orderby=fullName&$count=true",
EdmType = "users",
EntityType = typeof(UserODataModel)
};
var json = JsonConvert.SerializeObject(queryOptionsSerialized);
var deserialized = JsonConvert.DeserializeObject<SerializedQueryOptions>(json);
var options = ODataQueryOptionsHelper.DeserializeQueryOptions(deserialized);

Answer 2

In case One is not using OData routing or using an ApiController (not ODataController),
modify the way of Obtaining ODataPath to:
ODataUriParser parser = new ODataUriParser(model, serviceRoot, requestUri);
ODataPath path = parser.ParsePath();
//var newPath = new Microsoft.AspNet.OData.Routing.ODataPath(new EntitySetSegment(segment));
Microsoft.AspNet.OData.Routing.ODataPath newPath = new Microsoft.AspNet.OData.Routing.ODataPath(path.FirstOrDefault());
where the serviceRoot is the Url part other that the path defined in the model.