Syntax to call an oData Method?

[sitefinitysteve]

How do I call an odata method?

This is what I need to call

http://odata.site.com/USDA.svc/GetNutritionalInfo?ndbno=1001&seq=107&servingsize=1

Works though fiddler, however the kendo DS is appending these $format=json&$inlinecount=allpages&$callback=callback which is throwing a error 400 bad request.

Looks like if I remove this parameter fiddler, it returns the proper value
"$inlinecount=allpages"

How can I prevent that from being passed?

[Rosen]

Hello Steve,

Could you please verify that the OData service is V2 compatible. For example if you are using WCF DataService the following line does exists in the InitializeService:

config.DataServiceBehavior.MaxProtocolVersion = DataServiceProtocolVersion.V2;

Also you may enable the verbose errors to see more detail description of the error you are getting.All the best,
Rosen
the Telerik team

[sitefinitysteve]

Ok, I'll enable Verbose...I am running V2 though

using System;

using System.Collections.Generic;

using System.Data.Objects;

using System.Data.Services;

using System.Data.Services.Common;

using System.Linq;

using System.ServiceModel.Web;

using System.Web;

using DataServicesJSONP;

 

namespace My.oData

{

    [JSONPSupportBehavior]

    public class USDA : DataService<MyEntities>

    {

        // This method is called only once to initialize service-wide policies.

        public static void InitializeService(DataServiceConfiguration config)

        {

            config.SetEntitySetAccessRule("*", EntitySetRights.AllRead);

            //Set a reasonable paging site

            config.SetEntitySetPageSize("*", 25);

 

            config.SetServiceOperationAccessRule("GetNutritionalInfo", ServiceOperationRights.AllRead);

            config.SetServiceOperationAccessRule("TestMethod", ServiceOperationRights.All);

 

            //config.UseVerboseErrors = true;

            config.DataServiceBehavior.MaxProtocolVersion = DataServiceProtocolVersion.V2;

        }

 

        protected override void OnStartProcessingRequest(ProcessRequestArgs args)

        {

            base.OnStartProcessingRequest(args);

 

            HttpCachePolicy c = HttpContext.Current.Response.Cache;

            c.SetCacheability(HttpCacheability.ServerAndPrivate);

            c.SetExpires(HttpContext.Current.Timestamp.AddSeconds(60));

            c.VaryByHeaders["Accept"] = true;

            c.VaryByHeaders["Accept-Charset"] = true;

            c.VaryByHeaders["Accept-Encoding"] = true;

            c.VaryByParams["*"] = true;

        }

 

        [WebInvoke(Method = "POST")]

        [WebGet]

        public getFoodNutritionalInfo_Result GetNutritionalInfo(int ndbno, double servingsize, int seq)

        {

            MyEntities entities = newMyEntities();

            ObjectResult<getFoodNutritionalInfo_Result> result = entities.getFoodNutritionalInfo(ndbno, servingsize, seq);

 

            return result.FirstOrDefault();

        }

 

        [WebInvoke(Method = "POST")]

        [WebGet]

        public bool TestMethod()

        {

            return true;

        }

    }

}

So even calling "TestMethod" fails with the KendoDS...and it does nothing but return true

[sitefinitysteve]

This is the Verbose error

callback({

"error": {

"code": "", "message": {

"lang": "en-US", "value": "Query options $expand, $filter, $orderby, $inlinecount, $skip and $top cannot be applied to the requested resource."

}

}

})

...so how do I stop the DS applying it?

[Rosen]

Hello Steve,

The error you are getting is cause by the fact that the parameters are applicable only for methods which return IEnumerable. However, your method returns a plaint type instead, which also is not valid binding for our DataSource too. The DataSource expects some kind of array to be received from the server.

All the best,
Rosen
the Telerik team

[sitefinitysteve]

Changing it to ObjectResult<> or IEnumerable<> directly yields the exact same error

[WebInvoke(Method = "POST")]

        [WebGet]

        public IEnumerable<getFoodNutritionalInfo_Result> GetNutritionalInfo(int ndbno, double servingsize, int seq)

        {

            GourmetSleuthEntities entities = new GourmetSleuthEntities();

            ObjectResult<getFoodNutritionalInfo_Result> result = entities.getFoodNutritionalInfo(ndbno, servingsize, seq);

 

            return result;

        }

[WebInvoke(Method = "POST")]

        [WebGet]

        public ObjectResult<getFoodNutritionalInfo_Result> GetNutritionalInfo(int ndbno, double servingsize, int seq)

        {

            GourmetSleuthEntities entities = new GourmetSleuthEntities();

            ObjectResult<getFoodNutritionalInfo_Result> result = entities.getFoodNutritionalInfo(ndbno, servingsize, seq);

 

            return result;

        }

[Rosen]

Hi Steve,

Unfortunately, I'm unable to recreate the behavior locally, therefore could you please provide a small sample in which this can be observed locally.

All the best,
Rosen
the Telerik team

[Grace]

Hi Steve,

Did you resolve this issue? I'm getting the same behavior and looking for a resolution. Thanks!

[sitefinitysteve]

Yes, I think in another forum thread, when I get home I'll post the snippit, but I think off the top of my head I just didn't use oData as the type but instead jsonp

[Grace]

Oh thank you! That'd be wonderful.

[Courouble Damien]

Would like to give us your code ? I'm facing similar issue here !

Thanks