Get Access Token with BreezeSharp - breeze

Question

I need to use EntityQuery in BreezeSharp to get Access Token from my Breeze WebAPI
I have a class called TokenResponseModel for deserializing my json from the server as follows:
using Newtonsoft.Json;
namespace CMIS.Integration.Common
{
class TokenResponseModel
{
[JsonProperty("access_token")]
public string AccessToken { get; set; }
[JsonProperty("token_type")]
public string TokenType { get; set; }
[JsonProperty("expires_in")]
public int ExpiresIn { get; set; }
[JsonProperty("userName")]
public string Username { get; set; }
[JsonProperty(".issued")]
public string IssuedAt { get; set; }
[JsonProperty(".expires")]
public string ExpiresAt { get; set; }
}
}
I have the following code to run:
EntityQuery query=EntityQuery.From("Token",new TokenResponseModel()).
WithParameters(new Dictionary<string,object>{{"grant_type","password"},{"username","my_username"},{"password","my_password"}});
EntityManager mng = new EntityManager(baseUrl);
var tokenobject = await query.Execute(mng);
When I run it, I Get an error. It requires metadata which is not there for the "/Token" method on the server.
How Can I call it with BreezeSharp.
With RestSharp I can do it as follows:
RestRequest request = new RestRequest("/Token", Method.POST);
request.AddParameter("grant_type", "password");
request.AddParameter("username", "my_username");
request.AddParameter("password", "my_password");
RestClient client = new RestClient(baseUrl);
var response = client.Execute<AccessToken>(request);
And this works fine.
Thanks
More Explanation:
What I want to say is that sometimes I just need to get the result from the breeze server just i a JSON format. I don't want it mapped to any objects on the client. A good example is my case for authenticating a user using the Token method. I know how to parse the JSON myself. I just want breeze to bring the result from the call below:
string baseUrl = "http://myserver_url/NHIFService/";
EntityQuery query = EntityQuery.From<string>("Token").WithParameters(new new Dictionary<string, object> { { "grant_type", "password" }, { "username", "my_username" }, { "password", "my_password" } });
EntityManager mng = new EntityManager(baseUrl);
var tokenobject = await query.Execute(mng);
I want to be able to do this because sometimes I return anonymous objects from the server that do not have a match on the client or server.
Can breese sharp allow me to do this without caring about the metadata. Or how can I supress metadata fetching.
Thank you.

Answer 1

After going through the BreezeSharp Source Code I came with the solution for doing what I wanted. The guys at IdeaBlade have created this DataService class that enables returning RAW JSON from the server without even caring about the Metadata. Here is how I did it:
string token = await AuthenticationHelper.GetAccessToken();
string baseUrl = "http://my_server_url/appname/breeze/my_controller/";
DataService ds = new DataService(baseUrl);
string resourcePath = string.Format("GetCardDetails?CardNo={0}", cardNoTextEdit.EditValue);
ds.HttpClient.DefaultRequestHeaders.Add("Authorization", "Bearer " + token);
string result=await ds.GetAsync(resourcePath);
Congratulation guys Breeze Sharp is awesome.