The document describes an evaluation service that allows users to manage evaluations and provides various interfaces and endpoints for working with evaluation data. It defines interfaces for getting, adding, and removing evaluations and locations. It also shows examples of hosting the service using WebServiceHost, adding endpoints, and returning different response formats like JSON, Atom, and RSS feeds.

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getUser()
addUser()
removeUser()
...
getLocation()
addLocation()
...
User { }
Location { }
<user>
<name>Jane User</name>
<gender>female</gender>
<location href="http://example.org/locations/us/ny/nyc"
>New York City, NY, US</location>
</user>

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15. ...
ServiceHost host = new ServiceHost(typeof(EvalService),
new Uri("http://localhost:8080/evals"));
host.AddServiceEndpoint(typeof(IEvals),
new WebHttpBinding(), "");
host.Description.Endpoints[0].Behaviors.Add(
new WebHttpBehavior());
host.Open(); // service is up and running
Console.ReadLine(); // hold process open
...

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...
WebServiceHost host = new WebServiceHost(
typeof(EvalService),
new Uri("http://localhost:8080/evals"));
host.Open(); // service is up and running
Console.ReadLine(); // hold process open
...

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[ServiceContract]
public interface IEvalService
{
[WebGet(UriTemplate="evals?name={name}&score={score}")]
[OperationContract]
List<Eval> GetEvals(string name, int score);
...

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[ServiceContract]
public interface IEvals
{
[WebInvoke(UriTemplate ="/evals?name={name}",Method="PUT")]
[OperationContract]
void SubmitEval(string name, Eval eval /* body */);
...

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/services/evals?name={name}&detailed={detailed}

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[ServiceKnownType(typeof(Atom10FeedFormatter))]
[ServiceKnownType(typeof(Rss20FeedFormatter))]
[ServiceContract]
public interface IEvalService {
[WebGet(UriTemplate = "evalsfeed")]
[OperationContract]
SyndicationFeedFormatter GetEvalsFeed();
...
}

23. public class EvalService : IEvalService {
public SyndicationFeedFormatter GetEvalsFeed() {
List<Eval> evals = this.GetEvals();
SyndicationFeed feed = CreateSyndicationFeed(evals);
// figure out what format the client wants
WebOperationContext ctx = WebOperationContext.Current;
string format =
ctx.IncomingRequest.UriTemplateMatch.QueryParameters["format"];
// return the
if (format !=
return new
else
return new
}
...
right type of formatted feed
null && format.Equals("atom"))
Atom10FeedFormatter(feed);
Rss20FeedFormatter(feed);

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[ServiceContract]
public interface IEvals
{
[WebGet(UriTemplate = "/evals?name={nameFilter}",
ResponseFormat = WebMessageFormat.Json)]
[OperationContract]
List<Eval> GetCurrentEvals(string nameFilter);
...

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<%@ ServiceHost Language="C#" Service="EvalService" Factory=
"System.ServiceModel.Activation.WebScriptServiceHostFactory" %>

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