/// <summary>
/// Called by an implementation of IJsonizable to store a data member which implements IJsonizable.
/// </summary>
/// <param name="name">The object member's name</param>
/// <param name="item">The object to store</param>
/// <param name="isFinal">Is this the last member the caller will add?</param>
internal void AddMember(string name, IJsonizable item, bool isFinal)
{
Jsonizer subJsonizer = new Jsonizer(item);
builder.AppendFormat("\"{0}\": {1}", name, subJsonizer.ToJsonString());
if (!isFinal)
{
builder.Append(",");
}
}
/// <summary>
/// Entry point for handling the HTTP request. ProcessRequest manages the process of
/// determining which method was requested, invoking it, and returning a JSON response.
/// Part of IHttpHandler
/// </summary>
/// <param name="context">Object containing the details of current HTTP request and response.</param>
public void ProcessRequest(HttpContext context)
{
HttpRequest request = context.Request;
HttpResponse response = context.Response;
try
{
// Get the particular method being invoked.
ApiMethodType method = ParseApiMethod(request);
// Get object for invoking the specific dictionary method.
Invoker invoker = Invoker.Create(method, request);
// Invoke the requested dictionary method.
IJsonizable result = invoker.Invoke();
// Put together the JSON response.
Jsonizer json = new Jsonizer(result);
response.ContentType = "application/json";
response.Write(json.ToJsonString());
}
// There was something wrong with the request that prevented us from
// being able to invoke a method.
catch (HttpParseException ex)
{
response.Status = ex.Message;
response.StatusCode = 400;
}
// Something went wrong in our code.
catch (Exception ex)
{
log.ErrorFormat(errorProcessFormat, ex, request.RawUrl);
response.StatusDescription = "Error processing dictionary request.";
response.StatusCode = 500;
}
}
/// <summary>
/// Initialization.
/// </summary>
/// <param name="rootItem">The object hierarchy's root item.</param>
internal Jsonizer(IJsonizable rootItem)
{
builder.Append("{");
rootItem.Jsonize(this);
builder.Append("}");
}
