/// <summary>
/// Constructs this <see cref="MansionHttpHandlerBase"/> with the given <paramref name="requestHandler"/>.
/// </summary>
/// <param name="requestContext">The <see cref="MansionWebContext"/> for this request.</param>
/// <param name="requestHandler">The <see cref="RequestHandler"/> which does the actual work of handling the request.</param>
/// <exception cref="ArgumentNullException">Thrown if <paramref name="requestHandler"/> is null.</exception>
protected MansionHttpHandlerBase(MansionWebContext requestContext, RequestHandler requestHandler)
{
// validate arguments
if (requestContext == null)
throw new ArgumentNullException("requestContext");
if (requestHandler == null)
throw new ArgumentNullException("requestHandler");
// set values
webRequestContext = requestContext;
this.requestHandler = requestHandler;
}
/// <summary>
/// Constructs this <see cref="MansionHttpHandlerBase"/> with the given <paramref name="requestHandler"/>.
/// </summary>
/// <param name="requestContext">The <see cref="MansionWebContext"/> for this request.</param>
/// <param name="requestHandler">The <see cref="RequestHandler"/> which does the actual work of handling the request.</param>
/// <exception cref="ArgumentNullException">Thrown if <paramref name="requestHandler"/> is null.</exception>
public StatelessHttpHander(MansionWebContext requestContext, RequestHandler requestHandler) : base(requestContext, requestHandler)
{
}
/// <summary>
/// Returns an instance of a class that implements the <see cref="T:System.Web.IHttpHandler"/> interface.
/// </summary>
/// <returns>
/// A new <see cref="T:System.Web.IHttpHandler"/> object that processes the request.
/// </returns>
/// <param name="context">An instance of the <see cref="T:System.Web.HttpContextBase"/> class that provides references to intrinsic server objects (for example, Request, Response, Session, and Server) used to service HTTP requests. </param>
/// <param name="requestHandler">The <see cref="RequestHandler"/> which does the actual work of handling the request.</param>
protected virtual IHttpHandler DoGetHandler(MansionWebContext context, RequestHandler requestHandler)
{
// determine if the request is stateful or not
string requiredStateString;
if (!context.Request.RequestUrl.QueryString.TryGetValue(StateQueryStringParameterName, out requiredStateString))
requiredStateString = string.Empty;
// parse the required session state from the query srting
var requiredByQueryString = RequiresSessionState.Parse(requiredStateString);
// determine the highest state
var highestStateDemanded = RequiresSessionState.DetermineHighestDemand(requiredByQueryString, requestHandler.MinimalSessionStateDemand);
// switch to the corrent http handler
if (highestStateDemanded == RequiresSessionState.Full)
return new StatefulHttpHandler(context, requestHandler);
if (highestStateDemanded == RequiresSessionState.ReadOnly)
return new ReadOnlyStateHttpHandler(context, requestHandler);
if (highestStateDemanded == RequiresSessionState.No)
return new StatelessHttpHander(context, requestHandler);
throw new InvalidOperationException("Uknown session state demanded");
}
/// <summary>
/// Constructs this <see cref="MansionHttpHandlerBase"/> with the given <paramref name="requestHandler"/>.
/// </summary>
/// <param name="requestContext">The <see cref="MansionWebContext"/> for this request.</param>
/// <param name="requestHandler">The <see cref="RequestHandler"/> which does the actual work of handling the request.</param>
/// <exception cref="ArgumentNullException">Thrown if <paramref name="requestHandler"/> is null.</exception>
public ReadOnlyStateHttpHandler(MansionWebContext requestContext, RequestHandler requestHandler) : base(requestContext, requestHandler)
{
}
