/// <summary> /// Loads the Handler Configuration /// </summary> /// <param name="context">HTTP Context</param> /// <param name="basePath">Base Path of the Handler which this method will determine</param> /// <returns></returns> protected override BaseProtocolHandlerConfiguration LoadConfig(HttpContext context, out String basePath) { basePath = context.Request.Path; //Is our Configuration already cached? Object temp = context.Cache[context.Request.Path]; if (temp != null) { if (temp is BaseProtocolHandlerConfiguration) { return((BaseProtocolHandlerConfiguration)temp); } else { context.Cache.Remove(context.Request.Path); } } //Check the Configuration File is specified String configFile = context.Server.MapPath(ConfigurationManager.AppSettings["dotNetRDFConfig"]); if (configFile == null) { throw new DotNetRdfConfigurationException("Unable to load Protocol Handler Configuration as the Web.Config file does not specify a 'dotNetRDFConfig' AppSetting to specify the RDF configuration file to use"); } IGraph g = WebConfigurationLoader.LoadConfigurationGraph(context, configFile); //Then check there is configuration associated with the expected URI String objUri = "dotnetrdf:" + context.Request.Path; INode objNode = g.GetUriNode(UriFactory.Create(objUri)); if (objNode == null) { throw new DotNetRdfConfigurationException("Unable to load Protocol Handler Configuration as the RDF configuration file does not have any configuration associated with the URI <dotnetrdf:" + context.Request.Path + "> as required"); } ProtocolHandlerConfiguration config = new ProtocolHandlerConfiguration(context, g, objNode); //Finally cache the Configuration before returning it if (config.CacheSliding) { context.Cache.Add(context.Request.Path, config, new System.Web.Caching.CacheDependency(configFile), System.Web.Caching.Cache.NoAbsoluteExpiration, new TimeSpan(0, config.CacheDuration, 0), System.Web.Caching.CacheItemPriority.Normal, null); } else { context.Cache.Add(context.Request.Path, config, new System.Web.Caching.CacheDependency(configFile), DateTime.Now.AddMinutes(config.CacheDuration), System.Web.Caching.Cache.NoSlidingExpiration, System.Web.Caching.CacheItemPriority.Normal, null); } return(config); }
/// <summary> /// Loads the Handler Configuration /// </summary> /// <param name="context">HTTP Context</param> /// <param name="basePath">Base Path of the Handler which this method will determine</param> /// <returns></returns> protected override BaseProtocolHandlerConfiguration LoadConfig(HttpContext context, out String basePath) { // Check the Configuration File is specified String configFile = context.Server.MapPath(ConfigurationManager.AppSettings["dotNetRDFConfig"]); if (configFile == null) { throw new DotNetRdfConfigurationException("Unable to load Wildcard Protocol Handler Configuration as the Web.Config file does not specify a 'dotNetRDFConfig' AppSetting to specify the RDF configuration file to use"); } IGraph g = WebConfigurationLoader.LoadConfigurationGraph(context, configFile); // Then check there is configuration associated with the expected URI INode objNode = WebConfigurationLoader.FindObject(g, context.Request.Url, out basePath); if (objNode == null) { throw new DotNetRdfConfigurationException("Unable to load Wildcard Protocol Handler Configuration as the RDF configuration file does not have any configuration associated with an appropriate wildcard URI"); } this._basePath = basePath; // Is our Configuration already cached? Object temp = context.Cache[this._basePath]; if (temp != null) { if (temp is BaseProtocolHandlerConfiguration) { return((BaseProtocolHandlerConfiguration)temp); } else { context.Cache.Remove(this._basePath); } } ProtocolHandlerConfiguration config = new ProtocolHandlerConfiguration(new WebContext(context), g, objNode); // Finally cache the Configuration before returning it if (config.CacheSliding) { context.Cache.Add(this._basePath, config, new System.Web.Caching.CacheDependency(configFile), System.Web.Caching.Cache.NoAbsoluteExpiration, new TimeSpan(0, config.CacheDuration, 0), System.Web.Caching.CacheItemPriority.Normal, null); } else { context.Cache.Add(this._basePath, config, new System.Web.Caching.CacheDependency(configFile), DateTime.Now.AddMinutes(config.CacheDuration), System.Web.Caching.Cache.NoSlidingExpiration, System.Web.Caching.CacheItemPriority.Normal, null); } return(config); }