/// <summary>
/// ALL processing happens here, since we are not using ASP.NET controls or events.
/// Page_Load will:
/// * check the Cache for a catalog to use
/// * if not, check the filesystem for a serialized cache
/// * and if STILL not, Server.Transfer to the Spider to build a new cache
/// * check the QueryString for search arguments (and if so, do a search)
/// * otherwise just show the HTML of this page - a blank search form
/// </summary>
public void Page_Load()
{
// prevent Searcharoo from indexing itself (ie. it's own results page)
if ((Request.UserAgent != null) && (Request.UserAgent.ToLower().IndexOf("searcharoo") > 0)) { Response.Clear(); Response.End(); return; }
bool getCatalog = false;
try
{
// see if there is a catalog object in the cache
_Catalog = (Catalog)Application["Searcharoo_Catalog"];
// if so, get the _WordCount
_WordCount = _Catalog.Length;
_Cache = (Searcharoo.Common.Cache)Application["Searcharoo_Cache"];
}
catch (Exception ex)
{
// otherwise, we'll need to build the catalog
log.Warn("Catalog object unavailable : building a new one!");
_Catalog = null; // in case
_Cache = null;
}
ucSearchPanelHeader.WordCount = _WordCount;
//ucSearchPanelFooter.WordCount = _WordCount;
if (_Catalog == null)
{
getCatalog = true;
}
else if (_Catalog.Length == 0)
{
getCatalog = true;
}
if (getCatalog)
{
// Create the thread object, passing in the Alpha.Beta method
// via a ThreadStart delegate. This does not start the thread.
SearchCatalogInit sci = new SearchCatalogInit();
Thread t = new Thread(() => sci.GetCatalog(this));
t.Start();
if ((string)Application["CatalogLoad"] == "")
{
// Still no Catalog, so we have to start building a new one
if (_Catalog == null)
{
_Catalog = (Catalog)Application["Searcharoo_Catalog"];
_Cache = (Searcharoo.Common.Cache)Application["Searcharoo_Cache"];
}
}
}
if (this.SearchQuery == "")
{
ucSearchPanelHeader.IsSearchResultsPage = false;
}
else
{
//refactored into class - catalog can be build via a console application as well as the SearchSpider.aspx page
Searcharoo.Engine.Search se = new Searcharoo.Engine.Search();
SortedList output = this.GetSearchResults(se); // se.GetResults(this.SearchQuery, _Catalog);
_NumberOfMatches = output.Count.ToString();
if (output.Count > 0)
{
_PagedResults.DataSource = output.GetValueList();
_PagedResults.AllowPaging = true;
_PagedResults.PageSize = MaxResultsPerPage; //;Preferences.ResultsPerPage; //10;
_PagedResults.CurrentPageIndex = Request.QueryString["page"] == null ? 0 : Convert.ToInt32(Request.QueryString["page"]) - 1;
_Matches = se.SearchQueryMatchHtml;
_DisplayTime = se.DisplayTime;
_Geocoded = se.GeocodedMatches;
SearchResults.DataSource = _PagedResults;
SearchResults.DataBind();
}
else
{
lblNoSearchResults.Visible = true;
}
// Set the display info in the top & bottom user controls
ucSearchPanelHeader.Word = this.SearchQuery;
ucSearchPanelHeader.IsSearchResultsPage = true;
}
}
public void GetCatalog(Page pg)
{
if ((string)pg.Application["CatalogLoad"] == "")
{
pg.Application.Lock();
pg.Application["CatalogLoad"] = "Loading catalog in progress...";
pg.Application.UnLock();
log.Info("Loading catolog in progress...");
// No catalog 'in memory', so let's look for one
// First, for a serialized version on disk
try
{
_Catalog = Catalog.Load(); // returns null if not found
}
catch (Exception ex)
{
log.Error("Loading catalog error", ex);
}
pg.Application.Lock();
pg.Application["CatalogLoad"] = "Loading cache catalog in progress...";
pg.Application.UnLock();
log.Info("Loading cache catolog in progress...");
try
{
_Cache = Searcharoo.Common.Cache.Load();
_Catalog.FileCache = _Cache;
}
catch (Exception ex)
{
log.Error("Loading cache catalog error", ex);
}
// Still no Catalog, so we have to start building a new one
if (_Catalog == null)
{
_Catalog = (Catalog)pg.Application["Searcharoo_Catalog"];
_Cache = (Searcharoo.Common.Cache)pg.Application["Searcharoo_Cache"];
if (_Catalog != null)
{
log.Info("Catalog retrieved from Cache[] " + _Catalog.Words);
}
}
else
{
// Yep, there was a serialized catalog file
// Don't forget to add to cache for next time (the Spider does this too)
pg.Application.Lock();
pg.Application["Searcharoo_Catalog"] = _Catalog;
pg.Application["Searcharoo_Cache"] = _Cache;
pg.Application.UnLock();
if (_Catalog != null)
{
log.Info("Deserialized catalog and put in Cache[] " + _Catalog.Words);
}
}
pg.Application.Lock();
pg.Application["CatalogLoad"] = "";
pg.Application.UnLock();
}
}
