/// <summary>
/// Searches the index.
/// </summary>
/// <param name="queryText"></param>
/// <param name="keywordFilter">A Hashtable where the key is the fieldname of the keyword and
/// the value the keyword itself.</param>
/// <param name="pageIndex"></param>
/// <param name="pageSize"></param>
/// <returns></returns>
public SearchResultCollection Find(string queryText, Hashtable keywordFilter, int pageIndex, int pageSize)
{
long startTicks = DateTime.Now.Ticks;
Hits hits;
try
{
Query query = MultiFieldQueryParser.Parse(queryText, new string[] {"title", "contents"}, new StandardAnalyzer());
IndexSearcher searcher = new IndexSearcher(this._indexDirectory);
if (keywordFilter != null && keywordFilter.Count > 0)
{
QueryFilter qf = BuildQueryFilterFromKeywordFilter(keywordFilter);
hits = searcher.Search(query, qf);
}
else
{
hits = searcher.Search(query);
}
int start = pageIndex*pageSize;
int end = (pageIndex + 1)*pageSize;
if (hits.Length() <= end)
{
end = hits.Length();
}
SearchResultCollection results = new SearchResultCollection();
results.TotalCount = hits.Length();
results.PageIndex = pageIndex;
for (int i = start; i < end; i++)
{
SearchResult result = new SearchResult();
result.Title = hits.Doc(i).Get("title");
result.Summary = hits.Doc(i).Get("summary");
result.Author = hits.Doc(i).Get("author");
result.ModuleType = hits.Doc(i).Get("moduletype");
result.Path = hits.Doc(i).Get("path");
result.Category = hits.Doc(i).Get("category");
result.DateCreated = DateTime.Parse((hits.Doc(i).Get("datecreated")));
result.Score = hits.Score(i);
result.Boost = hits.Doc(i).GetBoost();
result.SectionId = Int32.Parse(hits.Doc(i).Get("sectionid"));
results.Add(result);
}
searcher.Close();
results.ExecutionTime = DateTime.Now.Ticks - startTicks;
return results;
}
catch (Exception ex)
{
throw new SearchException("Error while performing full-text search.", ex);
}
}
/// <summary>
/// A searchresult contains a SectionId propery that indicates to which section the
/// result belongs. We need to get a real Section to determine if the current user
/// has view access to that Section.
/// </summary>
/// <param name="nonFilteredResults"></param>
/// <returns></returns>
private SearchResultCollection FilterResults(SearchResultCollection nonFilteredResults)
{
long filterStartTicks = DateTime.Now.Ticks;
SearchResultCollection filteredResults = new SearchResultCollection();
CoreRepository cr = HttpContext.Current.Items["CoreRepository"] as CoreRepository;
if (cr != null)
{
foreach (SearchResult result in nonFilteredResults)
{
Section section = (Section)cr.GetObjectById(typeof(Section), result.SectionId);
if (section.ViewAllowed(HttpContext.Current.User.Identity))
{
filteredResults.Add(result);
}
}
}
filteredResults.ExecutionTime = DateTime.Now.Ticks - filterStartTicks + nonFilteredResults.ExecutionTime;
return filteredResults;
}
