/// <summary>
///
/// </summary>
/// <param name="searchResult"></param>
public void Add(SearchResult searchResult)
{
this.List.Add(searchResult);
}
/// <summary>
///
/// </summary>
/// <param name="searchResult"></param>
public void Remove(SearchResult searchResult)
{
this.List.Remove(searchResult);
}
/// <summary>
/// Searches the index.
/// </summary>
/// <param name="queryText"></param>
/// <param name="categoryNames"></param>
/// <param name="pageIndex"></param>
/// <param name="pageSize"></param>
/// <param name="roleIds"></param>
/// <returns></returns>
public SearchResultCollection Find(string queryText, IList<string> categoryNames, int pageIndex, int pageSize, IEnumerable<int> roleIds)
{
long startTicks = DateTime.Now.Ticks;
log.Debug("IndexQuery.Find: start");
log.DebugFormat("IndexQuery.Find: queryText = \"{0}\", pageIndex = {1}, pageSize = {2}", queryText, pageIndex, pageSize);
// the overall-query
BooleanQuery query = new BooleanQuery();
// add our parsed query
if (!String.IsNullOrEmpty(queryText))
{
Query multiQuery = MultiFieldQueryParser.Parse(new[] { queryText, queryText, queryText, queryText, queryText }, new[] { "title", "summary", "contents", "tag", "category" }, new StandardAnalyzer());
query.Add(multiQuery, BooleanClause.Occur.MUST);
}
// TODO: for now this is commented
// add the security constraint - must be satisfied
//query.Add(this.BuildSecurityQuery(roleIds), BooleanClause.Occur.MUST);
// Add the category query (if available)
if (categoryNames != null)
{
query.Add(this.BuildCategoryQuery(categoryNames), BooleanClause.Occur.MUST);
}
IndexSearcher searcher = new IndexSearcher(this._indexDirectory);
Hits hits = searcher.Search(query, new Sort("datepublished", true));
log.DebugFormat("IndexQuery.Find: hits.Length() = {0}", hits.Length());
int start = (pageIndex - 1) * pageSize;
int end = (pageIndex) * pageSize;
if (hits.Length() <= end)
{
end = hits.Length();
}
log.DebugFormat("IndexQuery.Find: start = {0}, end = {1}", start, end);
SearchResultCollection results = new SearchResultCollection(end);
results.TotalCount = hits.Length();
results.PageIndex = pageIndex;
for (int i = start; i < end; i++)
{
string[] categories = hits.Doc(i).GetValues("category");
string[] tags = hits.Doc(i).GetValues("tag");
SearchResult result = new SearchResult()
{
Title = hits.Doc(i).Get("title"),
Summary = hits.Doc(i).Get("summary"),
Author = hits.Doc(i).Get("author"),
Path = hits.Doc(i).Get("path"),
Category = categories != null ? String.Join(", ", categories) : String.Empty,
Tag = tags != null ? String.Join(", ", tags) : String.Empty,
DatePublished = DateTime.Parse((hits.Doc(i).Get("datepublished"))),
Score = hits.Score(i),
Boost = hits.Doc(i).GetBoost(),
ContentItemId = Int32.Parse(hits.Doc(i).Get("contentitemid"))
};
results.Add(result);
}
searcher.Close();
results.ExecutionTime = DateTime.Now.Ticks - startTicks;
log.Debug("IndexQuery.Find: end");
return results;
}
