/// <summary>
/// Searches the lucene index with the search text.
/// </summary>
/// <param name="searchText">The text to search with.</param>
/// <remarks>Syntax reference: http://lucene.apache.org/java/2_3_2/queryparsersyntax.html#Wildcard</remarks>
/// <exception cref="SearchException">An error occured searching the lucene.net index.</exception>
public virtual IEnumerable <SearchResultViewModel> Search(string searchText)
{
// This check is for the benefit of the CI builds
if (!Directory.Exists(IndexPath))
{
CreateIndex();
}
List <SearchResultViewModel> list = new List <SearchResultViewModel>();
if (string.IsNullOrWhiteSpace(searchText))
{
return(list);
}
StandardAnalyzer analyzer = new StandardAnalyzer(LUCENEVERSION);
MultiFieldQueryParser parser = new MultiFieldQueryParser(LuceneVersion.LUCENE_29, new string[] { "content", "title" }, analyzer);
Query query = null;
try
{
query = parser.Parse(searchText);
}
catch (Lucene.Net.QueryParsers.ParseException)
{
// Catch syntax errors in the search and remove them.
searchText = QueryParser.Escape(searchText);
query = parser.Parse(searchText);
}
if (query != null)
{
try
{
using (IndexSearcher searcher = new IndexSearcher(FSDirectory.Open(new DirectoryInfo(IndexPath)), true))
{
TopDocs topDocs = searcher.Search(query, 1000);
foreach (ScoreDoc scoreDoc in topDocs.ScoreDocs)
{
Document document = searcher.Doc(scoreDoc.Doc);
list.Add(new SearchResultViewModel(document, scoreDoc));
}
}
}
catch (FileNotFoundException)
{
// For 1.7's change to the Lucene search path.
CreateIndex();
}
catch (Exception ex)
{
throw new SearchException(ex, "An error occured while searching the index, try rebuilding the search index via the admin tools to fix this.");
}
}
if (!_context.IsAdmin)
{
List <int> toBeRemove = new List <int>();
foreach (var page in list)
{
bool restrict_page = false;
bool user_have_access = false;
foreach (var tag1 in page.Tags.Split(' '))
{
if (tag1.StartsWith("#"))
{
restrict_page = true;
Database.User user = _UserService.GetUserById(new Guid(_context.CurrentUser));
foreach (var permission in user.Permission.Split(','))
{
if (permission.ToLower() == tag1.Replace("#", "").ToLower())
{
user_have_access = true;
break;
}
}
/*
* if (tag1.Replace("#", "").ToLower() == _context.CurrentUsername.ToLower())
* {
* user_have_access = true;
* }
*/
}
}
if (restrict_page && !user_have_access)
{
toBeRemove.Add(page.Id);
}
}
foreach (int i in toBeRemove)
{
list = list.Where(p => p.Id != i).ToList();
}
}
return(list);
}
/// <summary>
/// Finds all pages with the given tag.
/// </summary>
/// <param name="tag">The tag to search for.</param>
/// <returns>A <see cref="IEnumerable{PageViewModel}"/> of pages tagged with the provided tag.</returns>
/// <exception cref="DatabaseException">An database error occurred while getting the list.</exception>
public IEnumerable <PageViewModel> FindByTag(string tag)
{
try
{
string cacheKey = string.Format("pagesbytag.{0}", tag);
IEnumerable <PageViewModel> models = _listCache.Get <PageViewModel>(cacheKey);
// if (models == null)
//do not use cache here, so admin setting user permission will become effective immediately
{
IEnumerable <Page> pages = Repository.FindPagesContainingTag(tag).OrderBy(p => p.Title);
if (!_context.IsAdmin)
{
List <int> toBeRemove = new List <int>();
foreach (var page in pages)
{
bool restrict_page = false;
bool user_have_access = false;
foreach (var tag1 in page.Tags.Split(','))
{
if (tag1.StartsWith("#"))
{
restrict_page = true;
Database.User user = _UserService.GetUserById(new Guid(_context.CurrentUser));
foreach (var permission in user.Permission.Split(','))
{
if (permission.ToLower() == tag1.Replace("#", "").ToLower())
{
user_have_access = true;
break;
}
}
}
}
if (restrict_page && !user_have_access)
{
toBeRemove.Add(page.Id);
}
}
foreach (int i in toBeRemove)
{
pages = pages.Where(p => p.Id != i);
}
}
models = from page in pages
select new PageViewModel(Repository.GetLatestPageContent(page.Id), _markupConverter);
_listCache.Add <PageViewModel>(cacheKey, models);
}
return(models);
}
catch (DatabaseException ex)
{
throw new DatabaseException(ex, "An error occurred finding the tag '{0}' in the database", tag);
}
}