public int FindChangedAndIndex()
{
var lastDateTimeFile = Path.Combine(path, "last.time");
var lastDateTime = DateTime.MinValue;
try
{
if (File.Exists(lastDateTimeFile))
{
lastDateTime = DateTime.Parse(File.ReadAllText(lastDateTimeFile)).ToUniversalTime();
}
}
catch (FormatException) { }
catch (ArgumentNullException) { }
var copyLastDateTime = lastDateTime;
lastDateTime = DateTime.UtcNow;
var texts = SelectTextsForIndex(copyLastDateTime, true);
if (0 < texts.Count)
{
var directory = GetOrCreateDirectory(path);
var analyzer = new AnalyzersProvider().GetAnalyzer(tenant.GetCulture().TwoLetterISOLanguageName);
var create = directory.ListAll().Length == 0;
var index = new IndexWriter(directory, analyzer, create, IndexWriter.MaxFieldLength.UNLIMITED);
try
{
foreach (var t in texts)
{
var term = new Term("Id", t.Item1);
if (string.IsNullOrEmpty(t.Item2))
{
index.DeleteDocuments(term);
}
else
{
var doc = new Document();
doc.Add(new Field("Id", t.Item1, Field.Store.YES, Field.Index.NOT_ANALYZED, Field.TermVector.YES));
doc.Add(new Field("Text", t.Item2, Field.Store.YES, Field.Index.ANALYZED, Field.TermVector.NO));
index.UpdateDocument(term, doc);
}
}
}
finally
{
index.Optimize();
index.Commit();
index.Close();
}
File.WriteAllText(lastDateTimeFile, lastDateTime.ToString("o"));
}
return(texts.Count);
}
public int FindChangedAndIndex()
{
var lastDateTimeFile = Path.Combine(path, "last.time");
var lastDateTime = DateTime.MinValue;
try
{
if (File.Exists(lastDateTimeFile))
{
lastDateTime = DateTime.Parse(File.ReadAllText(lastDateTimeFile)).ToUniversalTime();
}
}
catch (FormatException) { }
catch (ArgumentNullException) { }
var copyLastDateTime = lastDateTime;
lastDateTime = DateTime.UtcNow;
var texts = SelectTextsForIndex(copyLastDateTime, true);
if (0 < texts.Count)
{
var directory = GetOrCreateDirectory(path);
var analyzer = new AnalyzersProvider().GetAnalyzer(tenant.GetCulture().TwoLetterISOLanguageName);
var create = directory.ListAll().Length == 0;
var index = new IndexWriter(directory, analyzer, create, IndexWriter.MaxFieldLength.UNLIMITED);
try
{
foreach (var t in texts)
{
var term = new Term("Id", t.Item1);
if (string.IsNullOrEmpty(t.Item2))
{
index.DeleteDocuments(term);
}
else
{
var doc = new Document();
doc.Add(new Field("Id", t.Item1, Field.Store.YES, Field.Index.NOT_ANALYZED, Field.TermVector.YES));
doc.Add(new Field("Text", t.Item2, Field.Store.YES, Field.Index.ANALYZED, Field.TermVector.NO));
index.UpdateDocument(term, doc);
}
}
}
finally
{
index.Optimize();
index.Commit();
index.Close();
}
File.WriteAllText(lastDateTimeFile, lastDateTime.ToString("o"));
}
return texts.Count;
}
public TextSearchResult Search(string query, Tenant tenant)
{
var result = new TextSearchResult(module);
if (string.IsNullOrEmpty(query) || !Directory.Exists(path))
{
return(result);
}
var dir = Lucene.Net.Store.FSDirectory.Open(new DirectoryInfo(path));
var searcher = new IndexSearcher(dir, false);
try
{
var analyzer = new AnalyzersProvider().GetAnalyzer(tenant.GetCulture().TwoLetterISOLanguageName);
var parser = new QueryParser(Lucene.Net.Util.Version.LUCENE_29, "Text", analyzer);
parser.SetDefaultOperator(QueryParser.Operator.AND);
if (TextIndexCfg.MaxQueryLength < query.Length)
{
query = query.Substring(0, TextIndexCfg.MaxQueryLength);
}
Query q = null;
try
{
q = parser.Parse(query);
}
catch (Lucene.Net.QueryParsers.ParseException) { }
if (q == null)
{
q = parser.Parse(QueryParser.Escape(query));
}
#pragma warning disable 618
var hits = searcher.Search(q);
#pragma warning restore 618
for (int i = 0; i < hits.Length(); i++)
{
var doc = hits.Doc(i);
result.AddIdentifier(doc.Get("Id"));
}
}
finally
{
searcher.Close();
dir.Close();
}
return(result);
}
public TextSearchResult Search(string query, Tenant tenant)
{
var result = new TextSearchResult(module);
if (string.IsNullOrEmpty(query) || !Directory.Exists(path))
{
return result;
}
var dir = Lucene.Net.Store.FSDirectory.Open(new DirectoryInfo(path));
var searcher = new IndexSearcher(dir, false);
try
{
var analyzer = new AnalyzersProvider().GetAnalyzer(tenant.GetCulture().TwoLetterISOLanguageName);
var parser = new QueryParser(Lucene.Net.Util.Version.LUCENE_29, "Text", analyzer);
parser.SetDefaultOperator(QueryParser.Operator.AND);
if (TextIndexCfg.MaxQueryLength < query.Length)
{
query = query.Substring(0, TextIndexCfg.MaxQueryLength);
}
Query q = null;
try
{
q = parser.Parse(query);
}
catch (Lucene.Net.QueryParsers.ParseException) { }
if (q == null)
{
q = parser.Parse(QueryParser.Escape(query));
}
#pragma warning disable 618
var hits = searcher.Search(q);
#pragma warning restore 618
for (int i = 0; i < hits.Length(); i++)
{
var doc = hits.Doc(i);
result.AddIdentifier(doc.Get("Id"));
}
}
finally
{
searcher.Close();
dir.Close();
}
return result;
}
