public void Dispose()
{
if (_disposed)
{
throw new ObjectDisposedException(nameof(Index));
}
_disposed = true;
DisposeWriters();
_indexSearcherHolder?.Dispose();
_converter?.Dispose();
_directory?.Dispose();
foreach (var directory in _suggestionsDirectories)
{
directory.Value?.Dispose();
}
}
public LuceneIndexPersistence(Index index)
{
_index = index;
_logger = LoggingSource.Instance.GetLogger <LuceneIndexPersistence>(index.DocumentDatabase.Name);
_suggestionsDirectories = new Dictionary <string, LuceneVoronDirectory>();
_suggestionsIndexSearcherHolders = new Dictionary <string, IndexSearcherHolder>();
_disposeOnce = new DisposeOnce <SingleAttempt>(() =>
{
DisposeWriters();
_lastReader?.Dispose();
_indexSearcherHolder?.Dispose();
_converter?.Dispose();
_directory?.Dispose();
foreach (var directory in _suggestionsDirectories)
{
directory.Value?.Dispose();
}
});
var fields = index.Definition.IndexFields.Values;
switch (_index.Type)
{
case IndexType.AutoMap:
_converter = new LuceneDocumentConverter(fields);
break;
case IndexType.AutoMapReduce:
_converter = new LuceneDocumentConverter(fields, reduceOutput: true);
break;
case IndexType.MapReduce:
_converter = new AnonymousLuceneDocumentConverter(fields, _index.IsMultiMap, reduceOutput: true);
break;
case IndexType.Map:
_converter = new AnonymousLuceneDocumentConverter(fields, _index.IsMultiMap);
break;
case IndexType.JavaScriptMap:
_converter = new JintLuceneDocumentConverter(fields);
break;
case IndexType.JavaScriptMapReduce:
_converter = new JintLuceneDocumentConverter(fields, reduceOutput: true);
break;
case IndexType.Faulty:
_converter = null;
break;
default:
throw new NotSupportedException(_index.Type.ToString());
}
_fields = fields.ToDictionary(x => x.Name, x => x);
_indexSearcherHolder = new IndexSearcherHolder(CreateIndexSearcher, _index._indexStorage.DocumentDatabase);
foreach (var field in _fields)
{
if (!field.Value.HasSuggestions)
{
continue;
}
string fieldName = field.Key;
_suggestionsIndexSearcherHolders[fieldName] = new IndexSearcherHolder(state => new IndexSearcher(_suggestionsDirectories[fieldName], true, state), _index._indexStorage.DocumentDatabase);
}
IndexSearcher CreateIndexSearcher(IState state)
{
lock (this)
{
var reader = _lastReader;
if (reader != null)
{
if (reader.RefCount <= 0)
{
reader = null;
}
else
{
try
{
var newReader = reader.Reopen(state);
if (newReader != reader)
{
reader.DecRef(state);
}
reader = _lastReader = newReader;
}
catch (Exception e)
{
if (_logger.IsInfoEnabled)
{
_logger.Info($"Could not reopen the index reader for index '{_index.Name}'.", e);
}
// fallback strategy in case of a reader to be closed
// before Reopen and DecRef are executed
reader = null;
}
}
}
if (reader == null)
{
reader = _lastReader = IndexReader.Open(_directory, readOnly: true, state);
}
reader.IncRef();
return(new IndexSearcher(reader));
}
}
}
public LuceneIndexPersistence(Index index)
{
_index = index;
_suggestionsDirectories = new Dictionary <string, LuceneVoronDirectory>();
_suggestionsIndexSearcherHolders = new Dictionary <string, IndexSearcherHolder>();
_disposeOnce = new DisposeOnce <SingleAttempt>(() =>
{
DisposeWriters();
_indexSearcherHolder?.Dispose();
_converter?.Dispose();
_directory?.Dispose();
foreach (var directory in _suggestionsDirectories)
{
directory.Value?.Dispose();
}
});
var fields = index.Definition.IndexFields.Values;
switch (_index.Type)
{
case IndexType.AutoMap:
_converter = new LuceneDocumentConverter(fields);
break;
case IndexType.AutoMapReduce:
_converter = new LuceneDocumentConverter(fields, reduceOutput: true);
break;
case IndexType.MapReduce:
_converter = new AnonymousLuceneDocumentConverter(fields, _index.IsMultiMap, reduceOutput: true);
break;
case IndexType.Map:
_converter = new AnonymousLuceneDocumentConverter(fields, _index.IsMultiMap);
break;
case IndexType.Faulty:
_converter = null;
break;
default:
throw new NotSupportedException(_index.Type.ToString());
}
_fields = fields.ToDictionary(x => x.Name, x => x);
_indexSearcherHolder = new IndexSearcherHolder(state => new IndexSearcher(_directory, true, state), _index._indexStorage.DocumentDatabase);
foreach (var field in _fields)
{
if (!field.Value.HasSuggestions)
{
continue;
}
string fieldName = field.Key;
_suggestionsIndexSearcherHolders[fieldName] = new IndexSearcherHolder(state => new IndexSearcher(_suggestionsDirectories[fieldName], true, state), _index._indexStorage.DocumentDatabase);
}
}