public void ClearAllObjects()
{
Initialize();
Updating.SafeInvoke(this);
lock (_lockObject)
{
using (var analyzer = new StandardAnalyzer(LuceneDefaults.Version))
{
using (var writer = new IndexWriter(_indexDirectory, analyzer, IndexWriter.MaxFieldLength.UNLIMITED))
{
_indexedObjects.Clear();
_searchableMetadata.Clear();
writer.DeleteAll();
writer.Optimize();
writer.Commit();
}
}
}
Updated.SafeInvoke(this);
}
public virtual void AddObjects(IEnumerable <ISearchable> searchables)
{
Initialize();
Updating.SafeInvoke(this);
lock (_lockObject)
{
using (var analyzer = new StandardAnalyzer(LuceneDefaults.Version))
{
using (var writer = new IndexWriter(_indexDirectory, analyzer, IndexWriter.MaxFieldLength.UNLIMITED))
{
foreach (var searchable in searchables)
{
var index = _currentIndex++;
_indexedObjects.Add(index, searchable);
_searchableIndexes.Add(searchable, index);
var document = new Document();
document.Add(new Field(IndexId, index.ToString(), Field.Store.YES, Field.Index.NOT_ANALYZED));
var metadata = searchable.MetadataCollection;
var searchableMetadatas = metadata.All.OfType <ISearchableMetadata>();
foreach (var searchableMetadata in searchableMetadatas)
{
var searchableMetadataValue = searchableMetadata.GetValue(searchable.Instance);
var searchableMetadataValueAsString = ObjectToStringHelper.ToString(searchableMetadataValue);
var field = new Field(searchableMetadata.SearchName, searchableMetadataValueAsString, Field.Store.YES, searchableMetadata.Analyze ? Field.Index.ANALYZED : Field.Index.NOT_ANALYZED, Field.TermVector.NO);
document.Add(field);
if (!_searchableMetadata.ContainsKey(searchableMetadata.SearchName))
{
_searchableMetadata.Add(searchableMetadata.SearchName, searchableMetadata);
}
}
writer.AddDocument(document);
}
writer.Optimize();
writer.Commit();
}
}
}
Updated.SafeInvoke(this);
}
public virtual void RemoveObjects(IEnumerable <ISearchable> searchables)
{
Initialize();
lock (_lockObject)
{
Updating.SafeInvoke(this);
using (var analyzer = new StandardAnalyzer(LuceneDefaults.Version))
{
using (var writer = new IndexWriter(_indexDirectory, analyzer, IndexWriter.MaxFieldLength.UNLIMITED))
{
foreach (var searchable in searchables)
{
int index;
if (!_searchableIndexes.TryGetValue(searchable, out index))
{
continue;
}
var queryAsText = $"{IndexId}:{index}";
var parser = new QueryParser(LuceneDefaults.Version, string.Empty, analyzer);
var query = parser.Parse(queryAsText);
writer.DeleteDocuments(query);
_searchableIndexes.Remove(searchable);
_indexedObjects.Remove(index);
}
writer.Optimize();
writer.Commit();
}
}
Updated.SafeInvoke(this);
}
}
