internal static void SaveResultsAndClearLucenePool(string luceneIndex)
{
ReadWriteLock.TryEnterWriteLock(IndexConstants.ReadWriteLockTimeOutMilliseconds);
try
{
if (IndexReaderPool.TryRemove(luceneIndex, out var indexReader))
{
indexReader.Dispose();
}
if (IndexWritesPool.TryRemove(luceneIndex, out var indexWriter))
{
indexWriter.Dispose();
}
IndexSearcherPool.TryRemove(luceneIndex, out _);
IndexGotChanged.AddOrUpdate(luceneIndex, u => 0, (u, v) => 0);
}
finally
{
ReadWriteLock.ExitWriteLock();
}
}
static IndexSearcher CreateOrGetIndexSearcher(string luceneIndex)
{
IndexSearcher indexSearcher;
if (!IndexSearcherPool.TryGetValue(luceneIndex, out indexSearcher) || IndexGotChanged.TryGetValue(luceneIndex, out var indexChangedTimes) && indexChangedTimes > 0)
{
lock (syncLockForSearcher)
{
if (!IndexSearcherPool.TryGetValue(luceneIndex, out indexSearcher))
{
indexSearcher = new IndexSearcher(CreateOrGetIndexReader(luceneIndex, false));
IndexSearcherPool.TryAdd(luceneIndex, indexSearcher);
}
else if (IndexGotChanged.TryGetValue(luceneIndex, out indexChangedTimes) && indexChangedTimes > 0)
{
indexSearcher = new IndexSearcher(CreateOrGetIndexReader(luceneIndex, true));
IndexSearcherPool.AddOrUpdate(luceneIndex, indexSearcher, (u, v) => indexSearcher);
IndexGotChanged.AddOrUpdate(luceneIndex, 0, (u, v) => 0);
}
}
}
if (!indexSearcher.IndexReader.TryIncRef())
{
return(CreateOrGetIndexSearcher(luceneIndex));
}
return(indexSearcher);
}
internal static void UpdateIndex(string luceneIndex, Term term, Document document)
{
try
{
readWriteLock.TryEnterReadLock(Constants.ReadWriteLockTimeOutMilliseconds);
var indexWriter = CreateOrGetIndexWriter(luceneIndex);
indexWriter.UpdateDocument(term, document);
IndexGotChanged.AddOrUpdate(luceneIndex, u => 0, (u, v) => v + 1);
}
finally
{
readWriteLock.ExitReadLock();
}
}
internal static void DeleteIndex(string luceneIndex, params Query[] searchQueries)
{
try
{
readWriteLock.TryEnterReadLock(Constants.ReadWriteLockTimeOutMilliseconds);
var indexWriter = CreateOrGetIndexWriter(luceneIndex);
indexWriter.DeleteDocuments(searchQueries);
IndexGotChanged.AddOrUpdate(luceneIndex, u => 0, (u, v) => v + 1);
}
finally
{
readWriteLock.ExitReadLock();
}
}
internal static void DeleteAllIndex(string luceneIndex)
{
try
{
readWriteLock.TryEnterReadLock(Constants.ReadWriteLockTimeOutMilliseconds);
var indexWriter = CreateOrGetIndexWriter(luceneIndex);
indexWriter.DeleteAll();
indexWriter.Commit();
IndexGotChanged.AddOrUpdate(luceneIndex, u => 0, (u, v) => v + 1);
}
finally
{
readWriteLock.ExitReadLock();
}
}
internal static void BuildIndex(string luceneIndex, bool triggerMerge, bool applyAllDeletes, IEnumerable <Document> documents, bool needFlush)
{
try
{
readWriteLock.TryEnterReadLock(Constants.ReadWriteLockTimeOutMilliseconds);
var writer = CreateOrGetIndexWriter(luceneIndex);
writer.AddDocuments(documents);
if (needFlush)
{
writer.Flush(triggerMerge, applyAllDeletes);
}
IndexGotChanged.AddOrUpdate(luceneIndex, u => 0, (u, v) => v + 1);
}
finally
{
readWriteLock.ExitReadLock();
}
}
