protected Lucene.Net.Store.Directory OpenOrCreateLuceneDirectory(
IndexDefinition indexDefinition,
string indexName = null,
bool createIfMissing = true)
{
Lucene.Net.Store.Directory directory;
if (indexDefinition.IsTemp || configuration.RunInMemory)
{
directory = new RAMDirectory();
new IndexWriter(directory, dummyAnalyzer, IndexWriter.MaxFieldLength.UNLIMITED).Dispose(); // creating index structure
}
else
{
var indexDirectory = indexName ?? IndexDefinitionStorage.FixupIndexName(indexDefinition.Name, path);
var indexFullPath = Path.Combine(path, MonoHttpUtility.UrlEncode(indexDirectory));
directory = new LuceneCodecDirectory(indexFullPath, documentDatabase.IndexCodecs.OfType <AbstractIndexCodec>());
if (!IndexReader.IndexExists(directory))
{
if (createIfMissing == false)
{
throw new InvalidOperationException("Index does not exists: " + indexDirectory);
}
WriteIndexVersion(directory);
//creating index structure if we need to
new IndexWriter(directory, dummyAnalyzer, IndexWriter.MaxFieldLength.UNLIMITED).Dispose();
}
else
{
EnsureIndexVersionMatches(indexName, directory);
if (directory.FileExists("write.lock")) // force lock release, because it was still open when we shut down
{
IndexWriter.Unlock(directory);
// for some reason, just calling unlock doesn't remove this file
directory.DeleteFile("write.lock");
}
if (directory.FileExists("writing-to-index.lock")) // we had an unclean shutdown
{
if (configuration.ResetIndexOnUncleanShutdown)
{
throw new InvalidOperationException("Rude shutdown detected on: " + indexDirectory);
}
CheckIndexAndRecover(directory, indexDirectory);
directory.DeleteFile("writing-to-index.lock");
}
}
}
return(directory);
}
protected Lucene.Net.Store.Directory OpenOrCreateLuceneDirectory(IndexDefinition indexDefinition, bool createIfMissing = true)
{
Lucene.Net.Store.Directory directory;
if (configuration.RunInMemory ||
(indexDefinition.IsMapReduce == false && // there is no point in creating map/reduce indexes in memory, we write the intermediate results to disk anyway
indexDefinitionStorage.IsNewThisSession(indexDefinition) &&
indexDefinition.DisableInMemoryIndexing == false &&
configuration.DisableInMemoryIndexing == false))
{
directory = new RAMDirectory();
new IndexWriter(directory, dummyAnalyzer, IndexWriter.MaxFieldLength.UNLIMITED).Dispose(); // creating index structure
}
else
{
var indexDirectory = indexDefinition.IndexId.ToString();
var indexFullPath = Path.Combine(path, indexDirectory);
directory = new LuceneCodecDirectory(indexFullPath, documentDatabase.IndexCodecs.OfType<AbstractIndexCodec>());
if (!IndexReader.IndexExists(directory))
{
if (createIfMissing == false)
throw new InvalidOperationException(string.Format("Index directory '{0}' does not exists for '{1}' index.", indexFullPath, indexDefinition.Name));
WriteIndexVersion(directory, indexDefinition);
//creating index structure if we need to
new IndexWriter(directory, dummyAnalyzer, IndexWriter.MaxFieldLength.UNLIMITED).Dispose();
}
else
{
EnsureIndexVersionMatches(directory, indexDefinition);
if (directory.FileExists("write.lock"))// force lock release, because it was still open when we shut down
{
IndexWriter.Unlock(directory);
// for some reason, just calling unlock doesn't remove this file
directory.DeleteFile("write.lock");
}
if (directory.FileExists("writing-to-index.lock")) // we had an unclean shutdown
{
if (configuration.ResetIndexOnUncleanShutdown)
throw new InvalidOperationException(string.Format("Rude shutdown detected on '{0}' index in '{1}' directory.", indexDefinition.Name, indexFullPath));
CheckIndexAndTryToFix(directory, indexDefinition);
directory.DeleteFile("writing-to-index.lock");
}
}
}
return directory;
}
protected Lucene.Net.Store.Directory OpenOrCreateLuceneDirectory(
IndexDefinition indexDefinition,
string indexName = null,
bool createIfMissing = true)
{
Lucene.Net.Store.Directory directory;
if (indexDefinition.IsTemp || configuration.RunInMemory)
{
directory = new RAMDirectory();
new IndexWriter(directory, dummyAnalyzer, IndexWriter.MaxFieldLength.UNLIMITED).Dispose(); // creating index structure
}
else
{
var indexDirectory = indexName ?? IndexDefinitionStorage.FixupIndexName(indexDefinition.Name, path);
var indexFullPath = Path.Combine(path, MonoHttpUtility.UrlEncode(indexDirectory));
directory = new LuceneCodecDirectory(indexFullPath, documentDatabase.IndexCodecs.OfType<AbstractIndexCodec>());
if (!IndexReader.IndexExists(directory))
{
if (createIfMissing == false)
throw new InvalidOperationException("Index does not exists: " + indexDirectory);
WriteIndexVersion(directory);
//creating index structure if we need to
new IndexWriter(directory, dummyAnalyzer, IndexWriter.MaxFieldLength.UNLIMITED).Dispose();
}
else
{
EnsureIndexVersionMatches(indexName, directory);
if (directory.FileExists("write.lock"))// force lock release, because it was still open when we shut down
{
IndexWriter.Unlock(directory);
// for some reason, just calling unlock doesn't remove this file
directory.DeleteFile("write.lock");
}
if (directory.FileExists("writing-to-index.lock")) // we had an unclean shutdown
{
if (configuration.ResetIndexOnUncleanShutdown)
throw new InvalidOperationException("Rude shutdown detected on: " + indexDirectory);
CheckIndexAndRecover(directory, indexDirectory);
directory.DeleteFile("writing-to-index.lock");
}
}
}
return directory;
}
