Class ReaderManager

Utility class to safely share DirectoryReader instances across multiple threads, while periodically reopening. This class ensures each reader is disposed only once all threads have finished using it.

This is a Lucene.NET EXPERIMENTAL API, use at your own risk
Inheritance
System.Object
ReferenceManager<DirectoryReader>
ReaderManager
Inherited Members
Namespace: Lucene.Net.Index
Assembly: Lucene.Net.dll
Syntax
public sealed class ReaderManager : ReferenceManager<DirectoryReader>

Constructors

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ReaderManager(IndexWriter, Boolean)

Creates and returns a new ReaderManager from the given IndexWriter.

Declaration
public ReaderManager(IndexWriter writer, bool applyAllDeletes)
Parameters
Type Name Description
IndexWriter writer

the IndexWriter to open the IndexReader from.

System.Boolean applyAllDeletes

If true, all buffered deletes will be applied (made visible) in the IndexSearcher / DirectoryReader. If false, the deletes may or may not be applied, but remain buffered (in IndexWriter) so that they will be applied in the future. Applying deletes can be costly, so if your app can tolerate deleted documents being returned you might gain some performance by passing false. See OpenIfChanged(DirectoryReader, IndexWriter, Boolean).
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ReaderManager(Directory)

Creates and returns a new ReaderManager from the given Directory.

Declaration
public ReaderManager(Directory dir)
Parameters
Type Name Description
Directory dir

the directory to open the DirectoryReader on.

Methods

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DecRef(DirectoryReader)

Declaration
protected override void DecRef(DirectoryReader reference)
Parameters
Type Name Description
DirectoryReader reference
Overrides
Lucene.Net.Search.ReferenceManager<Lucene.Net.Index.DirectoryReader>.DecRef(Lucene.Net.Index.DirectoryReader)
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GetRefCount(DirectoryReader)

Declaration
protected override int GetRefCount(DirectoryReader reference)
Parameters
Type Name Description
DirectoryReader reference
Returns
Type Description
System.Int32
Overrides
Lucene.Net.Search.ReferenceManager<Lucene.Net.Index.DirectoryReader>.GetRefCount(Lucene.Net.Index.DirectoryReader)
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RefreshIfNeeded(DirectoryReader)

Declaration
protected override DirectoryReader RefreshIfNeeded(DirectoryReader referenceToRefresh)
Parameters
Type Name Description
DirectoryReader referenceToRefresh
Returns
Type Description
DirectoryReader
Overrides
Lucene.Net.Search.ReferenceManager<Lucene.Net.Index.DirectoryReader>.RefreshIfNeeded(Lucene.Net.Index.DirectoryReader)
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TryIncRef(DirectoryReader)

Declaration
protected override bool TryIncRef(DirectoryReader reference)
Parameters
Type Name Description
DirectoryReader reference
Returns
Type Description
System.Boolean
Overrides
Lucene.Net.Search.ReferenceManager<Lucene.Net.Index.DirectoryReader>.TryIncRef(Lucene.Net.Index.DirectoryReader)

Extension Methods

See Also