org.hibernate.search.indexes.impl

Class NRTIndexManager

java.lang.Object

org.hibernate.search.indexes.spi.DirectoryBasedIndexManager

org.hibernate.search.indexes.impl.NRTIndexManager

All Implemented Interfaces:

IndexManager

public class NRTIndexManager
extends DirectoryBasedIndexManager

IndexManager implementation taking advantage of the Near-Real-Time features of Lucene. When using this work mode the IndexWriter does not need a full flush at the end of each operation: new IndexReaders are able to inspect the unflushed changes still pending in the IndexWriter buffers. This improves write performance as the IndexWriter doesn't need to commit as often, but has two limitations:

• unsaved index data might be lost in case of crashes
• is not useful for non-local (clustered) backends

Since:

4.0

Author:

Sanne Grinovero (C) 2011 Red Hat Inc.

Constructor Summary

Constructors

Constructor and Description
NRTIndexManager()

Method Summary

Modifier and Type	Method and Description
protected DirectoryBasedReaderProvider	createIndexReader(String indexName, Properties cfg, WorkerBuildContext buildContext)
protected WorkspaceHolder	createWorkspaceHolder(String indexName, Properties cfg, WorkerBuildContext buildContext)

Methods inherited from class org.hibernate.search.indexes.spi.DirectoryBasedIndexManager

addContainedEntity, awaitAsyncProcessingCompletion, createDirectoryProvider, destroy, flushAndReleaseResources, getAnalyzer, getContainedTypes, getDirectoryModificationLock, getDirectoryProvider, getIndexBinding, getIndexingParameters, getIndexManagerType, getIndexName, getOptimizerStrategy, getReaderProvider, getSerializer, getSimilarity, getWorkspaceHolder, initialize, optimize, performOperations, performStreamOperation, setSearchFactory, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

NRTIndexManager

public NRTIndexManager()

Method Detail

createWorkspaceHolder

protected WorkspaceHolder createWorkspaceHolder(String indexName,
                                                Properties cfg,
                                                WorkerBuildContext buildContext)

Overrides:

createWorkspaceHolder in class DirectoryBasedIndexManager

createIndexReader

protected DirectoryBasedReaderProvider createIndexReader(String indexName,
                                                         Properties cfg,
                                                         WorkerBuildContext buildContext)

Overrides:

createIndexReader in class DirectoryBasedIndexManager