Package org.hibernate.search.backend.lucene.lowlevel.index.impl

Class IndexAccessorImpl

java.lang.Object

org.hibernate.search.backend.lucene.lowlevel.index.impl.IndexAccessorImpl

All Implemented Interfaces:

AutoCloseable, IndexAccessor

public class IndexAccessorImpl
extends Object
implements AutoCloseable, IndexAccessor

Author:

Sanne Grinovero (C) 2011 Red Hat Inc.

Constructor Summary

Constructors

Constructor	Description
IndexAccessorImpl(EventContext eventContext, DirectoryHolder directoryHolder, IndexWriterProvider indexWriterProvider, IndexReaderProvider indexReaderProvider)

Method Summary

Modifier and Type	Method	Description
void	cleanUpAfterFailure(Throwable throwable, Object failingOperation)	Closes, drops and re-creates any cached resources: index writers, index readers.
void	close()
void	commit()	Commits the underlying index writer, if any.
void	commitOrDelay()	Commits the underlying index writer, if any, or delay the commit if a commit happened recently and configuration requires to wait longer between two commits.
long	computeSizeInBytes()
void	createIndexIfMissing()	Checks whether the index exists (on disk, ...), and creates it if necessary.
void	dropIndexIfExisting()	Checks whether the index exists (on disk, ...), and drops it if it exists.
org.apache.lucene.store.Directory	getDirectoryForTests()
org.apache.lucene.index.DirectoryReader	getIndexReader()
IndexWriterDelegator	getIndexWriterDelegator()
org.apache.lucene.index.IndexWriter	getWriterForTests()
void	mergeSegments()	Merge segments files.
void	refresh()	Refreshes the underlying index readers.
void	validateIndexExists()	Checks whether the index exists (on disk, ...), and throws an exception if it doesn't.

Methods inherited from class java.lang.Object

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

Constructor Detail

IndexAccessorImpl

public IndexAccessorImpl(EventContext eventContext,
                         DirectoryHolder directoryHolder,
                         IndexWriterProvider indexWriterProvider,
                         IndexReaderProvider indexReaderProvider)

Method Detail

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Throws:

IOException

createIndexIfMissing

public void createIndexIfMissing()

Description copied from interface: IndexAccessor

Checks whether the index exists (on disk, ...), and creates it if necessary.

Specified by:

createIndexIfMissing in interface IndexAccessor

validateIndexExists

public void validateIndexExists()

Description copied from interface: IndexAccessor

Checks whether the index exists (on disk, ...), and throws an exception if it doesn't.

Specified by:

validateIndexExists in interface IndexAccessor

dropIndexIfExisting

public void dropIndexIfExisting()

Description copied from interface: IndexAccessor

Checks whether the index exists (on disk, ...), and drops it if it exists.

Specified by:

dropIndexIfExisting in interface IndexAccessor

commit

public void commit()

Description copied from interface: IndexAccessor

Commits the underlying index writer, if any.

Specified by:

commit in interface IndexAccessor

commitOrDelay

public void commitOrDelay()

Description copied from interface: IndexAccessor

Commits the underlying index writer, if any, or delay the commit if a commit happened recently and configuration requires to wait longer between two commits.

Specified by:

commitOrDelay in interface IndexAccessor

refresh

public void refresh()

Description copied from interface: IndexAccessor

Refreshes the underlying index readers.

Specified by:

refresh in interface IndexAccessor

mergeSegments

public void mergeSegments()

Description copied from interface: IndexAccessor

Merge segments files.

Specified by:

mergeSegments in interface IndexAccessor

getIndexWriterDelegator

public IndexWriterDelegator getIndexWriterDelegator()
                                             throws IOException

Specified by:

getIndexWriterDelegator in interface IndexAccessor

Returns:

The index writer delegator.

Throws:

IOException

getIndexReader

public org.apache.lucene.index.DirectoryReader getIndexReader()
                                                       throws IOException

Specified by:

getIndexReader in interface IndexAccessor

Returns:

The most up-to-date index reader available.

Throws:

IOException

cleanUpAfterFailure

public void cleanUpAfterFailure(Throwable throwable,
                                Object failingOperation)

Description copied from interface: IndexAccessor

Closes, drops and re-creates any cached resources: index writers, index readers.

Should be used to clean up the accessor upon write or commit failure, passing an exception with as much information as possible (operation, document ID, ...).

Specified by:

cleanUpAfterFailure in interface IndexAccessor

Parameters:

throwable - The failure.

failingOperation - The operation that failed.

computeSizeInBytes

public long computeSizeInBytes()

Specified by:

computeSizeInBytes in interface IndexAccessor

Returns:

The size of the index on its storage support, in bytes.

getDirectoryForTests

public org.apache.lucene.store.Directory getDirectoryForTests()

getWriterForTests

public org.apache.lucene.index.IndexWriter getWriterForTests()
                                                      throws IOException

Throws:

IOException