org.apache.activemq.artemis.jdbc.store.file

Class JDBCSequentialFileFactory

java.lang.Object

org.apache.activemq.artemis.jdbc.store.file.JDBCSequentialFileFactory

All Implemented Interfaces:

SequentialFileFactory, ActiveMQComponent

public class JDBCSequentialFileFactory
extends Object
implements SequentialFileFactory, ActiveMQComponent

Constructor Summary

Constructors

Constructor and Description
JDBCSequentialFileFactory(String connectionUrl, String tableName, String className, Executor executor)

Method Summary

Modifier and Type	Method and Description
void	activateBuffer(SequentialFile file)
ByteBuffer	allocateDirectBuffer(int size) used for cases where you need direct buffer outside of the journal context.
int	calculateBlockSize(int bytes)
void	clearBuffer(ByteBuffer buffer)
void	createDirs() Creates the directory if it does not exist yet.
SequentialFile	createSequentialFile(String fileName)
void	deactivateBuffer()
void	destroy()
void	flush()
int	getAlignment()
File	getDirectory()
int	getMaxIO()
boolean	isStarted()
boolean	isSupportsCallbacks()
List<String>	listFiles(String extension) Lists files that end with the given extension.
ByteBuffer	newBuffer(int size) Note: You need to release the buffer if is used for reading operations.
void	onIOError(Exception exception, String message, SequentialFile file) The SequentialFile will call this method when a disk IO Error happens during the live phase.
void	releaseBuffer(ByteBuffer buffer)
void	releaseDirectBuffer(ByteBuffer buffer) used for cases where you need direct buffer outside of the journal context.
void	start()
void	stop()
ByteBuffer	wrapBuffer(byte[] bytes)

Methods inherited from class java.lang.Object

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

Constructor Detail

JDBCSequentialFileFactory

public JDBCSequentialFileFactory(String connectionUrl,
                                 String tableName,
                                 String className,
                                 Executor executor)
                          throws Exception

Throws:

Exception

Method Detail

start

public void start()

Specified by:

start in interface SequentialFileFactory

Specified by:

start in interface ActiveMQComponent

stop

public void stop()

Specified by:

stop in interface SequentialFileFactory

Specified by:

stop in interface ActiveMQComponent

createSequentialFile

public SequentialFile createSequentialFile(String fileName)

Specified by:

createSequentialFile in interface SequentialFileFactory

getMaxIO

public int getMaxIO()

Specified by:

getMaxIO in interface SequentialFileFactory

listFiles

public List<String> listFiles(String extension)
                       throws Exception

Description copied from interface: SequentialFileFactory

Lists files that end with the given extension.

This method inserts a ".' before the extension.

Specified by:

listFiles in interface SequentialFileFactory

Returns:

Throws:

Exception

isSupportsCallbacks

public boolean isSupportsCallbacks()

Specified by:

isSupportsCallbacks in interface SequentialFileFactory

onIOError

public void onIOError(Exception exception,
                      String message,
                      SequentialFile file)

Description copied from interface: SequentialFileFactory

The SequentialFile will call this method when a disk IO Error happens during the live phase.

Specified by:

onIOError in interface SequentialFileFactory

allocateDirectBuffer

public ByteBuffer allocateDirectBuffer(int size)

Description copied from interface: SequentialFileFactory

used for cases where you need direct buffer outside of the journal context. This is because the native layer has a method that can be reused in certain cases like paging

Specified by:

allocateDirectBuffer in interface SequentialFileFactory

releaseDirectBuffer

public void releaseDirectBuffer(ByteBuffer buffer)

Description copied from interface: SequentialFileFactory

used for cases where you need direct buffer outside of the journal context. This is because the native layer has a method that can be reused in certain cases like paging

Specified by:

releaseDirectBuffer in interface SequentialFileFactory

newBuffer

public ByteBuffer newBuffer(int size)

Description copied from interface: SequentialFileFactory

Note: You need to release the buffer if is used for reading operations. You don't need to do it if using writing operations (AIO Buffer Lister will take of writing operations)

Specified by:

newBuffer in interface SequentialFileFactory

Returns:

the allocated ByteBuffer

clearBuffer

public void clearBuffer(ByteBuffer buffer)

Specified by:

clearBuffer in interface SequentialFileFactory

wrapBuffer

public ByteBuffer wrapBuffer(byte[] bytes)

Specified by:

wrapBuffer in interface SequentialFileFactory

getAlignment

public int getAlignment()

Specified by:

getAlignment in interface SequentialFileFactory

calculateBlockSize

public int calculateBlockSize(int bytes)

Specified by:

calculateBlockSize in interface SequentialFileFactory

deactivateBuffer

public void deactivateBuffer()

Specified by:

deactivateBuffer in interface SequentialFileFactory

releaseBuffer

public void releaseBuffer(ByteBuffer buffer)

Specified by:

releaseBuffer in interface SequentialFileFactory

activateBuffer

public void activateBuffer(SequentialFile file)

Specified by:

activateBuffer in interface SequentialFileFactory

getDirectory

public File getDirectory()

Specified by:

getDirectory in interface SequentialFileFactory

isStarted

public boolean isStarted()

Specified by:

isStarted in interface ActiveMQComponent

createDirs

public void createDirs()
                throws Exception

Description copied from interface: SequentialFileFactory

Creates the directory if it does not exist yet.

Specified by:

createDirs in interface SequentialFileFactory

Throws:

Exception

flush

public void flush()

Specified by:

flush in interface SequentialFileFactory

destroy

public void destroy()
             throws SQLException

Throws:

SQLException