Package com.orientechnologies.orient.core.storage.cache.local.doublewritelog

Class DoubleWriteLogGL

java.lang.Object

com.orientechnologies.orient.core.storage.cache.local.doublewritelog.DoubleWriteLogGL

All Implemented Interfaces:

DoubleWriteLog

public class DoubleWriteLogGL
extends Object
implements DoubleWriteLog

Field Summary

Fields

Modifier and Type	Field	Description
static final String	EXTENSION	Stands for "double write log"

Constructor Summary

Constructors

Constructor	Description
DoubleWriteLogGL(long maxSegSize)
DoubleWriteLogGL(long maxSegSize, int blockSize)

Method Summary

Modifier and Type	Method	Description
void	close()
void	endCheckpoint()
OPointer	loadPage(int fileId, int pageIndex, OByteBufferPool bufferPool)
void	open(String storageName, Path storagePath, int pageSize)
void	restoreModeOff()
void	restoreModeOn()
void	startCheckpoint()
void	truncate()
boolean	write(ByteBuffer[] buffers, int[] fileIds, int[] pageIndexes)

Methods inherited from class java.lang.Object

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

Field Details

EXTENSION

public static final String EXTENSION

Stands for "double write log"

See Also:

• Constant Field Values

Constructor Details

DoubleWriteLogGL

public DoubleWriteLogGL(long maxSegSize)

DoubleWriteLogGL

public DoubleWriteLogGL(long maxSegSize,
 int blockSize)

Method Details

open

public void open(String storageName,
 Path storagePath,
 int pageSize)
          throws IOException

Specified by:

open in interface DoubleWriteLog

Throws:

IOException

write

public boolean write(ByteBuffer[] buffers,
 int[] fileIds,
 int[] pageIndexes)
              throws IOException

Specified by:

write in interface DoubleWriteLog

Throws:

IOException

truncate

public void truncate()
              throws IOException

Specified by:

truncate in interface DoubleWriteLog

Throws:

IOException

loadPage

public OPointer loadPage(int fileId,
 int pageIndex,
 OByteBufferPool bufferPool)
                  throws IOException

Specified by:

loadPage in interface DoubleWriteLog

Throws:

IOException

restoreModeOn

public void restoreModeOn()
                   throws IOException

Specified by:

restoreModeOn in interface DoubleWriteLog

Throws:

IOException

restoreModeOff

public void restoreModeOff()

Specified by:

restoreModeOff in interface DoubleWriteLog

close

public void close()
           throws IOException

Specified by:

close in interface DoubleWriteLog

Throws:

IOException

startCheckpoint

public void startCheckpoint()
                     throws IOException

Specified by:

startCheckpoint in interface DoubleWriteLog

Throws:

IOException

endCheckpoint

public void endCheckpoint()

Specified by:

endCheckpoint in interface DoubleWriteLog