com.orientechnologies.orient.core.storage.impl.local.paginated.wal

Class OAbstractWriteAheadLog

java.lang.Object

com.orientechnologies.orient.core.storage.impl.local.paginated.wal.OAbstractWriteAheadLog

All Implemented Interfaces:

OWriteAheadLog

Direct Known Subclasses:

ODiskWriteAheadLog, OMemoryWriteAheadLog

public abstract class OAbstractWriteAheadLog
extends Object
implements OWriteAheadLog

Since:

6/25/14

Author:

Andrey Lomakin (a.lomakin-at-orientechnologies.com)

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	closed
protected OLogSequenceNumber	lastCheckpoint
protected Lock	syncObject

Constructor Summary

Constructors

Constructor and Description
OAbstractWriteAheadLog()

Method Summary

Modifier and Type	Method and Description
protected void	checkForClose()
OLogSequenceNumber	getLastCheckpoint()
OLogSequenceNumber	logFullCheckpointEnd()
OLogSequenceNumber	logFullCheckpointStart()
OLogSequenceNumber	logFuzzyCheckPointEnd()
OLogSequenceNumber	logFuzzyCheckPointStart(OLogSequenceNumber flushedLsn)

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.orientechnologies.orient.core.storage.impl.local.paginated.wal.OWriteAheadLog

activeSegment, addCutTillLimit, addFullCheckpointListener, addLowDiskSpaceListener, appendNewSegment, begin, close, close, cutTill, delete, delete, end, flush, getFlushedLsn, getOldestTxLsn, getPreferredSegmentCount, log, logAtomicOperationEndRecord, logAtomicOperationStartRecord, moveLsnAfter, next, nonActiveSegments, read, removeCutTillLimit, removeFullCheckpointListener, removeLowDiskSpaceListener, truncate

Field Detail

closed

protected boolean closed

syncObject

protected final Lock syncObject

lastCheckpoint

protected OLogSequenceNumber lastCheckpoint

Constructor Detail

OAbstractWriteAheadLog

public OAbstractWriteAheadLog()

Method Detail

logFuzzyCheckPointStart

public OLogSequenceNumber logFuzzyCheckPointStart(OLogSequenceNumber flushedLsn)
                                           throws IOException

Specified by:

logFuzzyCheckPointStart in interface OWriteAheadLog

Throws:

IOException

logFuzzyCheckPointEnd

public OLogSequenceNumber logFuzzyCheckPointEnd()
                                         throws IOException

Specified by:

logFuzzyCheckPointEnd in interface OWriteAheadLog

Throws:

IOException

logFullCheckpointStart

public OLogSequenceNumber logFullCheckpointStart()
                                          throws IOException

Specified by:

logFullCheckpointStart in interface OWriteAheadLog

Throws:

IOException

logFullCheckpointEnd

public OLogSequenceNumber logFullCheckpointEnd()
                                        throws IOException

Specified by:

logFullCheckpointEnd in interface OWriteAheadLog

Throws:

IOException

getLastCheckpoint

public OLogSequenceNumber getLastCheckpoint()

Specified by:

getLastCheckpoint in interface OWriteAheadLog

checkForClose

protected void checkForClose()