Package com.arcadedb.engine

Class TransactionManager

java.lang.Object

com.arcadedb.engine.TransactionManager

public class TransactionManager
extends Object

Constructor Summary

Constructors

Constructor	Description
TransactionManager(DatabaseInternal database)

Method Summary

Modifier and Type	Method	Description
boolean	applyChanges(WALFile.WALTransaction tx)
void	checkIntegrity()
void	close(boolean drop)
Binary	createTransactionBuffer(long txId, List<MutablePage> pages)
long	getNextTransactionId()
Map<String,Object>	getStats()
void	kill()
void	notifyPageFlushed(MutablePage page)
LockManager.LOCK_STATUS	tryLockFile(Integer fileId, long timeout)
List<Integer>	tryLockFiles(Collection<Integer> fileIds, long timeout)	Returns the locked files only.
void	unlockFile(Integer fileId)
void	unlockFilesInOrder(List<Integer> lockedFileIds)
void	writeTransactionToWAL(List<MutablePage> pages, WALFile.FLUSH_TYPE sync, long txId, Binary bufferChanges)

Methods inherited from class java.lang.Object

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

Constructor Detail

TransactionManager

public TransactionManager(DatabaseInternal database)

Method Detail

close

public void close(boolean drop)

createTransactionBuffer

public Binary createTransactionBuffer(long txId,
                                      List<MutablePage> pages)

writeTransactionToWAL

public void writeTransactionToWAL(List<MutablePage> pages,
                                  WALFile.FLUSH_TYPE sync,
                                  long txId,
                                  Binary bufferChanges)

notifyPageFlushed

public void notifyPageFlushed(MutablePage page)

checkIntegrity

public void checkIntegrity()

getStats

public Map<String,Object> getStats()

applyChanges

public boolean applyChanges(WALFile.WALTransaction tx)

kill

public void kill()

getNextTransactionId

public long getNextTransactionId()

tryLockFiles

public List<Integer> tryLockFiles(Collection<Integer> fileIds,
                                  long timeout)

Returns the locked files only. In case the current thread already locked a resource, no error is thrown but the lock is not returned. In this way only the new acquired locks are released.

unlockFilesInOrder

public void unlockFilesInOrder(List<Integer> lockedFileIds)

tryLockFile

public LockManager.LOCK_STATUS tryLockFile(Integer fileId,
                                           long timeout)

unlockFile

public void unlockFile(Integer fileId)