com.db4o.internal.transactionlog

Class TransactionLogHandler

java.lang.Object

com.db4o.internal.transactionlog.TransactionLogHandler

Direct Known Subclasses:

EmbeddedTransactionLogHandler, FileBasedTransactionLogHandler

public abstract class TransactionLogHandler
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
protected LocalObjectContainer	_container

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	TransactionLogHandler(LocalObjectContainer container)

Method Summary

Methods

Modifier and Type	Method and Description
abstract Slot	allocateSlot(boolean append, int slotChangeCount)
protected void	appendSlotChanges(ByteArrayBuffer writer, Visitable slotChangeVisitable)
abstract void	applySlotChanges(Visitable<SlotChange> slotChangeTree, int slotChangeCount, Slot reservedSlot)
abstract void	close()
abstract void	completeInterruptedTransaction(int transactionId1, int transactionId2)
protected void	flushDatabaseFile()
protected LocalObjectContainer	localContainer()
protected void	readWriteSlotChanges(ByteArrayBuffer buffer)
protected int	transactionLogSlotLength(int slotChangeCount)
protected boolean	writeSlots(Visitable<SlotChange> slotChangeTree)

Methods inherited from class java.lang.Object

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

Field Detail

_container

protected final LocalObjectContainer _container

Constructor Detail

TransactionLogHandler

protected TransactionLogHandler(LocalObjectContainer container)

Method Detail

localContainer

protected LocalObjectContainer localContainer()

flushDatabaseFile

protected final void flushDatabaseFile()

appendSlotChanges

protected final void appendSlotChanges(ByteArrayBuffer writer,
                     Visitable slotChangeVisitable)

writeSlots

protected boolean writeSlots(Visitable<SlotChange> slotChangeTree)

transactionLogSlotLength

protected final int transactionLogSlotLength(int slotChangeCount)

allocateSlot

public abstract Slot allocateSlot(boolean append,
                int slotChangeCount)

applySlotChanges

public abstract void applySlotChanges(Visitable<SlotChange> slotChangeTree,
                    int slotChangeCount,
                    Slot reservedSlot)

completeInterruptedTransaction

public abstract void completeInterruptedTransaction(int transactionId1,
                                  int transactionId2)

close

public abstract void close()

readWriteSlotChanges

protected void readWriteSlotChanges(ByteArrayBuffer buffer)