org.exist.storage.dom
Class SplitPageLoggable

java.lang.Object
  org.exist.storage.journal.AbstractLoggable
      org.exist.storage.dom.SplitPageLoggable

All Implemented Interfaces:

Loggable

public class SplitPageLoggable

extends AbstractLoggable

implements Loggable

Author:

wolf

Field Summary

protected byte[]	oldData
protected int	oldLen
protected long	pageNum
protected int	splitOffset

Fields inherited from class org.exist.storage.journal.AbstractLoggable

lsn, transactId, type

Constructor Summary

SplitPageLoggable(DBBroker broker, long transactId)

SplitPageLoggable(Txn transaction, long pageNum, int splitOffset, byte[] oldData, int oldLen)

Method Summary

java.lang.String	dump() Returns a description of the entry for debugging purposes.
int	getLogSize() Returns the size of the work load of this entry.
void	read(java.nio.ByteBuffer in) Read the entry.
void	redo() Redo the underlying operation.
void	undo() Undo, i.e.
void	write(java.nio.ByteBuffer out) Write this entry to the specified ByteBuffer.

Methods inherited from class org.exist.storage.journal.AbstractLoggable

clear, getLogType, getLsn, getTransactionId, setLsn

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.exist.storage.journal.Loggable

getLogType, getLsn, getTransactionId, setLsn

Field Detail

pageNum

protected long pageNum

splitOffset

protected int splitOffset

oldData

protected byte[] oldData

oldLen

protected int oldLen

Constructor Detail

SplitPageLoggable

public SplitPageLoggable(Txn transaction,
                         long pageNum,
                         int splitOffset,
                         byte[] oldData,
                         int oldLen)

SplitPageLoggable

public SplitPageLoggable(DBBroker broker,
                         long transactId)

Method Detail

write

public void write(java.nio.ByteBuffer out)

Description copied from interface: Loggable

Write this entry to the specified ByteBuffer.

Specified by:

write in interface Loggable

Parameters:

out -

read

public void read(java.nio.ByteBuffer in)

Description copied from interface: Loggable

Read the entry.

Specified by:

read in interface Loggable

Parameters:

in -

getLogSize

public int getLogSize()

Description copied from interface: Loggable

Returns the size of the work load of this entry.

Specified by:

getLogSize in interface Loggable

Returns:

redo

public void redo()
          throws LogException

Description copied from interface: Loggable

Redo the underlying operation. This method is called by RecoveryManager.

Specified by:

redo in interface Loggable

Overrides:

redo in class AbstractLoggable

Throws:

LogException

undo

public void undo()
          throws LogException

Description copied from interface: Loggable

Undo, i.e. roll back, the underlying operation. The method is called by RecoveryManager.

Specified by:

undo in interface Loggable

Overrides:

undo in class AbstractLoggable

Throws:

LogException

dump

public java.lang.String dump()

Description copied from interface: Loggable

Returns a description of the entry for debugging purposes.

Specified by:

dump in interface Loggable

Overrides:

dump in class AbstractLoggable