org.exist.storage.journal
Class LogEntryTypes

java.lang.Object
  org.exist.storage.journal.LogEntryTypes

public class LogEntryTypes
extends java.lang.Object

Registry for log entry types. All classes that can be read from or written to the journal have to be registered here. The recovery manager uses this information to create the correct Loggable object when reading the log.

Author:

wolf

Field Summary

static byte	CHECKPOINT
static byte	TXN_ABORT
static byte	TXN_COMMIT
static byte	TXN_START

Constructor Summary

LogEntryTypes()

Method Summary

static void	addEntryType(byte type, java.lang.Class clazz) Add an entry type to the registry.
static Loggable	create(byte type, DBBroker broker, long transactId) Create a new loggable object for the given type.

Methods inherited from class java.lang.Object

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

Field Detail

TXN_START

public static final byte TXN_START

See Also:

Constant Field Values

TXN_COMMIT

public static final byte TXN_COMMIT

See Also:

Constant Field Values

CHECKPOINT

public static final byte CHECKPOINT

See Also:

Constant Field Values

TXN_ABORT

public static final byte TXN_ABORT

See Also:

Constant Field Values

Constructor Detail

LogEntryTypes

public LogEntryTypes()

Method Detail

addEntryType

public static final void addEntryType(byte type,
                                      java.lang.Class clazz)

Add an entry type to the registry.

Parameters:

type -

clazz - the class implementing Loggable.

create

public static final Loggable create(byte type,
                                    DBBroker broker,
                                    long transactId)
                             throws LogException

Create a new loggable object for the given type.

Parameters:

type -

transactId - the id of the current transaction.

Returns:

Throws:

LogException