org.tools4j.elara.log

Class EventLogRepairer

java.lang.Object

org.tools4j.elara.log.EventLogRepairer

public class EventLogRepairer
extends Object

Class to repair an event log that was corrupted usually due to application crash. A corrupted event log is an event log that is non-empty and whose last event entry has neither the commit nor the rollback flag set.

See Also:

Event.Flags.isFinal()

Constructor Summary

Constructors

Constructor and Description
EventLogRepairer(MessageLog eventLog) Initialises this repairer with the given eventLog

Method Summary

Modifier and Type	Method and Description
boolean	isCorrupted()
boolean	repair() Repairs the event log if necessary and leaves it an uncorrupted state.

Methods inherited from class java.lang.Object

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

Constructor Detail

EventLogRepairer

public EventLogRepairer(MessageLog eventLog)

Initialises this repairer with the given eventLog

Parameters:

eventLog - the event log to inspect and prepare for reparation

Throws:

IllegalArgumentException - if eventLog is not a valid event log or a wroong version or if it cannot be repaired

Method Detail

isCorrupted

public boolean isCorrupted()

repair

public boolean repair()

Repairs the event log if necessary and leaves it an uncorrupted state.

Returns:

true if any modification was necessary, and false if the event log was uncorrupted