com.sleepycat.je.txn

Class RollbackStart

java.lang.Object

com.sleepycat.je.txn.RollbackStart

All Implemented Interfaces:

Loggable

public class RollbackStart
extends Object
implements Loggable

This class indicates the end of a partial rollback at syncup. This is a non-replicated entry. Although this is a replication related class, it resides in the utilint package because it is referenced in LogEntryType.java, and is used in a general way at recovery.

Constructor Summary

Constructors

Constructor and Description
RollbackStart() For constructing from the log.
RollbackStart(VLSN matchpointVLSN, long matchpointLSN, Set<Long> activeTxnIds)

Method Summary

Modifier and Type	Method and Description
void	dumpLog(StringBuilder sb, boolean verbose) Write the object into the string buffer for log dumping.
Set<Long>	getActiveTxnIds()
int	getLogSize()
long	getMatchpoint()
VLSN	getMatchpointVLSN()
long	getTransactionId()
boolean	logicalEquals(Loggable other)
void	readFromLog(ByteBuffer buffer, int entryVersion) "
String	toString()
void	writeToLog(ByteBuffer buffer) Serialize this object into the buffer.

Methods inherited from class java.lang.Object

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

Constructor Detail

RollbackStart

public RollbackStart(VLSN matchpointVLSN,
                     long matchpointLSN,
                     Set<Long> activeTxnIds)

RollbackStart

public RollbackStart()

For constructing from the log.

Method Detail

getMatchpoint

public long getMatchpoint()

getActiveTxnIds

public Set<Long> getActiveTxnIds()

getMatchpointVLSN

public VLSN getMatchpointVLSN()

getLogSize

public int getLogSize()

Specified by:

getLogSize in interface Loggable

Returns:

number of bytes used to store this object.

See Also:

Loggable.getLogSize()

writeToLog

public void writeToLog(ByteBuffer buffer)

Description copied from interface: Loggable

Serialize this object into the buffer.

Specified by:

writeToLog in interface Loggable

Parameters:

buffer - is the destination buffer

See Also:

Loggable.writeToLog(java.nio.ByteBuffer)

readFromLog

public void readFromLog(ByteBuffer buffer,
                        int entryVersion)

"

Specified by:

readFromLog in interface Loggable

Parameters:

buffer - the source buffer

entryVersion - the log version of the data

See Also:

Loggable.readFromLog(java.nio.ByteBuffer, int)

dumpLog

public void dumpLog(StringBuilder sb,
                    boolean verbose)

Description copied from interface: Loggable

Write the object into the string buffer for log dumping. Each object should be dumped without indentation or new lines and should be valid XML.

Specified by:

dumpLog in interface Loggable

Parameters:

sb - destination string buffer

verbose - if true, dump the full, verbose version

See Also:

Loggable.dumpLog(java.lang.StringBuilder, boolean)

getTransactionId

public long getTransactionId()

Specified by:

getTransactionId in interface Loggable

Returns:

the transaction id embedded within this loggable object. Objects that have no transaction id should return 0.

See Also:

Loggable.getTransactionId()

logicalEquals

public boolean logicalEquals(Loggable other)

Specified by:

logicalEquals in interface Loggable

Returns:

true if these two loggable items are logically the same. Used for replication testing.

See Also:

Loggable.logicalEquals(com.sleepycat.je.log.Loggable)

toString

public String toString()

Overrides:

toString in class Object