com.sleepycat.je.tree
Class DeltaInfo

java.lang.Object
  com.sleepycat.je.tree.DeltaInfo

All Implemented Interfaces:

LogReadable, LogWritable

public class DeltaInfo
extends Object
implements LogWritable, LogReadable

DeltaInfo holds the delta for one BIN entry in a partial BIN log entry. The data here is all that we need to update a BIN to its proper state.

Constructor Summary

DeltaInfo()
For reading from the log only.

DeltaInfo(byte[] key, long lsn, byte state)

Method Summary

void	dumpLog(StringBuffer sb, boolean verbose) Write the object into the string buffer for log dumping.
(package private) byte[]	getKey()
int	getLogSize()
(package private) long	getLsn()
(package private) byte	getState()
long	getTransactionId()
(package private) boolean	isKnownDeleted()
boolean	logEntryIsTransactional()
void	readFromLog(ByteBuffer itemBuffer, byte entryTypeVersion) Initialize this object from the data in itemBuf.
void	writeToLog(ByteBuffer logBuffer) Serialize this object into the buffer.

Methods inherited from class java.lang.Object

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

Constructor Detail

DeltaInfo

DeltaInfo(byte[] key,
          long lsn,
          byte state)

DeltaInfo

DeltaInfo()

For reading from the log only.

Method Detail

getLogSize

public int getLogSize()

Specified by:

getLogSize in interface LogWritable

Returns:

number of bytes used to store this object.

writeToLog

public void writeToLog(ByteBuffer logBuffer)

Description copied from interface: LogWritable

Serialize this object into the buffer.

Specified by:

writeToLog in interface LogWritable

Parameters:

logBuffer - is the destination buffer

readFromLog

public void readFromLog(ByteBuffer itemBuffer,
                        byte entryTypeVersion)
                 throws LogException

Description copied from interface: LogReadable

Initialize this object from the data in itemBuf.

Specified by:

readFromLog in interface LogReadable

Throws:

LogException

dumpLog

public void dumpLog(StringBuffer sb,
                    boolean verbose)

Description copied from interface: LogReadable

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 LogReadable

Parameters:

sb - destination string buffer

verbose - if true, dump the full, verbose version

logEntryIsTransactional

public boolean logEntryIsTransactional()

Specified by:

logEntryIsTransactional in interface LogReadable

Returns:

true if the LogEntry is a transactional log entry type.

See Also:

LogReadable.logEntryIsTransactional()

getTransactionId

public long getTransactionId()

Specified by:

getTransactionId in interface LogReadable

Returns:

return the transaction id if this log entry is transactional, 0 otherwise.

See Also:

LogReadable.getTransactionId()

getKey

byte[] getKey()

Returns:

the Key.

getState

byte getState()

Returns:

the state flags.

isKnownDeleted

boolean isKnownDeleted()

Returns:

true if this is known to be deleted.

getLsn

long getLsn()

Returns:

the LSN.