com.sleepycat.je.log.entry

Class BINDeltaLogEntry

java.lang.Object

com.sleepycat.je.log.entry.INLogEntry<BIN>

com.sleepycat.je.log.entry.BINDeltaLogEntry

All Implemented Interfaces:

INContainingEntry, LogEntry, Cloneable

public class BINDeltaLogEntry
extends INLogEntry<BIN>

Holds a partial BIN that serves as a live BIN delta. A live delta (unlike a the obsolete OldBINDelta, which is contained in an OldBINDeltaLogEntry) may appear in the Btree to serve as an incomplete BIN.

Constructor Summary

Constructors

Constructor and Description
BINDeltaLogEntry(BIN bin) When constructing an entry for writing to the log, use LOG_BIN_DELTA.
BINDeltaLogEntry(ByteBuffer bytes, long lastFullLsn, long lastDeltaLsn, LogEntryType logEntryType, IN parent) Used to write a pre-serialized log entry.
BINDeltaLogEntry(Class<BIN> logClass)

Method Summary

Modifier and Type	Method and Description
LogEntry	clone()
Class<T>	getLogClass() Returns the class of the contained loggable item or items, or null if the instance was created to write an entry.
LogEntryType	getLogType()
Object	getResolvedItem(DatabaseImpl dbImpl) By default, this log entry is complete and does not require fetching additional entries.
boolean	isBINDelta()
boolean	isDeleted() Returns whether this is a deleted LN.
boolean	isImmediatelyObsolete(DatabaseImpl dbImpl) Returns true if this item should be counted as obsolete when logged.
void	postFetchInit(DatabaseImpl dbImpl)
void	postLogWork(LogEntryHeader header, long justLoggedLsn, VLSN vlsn) Do any processing we need to do after logging, while under the logging latch.
void	setLogType(LogEntryType entryType) Inform a BaseEntry instance of its corresponding LogEntryType.
String	toString()

Methods inherited from class com.sleepycat.je.log.entry.INLogEntry

create, dumpEntry, dumpRep, getBINWithExpiration, getDbId, getIN, getMainItem, getNodeId, getPrevDeltaLsn, getPrevFullLsn, getSize, getTransactionId, isPreSerialized, logicalEquals, readEntry, writeEntry

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.sleepycat.je.log.entry.LogEntry

clone, getLogType, getResolvedItem, isDeleted, isImmediatelyObsolete, postLogWork, setLogType

Constructor Detail

BINDeltaLogEntry

public BINDeltaLogEntry(Class<BIN> logClass)

BINDeltaLogEntry

public BINDeltaLogEntry(BIN bin)

When constructing an entry for writing to the log, use LOG_BIN_DELTA.

BINDeltaLogEntry

public BINDeltaLogEntry(ByteBuffer bytes,
                        long lastFullLsn,
                        long lastDeltaLsn,
                        LogEntryType logEntryType,
                        IN parent)

Used to write a pre-serialized log entry.

Method Detail

isBINDelta

public boolean isBINDelta()

Specified by:

isBINDelta in interface INContainingEntry

Overrides:

isBINDelta in class INLogEntry<BIN>

getLogClass

public Class<T> getLogClass()

Returns the class of the contained loggable item or items, or null if the instance was created to write an entry.

Returns:

the loggable class or null

setLogType

public void setLogType(LogEntryType entryType)

Inform a BaseEntry instance of its corresponding LogEntryType.

Specified by:

setLogType in interface LogEntry

getLogType

public LogEntryType getLogType()

Specified by:

getLogType in interface LogEntry

Returns:

the type of log entry

getResolvedItem

public Object getResolvedItem(DatabaseImpl dbImpl)

By default, this log entry is complete and does not require fetching additional entries. This method is overridden by BINDeltaLogEntry.

Specified by:

getResolvedItem in interface LogEntry

isImmediatelyObsolete

public boolean isImmediatelyObsolete(DatabaseImpl dbImpl)

Description copied from interface: LogEntry

Returns true if this item should be counted as obsolete when logged.

Specified by:

isImmediatelyObsolete in interface LogEntry

isDeleted

public boolean isDeleted()

Description copied from interface: LogEntry

Returns whether this is a deleted LN.

Specified by:

isDeleted in interface LogEntry

postLogWork

public void postLogWork(LogEntryHeader header,
                        long justLoggedLsn,
                        VLSN vlsn)

Do any processing we need to do after logging, while under the logging latch.

Specified by:

postLogWork in interface LogEntry

Throws:

DatabaseException - from subclasses.

postFetchInit

public void postFetchInit(DatabaseImpl dbImpl)

clone

public LogEntry clone()

Specified by:

clone in interface LogEntry

Overrides:

clone in class Object

Returns:

a shallow clone.

toString

public String toString()

Overrides:

toString in class Object