com.sleepycat.je.log.entry

Class BINDeltaLogEntry

java.lang.Object

com.sleepycat.je.log.entry.BaseEntry

com.sleepycat.je.log.entry.SingleItemEntry

com.sleepycat.je.log.entry.BINDeltaLogEntry

All Implemented Interfaces:

INContainingEntry, LogEntry, java.lang.Cloneable

public class BINDeltaLogEntry
extends SingleItemEntry
implements INContainingEntry

A BINDeltaLogEntry knows how to create a whole BIN from a delta entry.

Field Summary

Fields inherited from class com.sleepycat.je.log.entry.BaseEntry

entryType

Constructor Summary

Constructors

Constructor and Description
BINDeltaLogEntry(BINDelta delta) Construct a log entry for writing to the log.
BINDeltaLogEntry(java.lang.Class<BINDelta> logClass)

Method Summary

Methods

Modifier and Type	Method and Description
DatabaseId	getDbId()
IN	getIN(DatabaseImpl dbImpl)
long	getPrevDeltaLsn()
long	getPrevFullLsn()
java.lang.Object	getResolvedItem(DatabaseImpl dbImpl) Resolve a BINDelta item by fetching the full BIN and merging the delta.

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

dumpEntry, dumpRep, getMainItem, getSize, getTransactionId, logicalEquals, readEntry, writeEntry

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

clone, getLastLoggedSize, getLogType, getNoArgsConstructor, isDeleted, newInstanceOfType, newInstanceOfType, postFetchInit, postLogWork, setLogType, toString

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, getLastLoggedSize, getLogType, isDeleted, postLogWork, setLogType

Constructor Detail

BINDeltaLogEntry

public BINDeltaLogEntry(java.lang.Class<BINDelta> logClass)

Parameters:

logClass -

BINDeltaLogEntry

public BINDeltaLogEntry(BINDelta delta)

Construct a log entry for writing to the log.

Method Detail

getResolvedItem

public java.lang.Object getResolvedItem(DatabaseImpl dbImpl)

Resolve a BINDelta item by fetching the full BIN and merging the delta.

Specified by:

getResolvedItem in interface LogEntry

Overrides:

getResolvedItem in class BaseEntry

getIN

public IN getIN(DatabaseImpl dbImpl)
         throws DatabaseException

Specified by:

getIN in interface INContainingEntry

Returns:

the IN held within this log entry.

Throws:

DatabaseException

getDbId

public DatabaseId getDbId()

Specified by:

getDbId in interface INContainingEntry

Specified by:

getDbId in interface LogEntry

Overrides:

getDbId in class SingleItemEntry

Returns:

the ID of the database containing this entry, or null if this entry type is not part of a database.

getPrevFullLsn

public long getPrevFullLsn()

Specified by:

getPrevFullLsn in interface INContainingEntry

Returns:

the LSN of the prior full version of this node, or NULL_LSN if there is no prior full version. Used for counting the prior version as obsolete. If the offset of the LSN is zero, only the file number is known because we read a version 1 log entry.

getPrevDeltaLsn

public long getPrevDeltaLsn()

Specified by:

getPrevDeltaLsn in interface INContainingEntry

Returns:

the LSN of the prior delta version of this node, or NULL_LSN if the prior version is a full version. Used for counting the prior version as obsolete. If the offset of the LSN is zero, only the file number is known because we read a version 1 log entry.