com.sleepycat.je.log.entry

Class FileHeaderEntry

java.lang.Object

com.sleepycat.je.log.entry.SingleItemEntry<FileHeader>

com.sleepycat.je.log.entry.FileHeaderEntry

All Implemented Interfaces:

LogEntry, Cloneable

public class FileHeaderEntry
extends SingleItemEntry<FileHeader>

Contains a FileHeader entry.

Constructor Summary

Constructors

Constructor and Description
FileHeaderEntry(Class<FileHeader> logClass) Construct a log entry for reading.
FileHeaderEntry(LogEntryType entryType, FileHeader item) Construct a log entry for writing.

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	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	readEntry(EnvironmentImpl envImpl, LogEntryHeader header, ByteBuffer entryBuffer) For a file header, the version is not available until after reading the item.
void	setLogType(LogEntryType entryType) Inform a BaseEntry instance of its corresponding LogEntryType.
String	toString()

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

create, create, dumpEntry, dumpRep, getDbId, getMainItem, getSize, getTransactionId, logicalEquals, 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

FileHeaderEntry

public FileHeaderEntry(Class<FileHeader> logClass)

Construct a log entry for reading.

FileHeaderEntry

public FileHeaderEntry(LogEntryType entryType,
                       FileHeader item)

Construct a log entry for writing.

Method Detail

readEntry

public void readEntry(EnvironmentImpl envImpl,
                      LogEntryHeader header,
                      ByteBuffer entryBuffer)

For a file header, the version is not available until after reading the item. Set the version in the entry header so it can be used by FileReaders, etc. [#16939]

Specified by:

readEntry in interface LogEntry

Overrides:

readEntry in class SingleItemEntry<FileHeader>

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