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java.lang.Objectcom.sleepycat.je.log.FileHeader
public class FileHeader
A FileHeader embodies the header information at the beginning of each log file.
Constructor Summary | |
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FileHeader()
For logging only. |
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FileHeader(long fileNum,
long lastEntryInPrevFileOffset)
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Method Summary | |
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boolean |
countAsObsoleteWhenLogged()
Returns true if this item should be counted as obsoleted when logged. |
void |
dumpLog(StringBuffer sb,
boolean verbose)
Write the object into the string buffer for log dumping. |
(package private) static int |
entrySize()
A header is always a known size. |
(package private) long |
getLastEntryInPrevFileOffset()
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int |
getLogSize()
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LogEntryType |
getLogType()
All objects that are reponsible for a generating a type of log entry must implement this. |
long |
getTransactionId()
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boolean |
logEntryIsTransactional()
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boolean |
marshallOutsideWriteLatch()
Return true if this item can be marshalled outside the log write latch. |
void |
postLogWork(long justLoggedLsn)
Do any processing we need to do after logging, while under the logging latch. |
void |
readFromLog(ByteBuffer logBuffer,
byte entryTypeVersion)
Initialize this object from the data in itemBuf. |
String |
toString()
Print in xml format |
(package private) boolean |
validate(String fileName,
long expectedFileNum)
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void |
writeToLog(ByteBuffer logBuffer)
Serialize this object into the buffer. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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FileHeader(long fileNum, long lastEntryInPrevFileOffset)
public FileHeader()
Method Detail |
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boolean validate(String fileName, long expectedFileNum) throws DatabaseException
DatabaseException
- if the header isn't valid.long getLastEntryInPrevFileOffset()
public LogEntryType getLogType()
LoggableObject
getLogType
in interface LoggableObject
LoggableObject.getLogType()
public boolean marshallOutsideWriteLatch()
LoggableObject
marshallOutsideWriteLatch
in interface LoggableObject
Can be marshalled outside the log write latch.
public boolean countAsObsoleteWhenLogged()
LoggableObject
countAsObsoleteWhenLogged
in interface LoggableObject
LoggableObject.countAsObsoleteWhenLogged()
public void postLogWork(long justLoggedLsn) throws DatabaseException
LoggableObject
postLogWork
in interface LoggableObject
DatabaseException
LoggableObject.postLogWork(long)
static int entrySize()
public int getLogSize()
getLogSize
in interface LogWritable
LogWritable.getLogSize()
public void writeToLog(ByteBuffer logBuffer)
LogWritable
writeToLog
in interface LogWritable
logBuffer
- is the destination bufferSerialize this object into the buffer. Update cksum with all
the bytes used by this object
public void readFromLog(ByteBuffer logBuffer, byte entryTypeVersion) throws LogException
LogReadable
readFromLog
in interface LogReadable
itemBuf
- the source buffer
LogException
Initialize this object from the data in itemBuf.
public void dumpLog(StringBuffer sb, boolean verbose)
LogReadable
dumpLog
in interface LogReadable
sb
- destination string bufferverbose
- if true, dump the full, verbose versionLogReadable.dumpLog(java.lang.StringBuffer, boolean)
public boolean logEntryIsTransactional()
logEntryIsTransactional
in interface LogReadable
LogReadable.logEntryIsTransactional()
public long getTransactionId()
getTransactionId
in interface LogReadable
LogReadable.getTransactionId()
public String toString()
toString
in class Object
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