com.sleepycat.je.log
Class StatsFileReader

java.lang.Object
  com.sleepycat.je.log.FileReader
      com.sleepycat.je.log.DumpFileReader
          com.sleepycat.je.log.StatsFileReader

public class StatsFileReader
extends DumpFileReader

The StatsFileReader generates stats about the log entries read, such as the count of each type of entry, the number of bytes, minimum and maximum sized log entry.

Nested Class Summary

(package private) static class	StatsFileReader.CheckpointCounter
(package private) static class	StatsFileReader.EntryInfo
(package private) static class	StatsFileReader.LogEntryTypeComparator

Field Summary

Fields inherited from class com.sleepycat.je.log.DumpFileReader

targetTxnIds, verbose

Fields inherited from class com.sleepycat.je.log.FileReader

anticipateChecksumErrors, cksumValidator, currentEntryHeader, currentEntryOffset, currentEntryPrevOffset, envImpl, eof, fileManager, nextEntryOffset, readBufferFileEnd, readBufferFileNum, readBufferFileStart, startLsn

Constructor Summary

StatsFileReader(EnvironmentImpl envImpl, int readBufferSize, long startLsn, long finishLsn, java.lang.String entryTypes, java.lang.String txnIds, boolean verbose)
Create this reader to start at a given LSN.

Method Summary

protected boolean	processEntry(java.nio.ByteBuffer entryBuffer) This reader collects stats about the log entry.
void	summarize()

Methods inherited from class com.sleepycat.je.log.DumpFileReader

isTargetEntry

Methods inherited from class com.sleepycat.je.log.FileReader

getAndResetNReads, getLastEntrySize, getLastLsn, getNRepeatIteratorReads, getNumRead, initStartingPosition, readEntry, readNextEntry, resyncReader, setAlwaysValidateChecksum, threadSafeBufferPosition

Methods inherited from class java.lang.Object

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

Constructor Detail

StatsFileReader

public StatsFileReader(EnvironmentImpl envImpl,
                       int readBufferSize,
                       long startLsn,
                       long finishLsn,
                       java.lang.String entryTypes,
                       java.lang.String txnIds,
                       boolean verbose)
                throws java.io.IOException,
                       DatabaseException

Create this reader to start at a given LSN.

Throws:

java.io.IOException

DatabaseException

Method Detail

processEntry

protected boolean processEntry(java.nio.ByteBuffer entryBuffer)
                        throws DatabaseException

This reader collects stats about the log entry.

Specified by:

processEntry in class FileReader

Returns:

true if this entry should be returned

Throws:

DatabaseException

summarize

public void summarize()

Overrides:

summarize in class DumpFileReader