com.sleepycat.je.cleaner

Class DbFileSummary

java.lang.Object

com.sleepycat.je.cleaner.DbFileSummary

All Implemented Interfaces:

Loggable

public class DbFileSummary
extends java.lang.Object
implements Loggable

Per-DB-per-file utilization counters. The DatabaseImpl stores a persistent map of file number to DbFileSummary.

Field Summary

Fields

Modifier and Type	Field and Description
int	obsoleteINCount
int	obsoleteLNCount
int	obsoleteLNSize
int	obsoleteLNSizeCounted
int	totalINCount
int	totalINSize
int	totalLNCount
int	totalLNSize

Constructor Summary

Constructors

Constructor and Description
DbFileSummary() Creates an empty summary.

Method Summary

Methods

Modifier and Type	Method and Description
void	add(DbFileSummary o) Add the totals of the given summary object to the totals of this object.
void	dumpLog(java.lang.StringBuffer buf, boolean verbose) Write the object into the string buffer for log dumping.
int	getLogSize()
int	getNonObsoleteCount() Returns the number of non-obsolete LN and IN entries.
int	getObsoleteINSize() Returns the approximate byte size of all obsolete IN entries.
int	getObsoleteLNSize() Returns the approximate byte size of all obsolete LN entries.
int	getObsoleteSize() Returns an estimate of the total bytes that are obsolete.
long	getTransactionId() Never called.
boolean	isEmpty() Returns whether this summary contains any non-zero totals.
boolean	logicalEquals(Loggable other)
void	readFromLog(java.nio.ByteBuffer buf, byte entryTypeVersion) Initialize this object from the data in itemBuf.
void	reset() Reset all totals to zero.
java.lang.String	toString()
void	writeToLog(java.nio.ByteBuffer buf) Serialize this object into the buffer.

Methods inherited from class java.lang.Object

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

Field Detail

totalINCount

public int totalINCount

totalINSize

public int totalINSize

totalLNCount

public int totalLNCount

totalLNSize

public int totalLNSize

obsoleteINCount

public int obsoleteINCount

obsoleteLNCount

public int obsoleteLNCount

obsoleteLNSize

public int obsoleteLNSize

obsoleteLNSizeCounted

public int obsoleteLNSizeCounted

Constructor Detail

DbFileSummary

public DbFileSummary()

Creates an empty summary.

Method Detail

isEmpty

public boolean isEmpty()

Returns whether this summary contains any non-zero totals.

getObsoleteLNSize

public int getObsoleteLNSize()

Returns the approximate byte size of all obsolete LN entries. In FileSummaryLN version 3 and greater the exact tracked size is used.

getObsoleteINSize

public int getObsoleteINSize()

Returns the approximate byte size of all obsolete IN entries.

getObsoleteSize

public int getObsoleteSize()

Returns an estimate of the total bytes that are obsolete.

getNonObsoleteCount

public int getNonObsoleteCount()

Returns the number of non-obsolete LN and IN entries.

reset

public void reset()

Reset all totals to zero.

add

public void add(DbFileSummary o)

Add the totals of the given summary object to the totals of this object.

getLogSize

public int getLogSize()

Specified by:

getLogSize in interface Loggable

Returns:

number of bytes used to store this object.

See Also:

Loggable.getLogSize()

writeToLog

public void writeToLog(java.nio.ByteBuffer buf)

Description copied from interface: Loggable

Serialize this object into the buffer.

Specified by:

writeToLog in interface Loggable

Parameters:

buf - is the destination buffer

See Also:

Loggable.writeToLog(java.nio.ByteBuffer)

readFromLog

public void readFromLog(java.nio.ByteBuffer buf,
               byte entryTypeVersion)

Description copied from interface: Loggable

Initialize this object from the data in itemBuf.

Specified by:

readFromLog in interface Loggable

See Also:

Loggable.readFromLog(java.nio.ByteBuffer, byte)

dumpLog

public void dumpLog(java.lang.StringBuffer buf,
           boolean verbose)

Description copied from interface: Loggable

Write the object into the string buffer for log dumping. Each object should be dumped without indentation or new lines and should be valid XML.

Specified by:

dumpLog in interface Loggable

Parameters:

buf - destination string buffer

verbose - if true, dump the full, verbose version

See Also:

Loggable.dumpLog(java.lang.StringBuffer, boolean)

getTransactionId

public long getTransactionId()

Never called.

Specified by:

getTransactionId in interface Loggable

Returns:

the transaction id embedded within this loggable object. Objects that have no transaction id should return 0.

See Also:

Loggable.getTransactionId()

logicalEquals

public boolean logicalEquals(Loggable other)

Specified by:

logicalEquals in interface Loggable

Returns:

true if these two loggable items are logically the same. Used for replication testing.

See Also:

Always return false, this item should never be compared.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object