com.sleepycat.db
Class HashStats

java.lang.Object
  com.sleepycat.db.DatabaseStats
      com.sleepycat.db.HashStats

public class HashStats

extends DatabaseStats

The HashStats object is used to return Hash database statistics.

Method Summary

int	getBFree() The number of bytes free on bucket pages.
int	getBigBFree() The number of bytes free on big item pages.
int	getBigPages() The number of big key/data pages.
int	getBuckets() The the number of hash buckets.
int	getDup() The number of duplicate pages.
int	getDupFree() The number of bytes free on duplicate pages.
int	getFfactor() The desired fill factor specified at database-creation time.
int	getFree() The number of pages on the free list.
int	getMagic() The magic number that identifies the file as a Hash file.
int	getMetaFlags() The metadata flags.
int	getNumData() The number of key/data pairs in the database.
int	getNumKeys() The number of unique keys in the database.
int	getOverflows() The number of overflow pages.
int	getOvflFree() The number of bytes free on overflow pages.
int	getPageSize() The underlying Hash database page (and bucket) size, in bytes.
int	getVersion() The version of the Hash database.
String	toString() For convenience, the HashStats class has a toString method that lists all the data fields.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

getMagic

public int getMagic()

The magic number that identifies the file as a Hash file.

getVersion

public int getVersion()

The version of the Hash database.

getMetaFlags

public int getMetaFlags()

The metadata flags.

getNumKeys

public int getNumKeys()

The number of unique keys in the database.

If the Database.getStats call was configured by the StatsConfig.setFast method, the count will be the last saved value unless it has never been calculated, in which case it will be 0.

getNumData

public int getNumData()

The number of key/data pairs in the database.

If the Database.getStats call was configured by the StatsConfig.setFast method, the count will be the last saved value unless it has never been calculated, in which case it will be 0.

getPageSize

public int getPageSize()

The underlying Hash database page (and bucket) size, in bytes.

getFfactor

public int getFfactor()

The desired fill factor specified at database-creation time.

getBuckets

public int getBuckets()

The the number of hash buckets.

getFree

public int getFree()

The number of pages on the free list.

The information is only included if the Database.getStats call was not configured by the StatsConfig.setFast method.

getBFree

public int getBFree()

The number of bytes free on bucket pages.

The information is only included if the Database.getStats call was not configured by the StatsConfig.setFast method.

getBigPages

public int getBigPages()

The number of big key/data pages.

The information is only included if the Database.getStats call was not configured by the StatsConfig.setFast method.

getBigBFree

public int getBigBFree()

The number of bytes free on big item pages.

The information is only included if the Database.getStats call was not configured by the StatsConfig.setFast method.

getOverflows

public int getOverflows()

The number of overflow pages.

The information is only included if the Database.getStats call was not configured by the StatsConfig.setFast method.

getOvflFree

public int getOvflFree()

The number of bytes free on overflow pages.

The information is only included if the Database.getStats call was not configured by the StatsConfig.setFast method.

getDup

public int getDup()

The number of duplicate pages.

The information is only included if the Database.getStats call was not configured by the StatsConfig.setFast method.

getDupFree

public int getDupFree()

The number of bytes free on duplicate pages.

The information is only included if the Database.getStats call was not configured by the StatsConfig.setFast method.

toString

public String toString()

For convenience, the HashStats class has a toString method that lists all the data fields.