com.sleepycat.db
Class BtreeStats

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

public class BtreeStats

extends DatabaseStats

The BtreeStats object is used to return Btree or Recno database statistics.

Method Summary

int	getDupPages() The number of database duplicate pages.
int	getDupPagesFree() The number of bytes free in database duplicate pages.
int	getEmptyPages() The number of empty database pages.
int	getFree() The number of pages on the free list.
int	getIntPages() The number of database internal pages.
int	getIntPagesFree() The number of bytes free in database internal pages.
int	getLeafPages() The number of database leaf pages.
int	getLeafPagesFree() The number of bytes free in database leaf pages.
int	getLevels() The number of levels in the database.
int	getMagic() The magic number that identifies the file as a Btree database.
int	getMaxKey() The maximum keys per page.
int	getMetaFlags() The metadata flags.
int	getMinKey() The minimum keys per page.
int	getNumData() The number of key/data pairs or records in the database.
int	getNumKeys() The number of keys or records in the database.
int	getOverPages() The number of database overflow pages.
int	getOverPagesFree() The number of bytes free in database overflow pages.
int	getPageSize() The underlying database page size, in bytes.
int	getReLen() The length of fixed-length records.
int	getRePad() The padding byte value for fixed-length records.
int	getVersion() The version of the Btree database.
String	toString() For convenience, the BtreeStats 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 Btree database.

getVersion

public int getVersion()

The version of the Btree database.

getMetaFlags

public int getMetaFlags()

The metadata flags.

getNumKeys

public int getNumKeys()

The number of keys or records in the database.

For the Btree Access Method, the number of keys in the database. If the Database.getStats call was not configured by the StatsConfig.setFast method or the database was configured to support retrieval by record number, the count will be exact. Otherwise, the count will be the last saved value unless it has never been calculated, in which case it will be 0.

For the Recno Access Method, the number of records in the database. If the database was configured with mutable record numbers the count will be exact. Otherwise, if the Database.getStats call was configured by the StatsConfig.setFast method, the count will be exact but will include deleted records; if the Database.getStats call was not configured by the StatsConfig.setFast method, the count will be exact and will not include deleted records.

getNumData

public int getNumData()

The number of key/data pairs or records in the database.

For the Btree Access Method, the number of key/data pairs in the database. If the Database.getStats call was not configured by the StatsConfig.setFast method, the count will be exact. Otherwise, the count will be the last saved value unless it has never been calculated, in which case it will be 0.

For the Recno Access Method, the number of records in the database. If the database was configured with mutable record numbers, the count will be exact. Otherwise, if the Database.getStats call was configured by the StatsConfig.setFast method, the count will be exact but will include deleted records; if the Database.getStats call was not configured by the StatsConfig.setFast method, the count will be exact and will not include deleted records.

getPageSize

public int getPageSize()

The underlying database page size, in bytes.

getMaxKey

public int getMaxKey()

The maximum keys per page.

getMinKey

public int getMinKey()

The minimum keys per page.

getReLen

public int getReLen()

The length of fixed-length records.

getRePad

public int getRePad()

The padding byte value for fixed-length records.

getLevels

public int getLevels()

The number of levels in the database.

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

getIntPages

public int getIntPages()

The number of database internal pages.

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

getLeafPages

public int getLeafPages()

The number of database leaf pages.

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

getDupPages

public int getDupPages()

The number of database duplicate pages.

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

getOverPages

public int getOverPages()

The number of database overflow pages.

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

getEmptyPages

public int getEmptyPages()

The number of empty database pages.

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

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.

getIntPagesFree

public int getIntPagesFree()

The number of bytes free in database internal pages.

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

getLeafPagesFree

public int getLeafPagesFree()

The number of bytes free in database leaf pages.

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

getDupPagesFree

public int getDupPagesFree()

The number of bytes free in database duplicate pages.

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

getOverPagesFree

public int getOverPagesFree()

The number of bytes free in database overflow 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 BtreeStats class has a toString method that lists all the data fields.