Package 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

    Modifier and Type
    Method
    Description
    int
    getDupPages()
    The number of database duplicate pages.
    long
    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.
    long
    getIntPagesFree()
    The number of bytes free in database internal pages.
    int
    getLeafPages()
    The number of database leaf pages.
    long
    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
    getMetaFlags()
    Reports internal 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.
    long
    getOverPagesFree()
    The number of bytes free in database overflow pages.
    int
    getPageCount()
    The number of pages in the database.
    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

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

  • Method Details

    • 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()
      Reports internal flags. For internal use only.

    • 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.

    • getPageCount

      public int getPageCount()
      The number of pages in the database.

      Returned if StatsConfig.setFast(boolean) was configured.

    • getPageSize

      public int getPageSize()
      The underlying database page size, in bytes.

    • 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 long 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 long 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 long 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 long 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.
      Overrides:
      toString in class Object