Package 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

    Modifier and Type
    Method
    Description
    long
    getBFree()
    The number of bytes free on bucket pages.
    long
    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.
    long
    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()
    Reports internal 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.
    long
    getOvflFree()
    The number of bytes free on overflow pages.
    int
    getPageCount()
    The number of pages in the database.
    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

    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 Hash file.

    • getVersion

      public int getVersion()
      The version of the Hash database.

    • getMetaFlags

      public int getMetaFlags()
      Reports internal flags. For internal use only.

    • 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.

    • getPageCount

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

      Returned if StatsConfig.setFast(boolean) was configured.

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