com.sleepycat.db
Class DbHashStat

java.lang.Object
  |
  +--com.sleepycat.db.DbHashStat

public class DbHashStat

extends Object

The DbHashStat object is used to return Hash database statistics.

Field Summary

int	hash_bfree The number of bytes free on bucket pages.
int	hash_big_bfree The number of bytes free on big item pages.
int	hash_bigpages The number of big key/data pages.
int	hash_buckets The number of hash buckets.
int	hash_dup The number of duplicate pages.
int	hash_dup_free The number of bytes free on duplicate pages.
int	hash_ffactor The desired fill factor (number of items per bucket) specified at database-creation time.
int	hash_free The number of pages on the free list.
int	hash_magic Magic number that identifies the file as a Hash file.
int	hash_metaflags
int	hash_ndata The number of key/data pairs in the database.
int	hash_nkeys The number of unique keys in the database.
int	hash_overflows The number of overflow pages (overflow pages are pages that contain items that did not fit in the main bucket page).
int	hash_ovfl_free The number of bytes free on overflow pages.
int	hash_pagesize The underlying Hash database page (and bucket) size, in bytes.
int	hash_version The version of the Hash database.

Constructor Summary

DbHashStat()

Method Summary

String

toString() Provide a string representation of all the fields contained within this class.

Methods inherited from class java.lang.Object

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

Field Detail

hash_magic

public int hash_magic

Magic number that identifies the file as a Hash file. Returned if Db.DB_FAST_STAT is set.

hash_version

public int hash_version

The version of the Hash database. Returned if Db.DB_FAST_STAT is set.

hash_metaflags

public int hash_metaflags

hash_nkeys

public int hash_nkeys

The number of unique keys in the database. If Db.DB_FAST_STAT was specified the count will be the last saved value unless it has never been calculated, in which case it will be 0. Returned if Db.DB_FAST_STAT is set.

hash_ndata

public int hash_ndata

The number of key/data pairs in the database. If Db.DB_FAST_STAT was specified the count will be the last saved value unless it has never been calculated, in which case it will be 0. Returned if Db.DB_FAST_STAT is set.

hash_pagesize

public int hash_pagesize

The underlying Hash database page (and bucket) size, in bytes. Returned if Db.DB_FAST_STAT is set.

hash_ffactor

public int hash_ffactor

The desired fill factor (number of items per bucket) specified at database-creation time. Returned if Db.DB_FAST_STAT is set.

hash_buckets

public int hash_buckets

The number of hash buckets. Returned if Db.DB_FAST_STAT is set.

hash_free

public int hash_free

The number of pages on the free list.

hash_bfree

public int hash_bfree

The number of bytes free on bucket pages.

hash_bigpages

public int hash_bigpages

The number of big key/data pages.

hash_big_bfree

public int hash_big_bfree

The number of bytes free on big item pages.

hash_overflows

public int hash_overflows

The number of overflow pages (overflow pages are pages that contain items that did not fit in the main bucket page).

hash_ovfl_free

public int hash_ovfl_free

The number of bytes free on overflow pages.

hash_dup

public int hash_dup

The number of duplicate pages.

hash_dup_free

public int hash_dup_free

The number of bytes free on duplicate pages.

Constructor Detail

DbHashStat

public DbHashStat()

Method Detail

toString

public String toString()

Provide a string representation of all the fields contained within this class.

Overrides:

toString in class Object

Returns:

The string representation.