com.sleepycat.client

Class SHashStats

java.lang.Object

com.sleepycat.client.SHashStats

All Implemented Interfaces:

SDatabaseStats

public class SHashStats
extends java.lang.Object
implements SDatabaseStats

The SHashStats object is used to return Hash database statistics.

Method Summary

Modifier and Type	Method and Description
long	getBFree() The number of bytes free on bucket pages.
long	getBigBFree() The number of bytes free on hash overflow (big item) pages.
int	getBigPages() The number of hash overflow pages (created when key/data is too big for the page).
int	getBuckets() The number of hash buckets.
int	getDup() The number of duplicate pages.
long	getDupFree() The number of bytes free on duplicate pages.
int	getExtFiles() The number of external files.
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	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 bucket overflow pages (bucket overflow pages are created when items did not fit on the main bucket page).
long	getOvflFree() The number of bytes free on bucket 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.
java.lang.String	toString() For convenience, the SHashStats 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 Detail

getBFree

public long getBFree()

The number of bytes free on bucket pages.

The information is only included if the SDatabase.getStats(com.sleepycat.client.STransaction, com.sleepycat.client.SStatsConfig) call was not configured by the SStatsConfig.setFast(boolean) method.

Returns:

the number of bytes free on bucket pages

getBigBFree

public long getBigBFree()

The number of bytes free on hash overflow (big item) pages.

The information is only included if the SDatabase.getStats(com.sleepycat.client.STransaction, com.sleepycat.client.SStatsConfig) call was not configured by the SStatsConfig.setFast(boolean) method.

Returns:

the number of bytes free on hash overflow pages

getBigPages

public int getBigPages()

The number of hash overflow pages (created when key/data is too big for the page).

The information is only included if the SDatabase.getStats(com.sleepycat.client.STransaction, com.sleepycat.client.SStatsConfig) call was not configured by the SStatsConfig.setFast(boolean) method.

Returns:

the number of hash overflow pages

getBuckets

public int getBuckets()

The number of hash buckets.

Returns:

the number of hash bucketes

getDup

public int getDup()

The number of duplicate pages.

The information is only included if the SDatabase.getStats(com.sleepycat.client.STransaction, com.sleepycat.client.SStatsConfig) call was not configured by the SStatsConfig.setFast(boolean) method.

Returns:

the number of duplicate pages

getDupFree

public long getDupFree()

The number of bytes free on duplicate pages.

The information is only included if the SDatabase.getStats(com.sleepycat.client.STransaction, com.sleepycat.client.SStatsConfig) call was not configured by the SStatsConfig.setFast(boolean) method.

Returns:

the number of bytes free on duplicate pages

getFfactor

public int getFfactor()

The desired fill factor specified at database-creation time.

Returns:

the desired fill factor specified at database-creation time

getFree

public int getFree()

The number of pages on the free list.

The information is only included if the SDatabase.getStats(com.sleepycat.client.STransaction, com.sleepycat.client.SStatsConfig) call was not configured by the SStatsConfig.setFast(boolean) method.

Returns:

the number of pages on the free list

getMagic

public int getMagic()

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

Returns:

the magic number that identifies the file as a Hash file

getExtFiles

public int getExtFiles()

The number of external files.

Returns:

the number of external files

getNumData

public int getNumData()

The number of key/data pairs in the database.

If the SDatabase.getStats(com.sleepycat.client.STransaction, com.sleepycat.client.SStatsConfig) call was configured by the SStatsConfig.setFast(boolean) method, the count will be the last saved value unless it has never been calculated, in which case it will be 0.

Returns:

the number of key/data pairs in the database

getNumKeys

public int getNumKeys()

The number of unique keys in the database.

If the SDatabase.getStats(com.sleepycat.client.STransaction, com.sleepycat.client.SStatsConfig) call was configured by the SStatsConfig.setFast(boolean) method, the count will be the last saved value unless it has never been calculated, in which case it will be 0.

Returns:

the number of unique keys in the database

getOverflows

public int getOverflows()

The number of bucket overflow pages (bucket overflow pages are created when items did not fit on the main bucket page).

The information is only included if the SDatabase.getStats(com.sleepycat.client.STransaction, com.sleepycat.client.SStatsConfig) call was not configured by the SStatsConfig.setFast(boolean) method.

Returns:

the number of bucket overflow pages

getOvflFree

public long getOvflFree()

The number of bytes free on bucket overflow pages.

The information is only included if the SDatabase.getStats(com.sleepycat.client.STransaction, com.sleepycat.client.SStatsConfig) call was not configured by the SStatsConfig.setFast(boolean) method.

Returns:

the number of bytes free on bucket overflow pages

getPageCount

public int getPageCount()

The number of pages in the database.

Returns:

the number of pages in the database

getPageSize

public int getPageSize()

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

Returns:

the underlying Hash database page size, in bytes

getVersion

public int getVersion()

The version of the Hash database.

Returns:

the version of the Hash database

toString

public java.lang.String toString()

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

Overrides:

toString in class java.lang.Object

Returns:

a String that lists all fields