org.cojen.tupl

Class Database.Stats

java.lang.Object

org.cojen.tupl.Database.Stats

All Implemented Interfaces:

Serializable, Cloneable

Enclosing interface:

Database

public static class Database.Stats
extends Object
implements Cloneable, Serializable

Collection of database statistics.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
long	cachedPages
long	cursorCount
long	freePages
long	lockCount
int	openIndexes
int	pageSize
long	totalPages
long	txnCount
long	txnsCreated

Constructor Summary

Constructors

Constructor and Description
Stats()

Method Summary

Modifier and Type	Method and Description
long	cachedPages() Returns the current size of the cache, in pages.
Database.Stats	clone()
long	cursorCount() Returns the amount of cursors which are in a non-reset state.
boolean	equals(Object obj)
long	freePages() Returns the amount of unused pages in the database.
int	hashCode()
long	lockCount() Returns the amount of locks currently allocated.
int	openIndexes() Returns the amount of indexes currently open.
int	pageSize() Returns the allocation page size.
String	toString()
long	totalPages() Returns the total amount of pages in the database.
long	transactionCount() Returns the amount of fully-established transactions which are in a non-reset state.
long	transactionsCreated() Returns the total amount of fully-established transactions created over the life of the database.

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

pageSize

public int pageSize

freePages

public long freePages

totalPages

public long totalPages

cachedPages

public long cachedPages

openIndexes

public int openIndexes

lockCount

public long lockCount

cursorCount

public long cursorCount

txnCount

public long txnCount

txnsCreated

public long txnsCreated

Constructor Detail

Stats

public Stats()

Method Detail

pageSize

public int pageSize()

Returns the allocation page size.

freePages

public long freePages()

Returns the amount of unused pages in the database.

totalPages

public long totalPages()

Returns the total amount of pages in the database.

cachedPages

public long cachedPages()

Returns the current size of the cache, in pages.

openIndexes

public int openIndexes()

Returns the amount of indexes currently open.

lockCount

public long lockCount()

Returns the amount of locks currently allocated. Locks are created as transactions access or modify records, and they are destroyed when transactions exit or reset. An accumulation of locks can indicate that transactions are not being reset properly.

cursorCount

public long cursorCount()

Returns the amount of cursors which are in a non-reset state. An accumulation of cursors can indicate that they are not being reset properly.

transactionCount

public long transactionCount()

Returns the amount of fully-established transactions which are in a non-reset state. This value is unaffected by transactions which make no changes, and it is also unaffected by auto-commit transactions. An accumulation of transactions can indicate that they are not being reset properly.

transactionsCreated

public long transactionsCreated()

Returns the total amount of fully-established transactions created over the life of the database. This value is unaffected by transactions which make no changes, and it is also unaffected by auto-commit transactions. A resurrected transaction can become fully-established again, further increasing the total created value.

clone

public Database.Stats clone()

Overrides:

clone in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object