com.db4o.filestats

Class ClassUsageStats

java.lang.Object

com.db4o.filestats.ClassUsageStats

public class ClassUsageStats
extends java.lang.Object

Statistics for the byte usage for a single class (instances, indices, etc.) in a db4o database file.

Method Summary

Methods

Modifier and Type	Method and Description
long	classIndexUsage()
java.lang.String	className()
long	fieldIndexUsage()
long	miscUsage()
long	slotUsage()
java.lang.String	toString()
long	totalUsage()

Methods inherited from class java.lang.Object

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

Method Detail

className

public java.lang.String className()

Returns:

the name of the persistent class

slotUsage

public long slotUsage()

Returns:

number of bytes used slots containing the actual class instances

classIndexUsage

public long classIndexUsage()

Returns:

number of bytes used for the index of class instances

fieldIndexUsage

public long fieldIndexUsage()

Returns:

number of bytes used for field indexes, if any

miscUsage

public long miscUsage()

Returns:

number of bytes used for features that are specific to this class (ex.: the BTree encapsulated within a BigSet instance)

totalUsage

public long totalUsage()

Returns:

aggregated byte usage for this persistent class

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object