Package org.apache.derby.iapi.services.cache

Class ClassSizeCatalog

java.lang.Object

java.util.Dictionary<String,int[]>

java.util.Hashtable<String,int[]>

org.apache.derby.iapi.services.cache.ClassSizeCatalog

All Implemented Interfaces:

Serializable, Cloneable, Map<String,int[]>

abstract class ClassSizeCatalog
extends Hashtable<String,int[]>

Map from class names to size coefficients. The size coefficients can be used to estimate how much memory an instance of the class takes.

See Also:

• ClassSize.getSizeCoefficients(Class)

Field Summary

Fields

Modifier and Type	Field	Description
private static final ClassSizeCatalog	INSTANCE	The singleton instance of this class.

Constructor Summary

Constructors

Constructor	Description
ClassSizeCatalog()

Method Summary

Modifier and Type	Method	Description
(package private) static ClassSizeCatalog	getInstance()	Get the singleton ClassSizeCatalog instance.

Methods inherited from class java.util.Hashtable

clear, clone, compute, computeIfAbsent, computeIfPresent, contains, containsKey, containsValue, elements, entrySet, equals, forEach, get, getOrDefault, hashCode, isEmpty, keys, keySet, merge, put, putAll, putIfAbsent, rehash, remove, remove, replace, replace, replaceAll, size, toString, values

Methods inherited from class java.lang.Object

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

Field Details

INSTANCE

private static final ClassSizeCatalog INSTANCE

The singleton instance of this class.

Constructor Details

ClassSizeCatalog

ClassSizeCatalog()

Method Details

getInstance

static ClassSizeCatalog getInstance()

Get the singleton ClassSizeCatalog instance.