org.apache.derby.iapi.services.cache

Class ClassSizeCatalog

java.lang.Object

java.util.Dictionary<K,V>

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

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

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.util.Map<java.lang.String,int[]>

abstract class ClassSizeCatalog
extends java.util.Hashtable<java.lang.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 and Description
private static ClassSizeCatalog	INSTANCE The singleton instance of this class.

Constructor Summary

Constructors

Constructor and Description
ClassSizeCatalog()

Method Summary

Modifier and Type	Method and 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 Detail

INSTANCE

private static final ClassSizeCatalog INSTANCE

The singleton instance of this class.

Constructor Detail

ClassSizeCatalog

ClassSizeCatalog()

Method Detail

getInstance

static ClassSizeCatalog getInstance()

Get the singleton ClassSizeCatalog instance.