Class MapCache<K,V>

java.lang.Object

java.util.AbstractMap<K,V>

java.util.HashMap<K,V>

java.util.LinkedHashMap<K,V>

edu.umd.cs.findbugs.util.MapCache<K,V>

All Implemented Interfaces:

Serializable, Cloneable, Map<K,V>, SequencedMap<K,V>

Direct Known Subclasses:

ProfilingMapCache

public class MapCache<K,V>
extends LinkedHashMap<K,V>

Provide a HashMap that can only grow to a specified maximum capacity, with entries discarded using a LRU policy to keep the size of the HashMap within that bound.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class AbstractMap

AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>

Field Summary

Fields

Modifier and Type	Field	Description
(package private) int	maxCapacity
private static final long	serialVersionUID

Constructor Summary

Constructors

Constructor	Description
MapCache(int maxCapacity)	Create a new MapCache

Method Summary

Modifier and Type	Method	Description
protected boolean	removeEldestEntry(Map.Entry<K,V> eldest)

Methods inherited from class LinkedHashMap

clear, containsValue, entrySet, forEach, get, getOrDefault, keySet, newLinkedHashMap, putFirst, putLast, replaceAll, reversed, sequencedEntrySet, sequencedKeySet, sequencedValues, values

Methods inherited from class HashMap

clone, compute, computeIfAbsent, computeIfPresent, containsKey, isEmpty, merge, newHashMap, put, putAll, putIfAbsent, remove, remove, replace, replace, size

Methods inherited from class AbstractMap

equals, hashCode, toString

Methods inherited from class Object

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

Methods inherited from interface Map

compute, computeIfAbsent, computeIfPresent, containsKey, equals, hashCode, isEmpty, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, size

Methods inherited from interface SequencedMap

firstEntry, lastEntry, pollFirstEntry, pollLastEntry

Field Details

serialVersionUID

private static final long serialVersionUID

See Also:

• Constant Field Values

maxCapacity

int maxCapacity

Constructor Details

MapCache

public MapCache(int maxCapacity)

Create a new MapCache

Parameters:

maxCapacity - - maximum number of entries in the map

Method Details

removeEldestEntry

protected boolean removeEldestEntry(Map.Entry<K,V> eldest)

Overrides:

removeEldestEntry in class LinkedHashMap<K,V>