ReferenceMap (OpenJPA Utilities Library 4.1.0 API)

All Superinterfaces:

Map

All Known Implementing Classes:

ConcurrentReferenceHashMap, ReferenceHashMap
```
public interface ReferenceMap
extends Map
```
A Map type that can hold its keys, values, or both with weak or soft references.

Author:

Abe White

Nested Class Summary
- Nested classes/interfaces inherited from interface java.util.Map
  Map.Entry<K extends Object,V extends Object>

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`keyExpired(Object value)`	Overridable callback for when a key reference expires.
`void`	`removeExpired()`	Purge stale entries.
`void`	`valueExpired(Object key)`	Overridable callback for when a value reference expires.

Methods inherited from interface java.util.Map
clear, compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, entrySet, equals, forEach, get, getOrDefault, hashCode, isEmpty, keySet, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, replaceAll, size, values

- Method Detail
  - removeExpired
```
void removeExpired()
```
    Purge stale entries.
  - keyExpired
```
void keyExpired(Object value)
```
    Overridable callback for when a key reference expires.
    
    Parameters:
    
    value - the value for the expired key
  - valueExpired
```
void valueExpired(Object key)
```
    Overridable callback for when a value reference expires.
    
    Parameters:
    
    key - the key for the expired value