Package org.springframework.binding.collection

Interface SharedMap<K,V>

All Superinterfaces:

Map<K,V>

All Known Implementing Classes:

HttpServletContextMap, HttpSessionMap, SharedMapDecorator

public interface SharedMap<K,V>
extends Map<K,V>

A simple subinterface of Map that exposes a mutex that application code can synchronize on.

Expected to be implemented by Maps that are backed by shared objects that require synchronization between multiple threads. An example would be the HTTP session map.

Author:

Keith Donald

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K extends Object,V extends Object>

Method Summary

Modifier and Type	Method	Description
Object	getMutex()	Returns the shared mutex that may be synchronized on using a synchronized block.

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 Details

getMutex

Object getMutex()

Returns the shared mutex that may be synchronized on using a synchronized block. The returned mutex is guaranteed to be non-null. Example usage:

 synchronized (sharedMap.getMutex()) {
        // do synchronized work
 }
 

Returns:

the mutex