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| <h2 title="Interface CacheEntryListener" class="title">Interface CacheEntryListener<K,V></h2> |
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| <dl><dt><span class="strong">Type Parameters:</span></dt><dd><code>K</code> - the type of key</dd><dd><code>V</code> - the type of value</dd></dl> |
| <dl> |
| <dt>All Superinterfaces:</dt> |
| <dd><a href="http://download.oracle.com/javase/6/docs/api/java/util/EventListener.html?is-external=true" title="class or interface in java.util">EventListener</a></dd> |
| </dl> |
| <dl> |
| <dt>All Known Subinterfaces:</dt> |
| <dd><a href="../../../javax/cache/event/CacheEntryCreatedListener.html" title="interface in javax.cache.event">CacheEntryCreatedListener</a><K,V>, <a href="../../../javax/cache/event/CacheEntryExpiredListener.html" title="interface in javax.cache.event">CacheEntryExpiredListener</a><K,V>, <a href="../../../javax/cache/event/CacheEntryRemovedListener.html" title="interface in javax.cache.event">CacheEntryRemovedListener</a><K,V>, <a href="../../../javax/cache/event/CacheEntryUpdatedListener.html" title="interface in javax.cache.event">CacheEntryUpdatedListener</a><K,V></dd> |
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| <pre>public interface <span class="strong">CacheEntryListener<K,V></span> |
| extends <a href="http://download.oracle.com/javase/6/docs/api/java/util/EventListener.html?is-external=true" title="class or interface in java.util">EventListener</a></pre> |
| <div class="block">A tagging interface for cache entry listeners. |
| <p> |
| Sub-interfaces exist for the various cache events allowing a listener to be |
| created that implements only those listeners it is interested in. |
| <p> |
| Listeners should be implemented with care. In particular it is important to |
| consider their impact on performance and latency. |
| <p> |
| Listeners: |
| <ul> |
| <li>are fired after the entry is mutated in the cache</li> |
| <li>if synchronous are fired, for a given key, in the order that events |
| occur</li> |
| <li>block the calling thread until the listener returns, |
| where the listener was registered as synchronous</li> |
| <li>that are asynchronous iterate through multiple events with an undefined |
| ordering, except that events on the same key are in the order that the |
| events occur.</li> |
| </ul> |
| Listeners follow the observer pattern. An exception thrown by a |
| listener does not cause the cache operation to fail. |
| <p> |
| Listeners can only throw <a href="../../../javax/cache/event/CacheEntryListenerException.html" title="class in javax.cache.event"><code>CacheEntryListenerException</code></a>. Caching |
| implementations must catch any other <a href="http://download.oracle.com/javase/6/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang"><code>Exception</code></a> from a listener, then |
| wrap and rethrow it as a <a href="../../../javax/cache/event/CacheEntryListenerException.html" title="class in javax.cache.event"><code>CacheEntryListenerException</code></a>. |
| <p> |
| A listener that mutates a cache on the CacheManager may cause a deadlock. |
| Detection and response to deadlocks is implementation specific.</div> |
| <dl><dt><span class="strong">Since:</span></dt> |
| <dd>1.0</dd> |
| <dt><span class="strong">Author:</span></dt> |
| <dd>Yannis Cosmadopoulos, Greg Luck</dd> |
| <dt><span class="strong">See Also:</span></dt><dd><a href="../../../javax/cache/event/CacheEntryCreatedListener.html" title="interface in javax.cache.event"><code>CacheEntryCreatedListener</code></a>, |
| <a href="../../../javax/cache/event/CacheEntryUpdatedListener.html" title="interface in javax.cache.event"><code>CacheEntryUpdatedListener</code></a>, |
| <a href="../../../javax/cache/event/CacheEntryRemovedListener.html" title="interface in javax.cache.event"><code>CacheEntryRemovedListener</code></a>, |
| <a href="../../../javax/cache/event/CacheEntryExpiredListener.html" title="interface in javax.cache.event"><code>CacheEntryExpiredListener</code></a>, |
| <a href="../../../javax/cache/event/EventType.html" title="enum in javax.cache.event"><code>EventType</code></a></dd></dl> |
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