ListenerExample.java

package com.hazelcast.examples;

import javax.cache.Cache;
import javax.cache.CacheManager;
import javax.cache.configuration.CacheEntryListenerConfiguration;
import javax.cache.configuration.FactoryBuilder;
import javax.cache.configuration.MutableCacheEntryListenerConfiguration;

import static com.hazelcast.examples.helper.CommonUtils.sleepSeconds;

/**
 * Listener example.
 *
 * Simple example how to register an async listener and
 * execute cache operations to see on console thath events are firing
 */
public class ListenerExample extends AbstractApp {

    private void runApp() {
        // initialize the CacheManager
        final CacheManager cacheManager = initCacheManager();

        // create a cache with the provided name
        final Cache<String, Integer> cache = initCache("theCache", cacheManager);

        // register the CacheEntryListener
        registerListener(cache);

        // do some operations on the cache to cause event fire
        triggerEvents(cache);

        // wait for 5 sec to make sure every event has fired
        sleepSeconds(5);

        // shutdown the CacheManager
        shutdown();
    }

    private void registerListener(Cache<String, Integer> cache) {
        // create the EntryListener
        MyCacheEntryListener<String, Integer> clientListener = new MyCacheEntryListener<String, Integer>();

        // using our listener, let's create a configuration
        CacheEntryListenerConfiguration<String, Integer> conf = new MutableCacheEntryListenerConfiguration<String, Integer>(
                FactoryBuilder.factoryOf(clientListener), null, true, false);

        // register it to the cache at run-time
        cache.registerCacheEntryListener(conf);
    }

    private void triggerEvents(Cache<String, Integer> cache) {
        // this will fire create event
        cache.put("theKey", 66);

        // but this one will fire an update event as we have it already
        cache.put("theKey", 111);

        // fire remove
        cache.remove("theKey");

        // put a value and then access it to start an expiry
        cache.put("theKey", 66);
        cache.get("theKey");

        // wait for 10 sec to expire the content
        sleepSeconds(10);

        // will force to expire if we access it and fire expire event
        cache.get("theKey");
    }

    public static void main(String[] args) {
        new ListenerExample().runApp();
    }
}