Examples of com.hazelcast.core.IMap

com.hazelcast.core.IMap
Concurrent, distributed, observable and queryable map.

This class is not a general-purpose ConcurrentMap implementation! While this class implements the Map interface, it intentionally violates Map's general contract, which mandates the use of the equals method when comparing objects. Instead of the equals method this implementation compares the serialized byte version of the objects.

Gotchas:
- Methods, including but not limited to get, containsKey, containsValue, evict, remove, put, putIfAbsent, replace, lock, unlock, do not use hashCode and equals implementations of keys, instead they use hashCode and equals of binary (serialized) forms of the objects.
- get method returns a clone of original values, modifying the returned value does not change the actual value in the map. One should put modified value back to make changes visible to all nodes. For additional info see {@link IMap#get(Object)}.
- Methods, including but not limited to keySet, values, entrySet, return a collection clone of the values. The collection is NOT backed by the map, so changes to the map are NOT reflected in the collection, and vice-versa.
This class does not allow null to be used as a key or value.
@param < K> key @param < V> value @see java.util.concurrent.ConcurrentMap

        assertEquals(size, stats.getHits());
    }


    @Test
    public void testGetAsyncPopulatesNearCache() throws Exception {
        final IMap map = client.getMap(randomMapName(NEAR_CACHE_WITH_NO_INVALIDATION));


        int size = 1239;
        for (int i = 0; i < size; i++) {
            map.put(i, i);
        }
        //populate near cache
        for (int i = 0; i < size; i++) {
            Future async = map.getAsync(i);
            async.get();
        }
        //generate near cache hits
        for (int i = 0; i < size; i++) {
            map.get(i);
        }
        NearCacheStats stats = map.getLocalMapStats().getNearCacheStats();
        assertEquals(size, stats.getOwnedEntryCount());
    }

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        assertEquals(size, stats.getOwnedEntryCount());
    }


    @Test
    public void testRemovedKeyValueNotInNearCache() throws Exception {
        final IMap map = client.getMap(randomMapName(NEAR_CACHE_WITH_INVALIDATION));


        int size = 1247;
        populateNearCache(map, size);


        for (int i = 0; i < size; i++) {
            map.remove(i);
            assertNull(map.get(i));
        }
    }

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        }
    }


    @Test
    public void testNearCachePopulatedAndHitsGenerated() throws Exception {
        final IMap map = client.getMap(randomMapName(NEAR_CACHE_WITH_NO_INVALIDATION));


        final int size = 1278;
        for (int i = 0; i < size; i++) {
            map.put(i, i);
            map.get(i);  //populate near cache
            map.get(i);  //generate near cache hits
        }


        NearCacheStats stats = map.getLocalMapStats().getNearCacheStats();
        System.out.println("stats = " + stats);
        assertEquals(size, stats.getOwnedEntryCount());
        assertEquals(size, stats.getHits());
    }

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        assertEquals(size, stats.getHits());
    }


    @Test
    public void testNearCachePopulatedAndHitsGenerated2() throws Exception {
        final IMap map = client.getMap(randomMapName(NEAR_CACHE_WITH_NO_INVALIDATION));


        final int size = 1278;
        populateNearCache(map, size);


        for (int i = 0; i < size; i++) {
            map.get(i);  //generate near cache hits
        }


        NearCacheStats stats = map.getLocalMapStats().getNearCacheStats();
        System.out.println("stats = " + stats);
        assertEquals(size, stats.getOwnedEntryCount());
        assertEquals(size, stats.getHits());
    }

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        assertEquals(size, stats.getHits());
    }


    @Test
    public void testIssue2009() throws Exception {
        final IMap map = client.getMap(randomMapName(NEAR_CACHE_WITH_INVALIDATION));
        NearCacheStats stats = map.getLocalMapStats().getNearCacheStats();
        assertNotNull(stats);
    }

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        assertNotNull(stats);
    }


    @Test
    public void testGetNearCacheStatsBeforePopulation() {
        final IMap map = client.getMap(randomMapName(NEAR_CACHE_WITH_NO_INVALIDATION));
        final int size = 101;
        for (int i = 0; i < size; i++) {
            map.put(i, i);
        }
        final NearCacheStats stats = map.getLocalMapStats().getNearCacheStats();
        assertNotNull(stats);
    }

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        assertNotNull(stats);
    }


    @Test
    public void testNearCacheMisses() {
        final IMap map = client.getMap(randomMapName(NEAR_CACHE_WITH_NO_INVALIDATION));


        final int size = 1321;
        for (int i = 0; i < size; i++) {
            map.get("NotThere" + i);
        }
        NearCacheStats stats = map.getLocalMapStats().getNearCacheStats();
        assertEquals(size, stats.getMisses());
        assertEquals(size, stats.getOwnedEntryCount());
    }

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        assertEquals(size, stats.getOwnedEntryCount());
    }


    @Test
    public void testNearCacheMisses_whenRepeatedOnSameKey() {
        final IMap map = client.getMap(randomMapName(NEAR_CACHE_WITH_INVALIDATION));


        final int size = 17;
        for (int i = 0; i < size; i++) {
            map.get("NOT_THERE");
        }


        NearCacheStats stats = map.getLocalMapStats().getNearCacheStats();
        assertEquals(1, stats.getOwnedEntryCount());
        assertEquals(size, stats.getMisses());
    }

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        assertEquals(size, stats.getMisses());
    }


    @Test
    public void testMapRemove_WithNearCache() {
        final IMap map = client.getMap(randomMapName(NEAR_CACHE_WITH_INVALIDATION));


        final int size = 1113;
        populateNearCache(map, size);


        for (int i = 0; i < size; i++) {
            map.remove(i);
        }


        NearCacheStats stats = map.getLocalMapStats().getNearCacheStats();
        assertEquals(size, stats.getMisses());
        assertEquals(0, stats.getOwnedEntryCount());
    }

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        assertEquals(0, stats.getOwnedEntryCount());
    }


    @Test
    public void testNearCacheMaxSize() {
        final IMap map = client.getMap(randomMapName(NEAR_CACHE_WITH_MAX_SIZE));


        populateNearCache(map, MAX_CACHE_SIZE + 1);


        HazelcastTestSupport.assertTrueEventually(new AssertTask() {
            @Override
            public void run() throws Exception {
                final NearCacheStats stats = map.getLocalMapStats().getNearCacheStats();
                assertTrue(MAX_CACHE_SIZE > stats.getOwnedEntryCount());
            }
        });
    }

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com.hazelcast.client.ClientRegressionTest

com.hazelcast.client.executor.ClientExecutorServiceSubmitTest

com.hazelcast.client.impl.client.txn.ClientTxnMapTest

com.hazelcast.client.impl.client.txn.ClientXaTest

com.hazelcast.client.map.ClientMapBasicTest

com.hazelcast.client.map.ClientMapNearCacheTest

com.hazelcast.client.map.ClientMapStoreTest

com.hazelcast.client.map.ClientMapTest

com.hazelcast.core.standalone.AllTest

com.hazelcast.examples.AllTest

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