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

    @Test(timeout = 1000 * 60)
    public void testTwoNodesWithIndexes() throws Exception {
        TestHazelcastInstanceFactory nodeFactory = createHazelcastInstanceFactory(2);
        HazelcastInstance h1 = nodeFactory.newHazelcastInstance();
        HazelcastInstance h2 = nodeFactory.newHazelcastInstance();
        IMap imap = h1.getMap("employees");
        imap.addIndex("name", false);
        imap.addIndex("city", false);
        imap.addIndex("age", true);
        imap.addIndex("active", false);
        for (int i = 0; i < 5000; i++) {
            Employee employee = new Employee(i, "name" + i % 100, "city" + (i % 100), i % 60, ((i & 1) == 1), (double) i);
            imap.put(String.valueOf(i), employee);
        }
        assertEquals(2, h1.getCluster().getMembers().size());
        assertEquals(2, h2.getCluster().getMembers().size());
        imap = h2.getMap("employees");
        imap.addIndex("name", false);
        imap.addIndex("city", false);
        imap.addIndex("age", true);
        imap.addIndex("active", false);
        Collection<Employee> entries = imap.values(new SqlPredicate("name='name3' and city='city3' and age > 2"));
        assertEquals(50, entries.size());
        for (Employee e : entries) {
            assertEquals("name3", e.getName());
            assertEquals("city3", e.getCity());
        }
        entries = imap.values(new SqlPredicate("name LIKE '%name3' and city like '%city3' and age > 2"));
        assertEquals(50, entries.size());
        for (Employee e : entries) {
            assertEquals("name3", e.getName());
            assertEquals("city3", e.getCity());
            assertTrue(e.getAge() > 2);
        }
        entries = imap.values(new SqlPredicate("name LIKE '%name3%' and city like '%city30%'"));
        assertEquals(50, entries.size());
        for (Employee e : entries) {
            assertTrue(e.getName().startsWith("name3"));
            assertTrue(e.getCity().startsWith("city3"));
        }

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        assertEquals(0, map.size());
    }


    @Test
    public void testRemoveIfSame() {
        final IMap map = createMap();
        fillMap(map);
        assertFalse(map.remove("key2", "value"));
        assertEquals(10, map.size());


        assertTrue(map.remove("key2", "value2"));
        assertEquals(9, map.size());
    }

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        assertOpenEventually(flushMapStore.latch, 5);
    }


    @Test
    public void testGetAllPutAll() {
        final IMap map = createMap();
        Map mm = new HashMap();
        for (int i = 0; i < 100; i++) {
            mm.put(i, i);
        }
        map.putAll(mm);
        assertEquals(map.size(), 100);
        for (int i = 0; i < 100; i++) {
            assertEquals(map.get(i), i);
        }


        Set ss = new HashSet();
        ss.add(1);
        ss.add(3);
        Map m2 = map.getAll(ss);
        assertEquals(m2.size(), 2);
        assertEquals(m2.get(1), 1);
        assertEquals(m2.get(3), 3);
    }

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        assertEquals(m2.get(3), 3);
    }


    @Test
    public void testAsyncGet() throws Exception {
        final IMap map = createMap();
        fillMap(map);
        Future f = map.getAsync("key1");
        Object o = f.get();
        assertEquals("value1", o);
    }

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        assertEquals("value1", o);
    }


    @Test
    public void testAsyncPut() throws Exception {
        final IMap map = createMap();
        fillMap(map);
        Future f = map.putAsync("key3", "value");
        Object o = f.get();
        assertEquals("value3", o);
        assertEquals("value", map.get("key3"));
    }

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    @Test(timeout = 1000 * 60)
    public void testOneMemberWithoutIndex() {
        HazelcastInstance h1 = createHazelcastInstance();
        IMap imap = h1.getMap("employees");
        doFunctionalQueryTest(imap);
    }

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    }


    @Test(timeout = 1000 * 60)
    public void testOneMemberWithIndex() {
        HazelcastInstance instance = createHazelcastInstance();
        IMap imap = instance.getMap("employees");
        imap.addIndex("name", false);
        imap.addIndex("age", true);
        imap.addIndex("active", false);
        doFunctionalQueryTest(imap);
    }

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        assertEquals("value", map.get("key3"));
    }


    @Test
    public void testAsyncPutWithTtl() throws Exception {
        final IMap map = createMap();
        final CountDownLatch latch = new CountDownLatch(1);
        map.addEntryListener(new EntryAdapter<String, String>() {
            public void entryEvicted(EntryEvent<String, String> event) {
                latch.countDown();
            }
        }, true);


        Future<String> f1 = map.putAsync("key", "value1", 3, TimeUnit.SECONDS);
        String f1Val = f1.get();
        assertNull(f1Val);
        assertEquals("value1", map.get("key"));


        assertTrue(latch.await(10, TimeUnit.SECONDS));
        assertNull(map.get("key"));
    }

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        assertNull(map.get("key"));
    }


    @Test
    public void testAsyncRemove() throws Exception {
        final IMap map = createMap();
        fillMap(map);
        Future f = map.removeAsync("key4");
        Object o = f.get();
        assertEquals("value4", o);
        assertEquals(9, map.size());
    }

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    }


    @Test(timeout = 1000 * 60)
    public void testOneMemberSQLWithoutIndex() {
        HazelcastInstance h1 = createHazelcastInstance();
        IMap imap = h1.getMap("employees");
        doFunctionalSQLQueryTest(imap);
        Set<Map.Entry> entries = imap.entrySet(new SqlPredicate("active and age>23"));
        assertEquals(27, entries.size());
    }

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