Examples of com.hazelcast.core.IMap.addIndex()

com.hazelcast.core.IMap.addIndex()
r fields. // getters setter }
If you are querying your values mostly based on age and active then you should consider indexing these fields.
```
 IMap imap = Hazelcast.getMap("employees"); imap.addIndex("age", true);        // ordered, since we have ranged queries for this field imap.addIndex("active", false);    // not ordered, because boolean field cannot have range 
```
Index attribute should either have a getter method or be public. You should also make sure to add the indexes before adding entries to this map. @param attribute attribute of value @param ordered true if index should be ordered,false otherwise.

        TestHazelcastInstanceFactory nodeFactory = createHazelcastInstanceFactory(4);
        HazelcastInstance h1 = nodeFactory.newHazelcastInstance();
        IMap imap = h1.getMap("employees");
        imap.addIndex("name", false);
        imap.addIndex("age", true);
        imap.addIndex("active", false);
        for (int i = 0; i < 50; i++) {
            Map temp = new HashMap(10);
            for (int j = 0; j < 10; j++) {
                String key = String.valueOf((i * 100000) + j);
                temp.put(key, new Employee("name" + key, i % 60, ((i & 1) == 1), (double) i));

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    public void testTwoNodesWithPartialIndexes() 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("age", true);
        imap.addIndex("active", false);
        for (int i = 0; i < 500; 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);

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        TestHazelcastInstanceFactory nodeFactory = createHazelcastInstanceFactory(2);
        HazelcastInstance h1 = nodeFactory.newHazelcastInstance();
        HazelcastInstance h2 = nodeFactory.newHazelcastInstance();
        IMap imap = h1.getMap("employees");
        imap.addIndex("name", false);
        imap.addIndex("age", true);
        imap.addIndex("active", false);
        for (int i = 0; i < 500; 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);
        }

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        HazelcastInstance h1 = nodeFactory.newHazelcastInstance();
        HazelcastInstance h2 = nodeFactory.newHazelcastInstance();
        IMap imap = h1.getMap("employees");
        imap.addIndex("name", false);
        imap.addIndex("age", true);
        imap.addIndex("active", false);
        for (int i = 0; i < 500; 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());

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            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("age", true);
        imap.addIndex("active", false);
        Collection<Employee> entries = imap.values(new SqlPredicate("name='name3' and city='city3' and age > 2"));
        assertEquals(5, entries.size());
        for (Employee e : entries) {

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        }
        assertEquals(2, h1.getCluster().getMembers().size());
        assertEquals(2, h2.getCluster().getMembers().size());
        imap = h2.getMap("employees");
        imap.addIndex("name", 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(5, entries.size());
        for (Employee e : entries) {
            assertEquals("name3", e.getName());

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        assertEquals(2, h1.getCluster().getMembers().size());
        assertEquals(2, h2.getCluster().getMembers().size());
        imap = h2.getMap("employees");
        imap.addIndex("name", 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(5, entries.size());
        for (Employee e : entries) {
            assertEquals("name3", e.getName());
            assertEquals("city3", e.getCity());

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    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);

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        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);

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        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);
        }

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