Examples of com.hazelcast.core.MultiMap.lock()

com.hazelcast.core.MultiMap.lock()
Acquires the lock for the specified key.
If the lock is not available then the current thread becomes disabled for thread scheduling purposes and lies dormant until the lock has been acquired.
Scope of the lock is this multimap only. Acquired lock is only for the key in this multimap.
Locks are re-entrant so if the key is locked N times then it should be unlocked N times before another thread can acquire it.

Warning:

This method uses hashCode and equals of binary form of the key, not the actual implementations of hashCode and equals defined in key's class.
@param key key to lock.

    @Test(expected = NullPointerException.class)
    public void testLock_whenNullKey() {
        TestHazelcastInstanceFactory factory = createHazelcastInstanceFactory(1);
        MultiMap multiMap = getMultiMap(factory.newInstances(), randomString());


        multiMap.lock(null);
    }


    @Test(expected = NullPointerException.class)
    public void testUnlock_whenNullKey() {
        TestHazelcastInstanceFactory factory = createHazelcastInstanceFactory(1);

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    @Test
    public void testLock() throws Exception {
        final MultiMap mm = client.getMultiMap(randomString());
        final Object key = "Key";
        mm.lock(key);
        assertTrue(mm.isLocked(key));
    }


    @Test(expected = NullPointerException.class)
    public void testLock_whenKeyNull() throws Exception {

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    }


    @Test(expected = NullPointerException.class)
    public void testLock_whenKeyNull() throws Exception {
        final MultiMap mm = client.getMultiMap(randomString());
        mm.lock(null);
    }


    @Test(expected = NullPointerException.class)
    public void testUnLock_whenNullKey() throws Exception {
        final MultiMap mm = client.getMultiMap(randomString());

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    @Test
    public void testUnLock() throws Exception {
        final MultiMap mm = client.getMultiMap(randomString());
        final Object key = "key";


        mm.lock(key);
        mm.unlock(key);
        assertFalse(mm.isLocked(key));
    }


    @Test

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    @Test
    public void testUnlock_whenRentrantlyLockedBySelf() throws Exception {
        final MultiMap mm = client.getMultiMap(randomString());
        final Object key = "key";


        mm.lock(key);
        mm.lock(key);
        mm.unlock(key);
        assertTrue(mm.isLocked(key));
    }

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    public void testUnlock_whenRentrantlyLockedBySelf() throws Exception {
        final MultiMap mm = client.getMultiMap(randomString());
        final Object key = "key";


        mm.lock(key);
        mm.lock(key);
        mm.unlock(key);
        assertTrue(mm.isLocked(key));
    }


    @Test(expected = IllegalMonitorStateException.class)

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    @Test(expected = IllegalMonitorStateException.class)
    public void testUnlock_whenLockedByOther() throws Exception {
        final MultiMap mm = client.getMultiMap(randomString());
        final Object key = "key";
        mm.lock(key);


        UnLockThread t = new UnLockThread(mm, key);
        t.start();
        assertJoinable(t);
        throw t.exception;

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    @Test
    public void testLock_whenAlreadyLockedBySelf() throws Exception {
        final MultiMap mm = client.getMultiMap(randomString());
        final Object key = "Key";
        mm.lock(key);
        mm.lock(key);
        assertTrue(mm.isLocked(key));
    }


    @Test

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    @Test
    public void testLock_whenAlreadyLockedBySelf() throws Exception {
        final MultiMap mm = client.getMultiMap(randomString());
        final Object key = "Key";
        mm.lock(key);
        mm.lock(key);
        assertTrue(mm.isLocked(key));
    }


    @Test
    public void testTryLock() throws Exception {

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    @Test
    public void testTryLock_whenLockedBySelf() throws Exception {
        final MultiMap mm = client.getMultiMap(randomString());
        final Object key = "Key";
        mm.lock(key);
        assertTrue(mm.tryLock(key));
    }


    @Test
    public void testTryLock_whenLockedByOther() throws Exception {

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