org.redisson.api.RDeque Java Examples

/** 
 * RDeque ӳ��Ϊ redis server �� list���� 
 * ˫�˶���--��ͷ�Ͷ�β������ӻ����Ƴ���Ҳ��ѭ���е������ȳ� 
 *  redis server ����: 
 * �鿴���м�---->keys * 
 * �鿴key������--->type testDeque 
 * �鿴key��ֵ ---->lrange testDeque 0 10   
 */  
@Test  
public void testGetRDeque() {  
    RDeque<Integer> rDeque=RedissionUtils.getInstance().getRDeque(redisson, "testDeque");  
    //���˫�˶���  
    rDeque.clear();  
    Collection<Integer> c=Arrays.asList(12,45,12,34,56,78);  
    rDeque.addAll(c);  
    //��ͷ���Ԫ��  
    rDeque.addFirst(100);  
    //��β���Ԫ��  
    rDeque.addLast(200);  
    System.out.println(Arrays.toString(rDeque.toArray()));  
    //�鿴��ͷԪ��  
    System.out.println(rDeque.peek());  
    System.out.println(rDeque.peekFirst());  
    //�鿴��βԪ��  
    System.out.println(rDeque.peekLast());  
    System.out.println(Arrays.toString(rDeque.toArray()));  
    //�Ƴ���ͷԪ��  
    System.out.println(rDeque.poll());  
    System.out.println(rDeque.pollFirst());  
    //�Ƴ���βԪ��  
    System.out.println(rDeque.pollLast());  
    System.out.println(Arrays.toString(rDeque.toArray()));  
    //��Ӷ�βԪ��  
    System.out.println(rDeque.offer(300));  
    System.out.println(rDeque.offerFirst(400));  
    System.out.println(Arrays.toString(rDeque.toArray()));  
    //�Ƴ���ͷԪ��  
    System.out.println(rDeque.pop());  
    //��ʾ˫�˶��е�Ԫ��  
    System.out.println(Arrays.toString(rDeque.toArray()));  
      
}
 

@Test
public void testRemoveLastOccurrence() {
    RDeque<Integer> queue1 = redisson.getDeque("deque1");
    queue1.addFirst(3);
    queue1.addFirst(1);
    queue1.addFirst(2);
    queue1.addFirst(3);

    queue1.removeLastOccurrence(3);

    assertThat(queue1).containsExactly(3, 2, 1);
}
 

@Test
public void testRemoveFirstOccurrence() {
    RDeque<Integer> queue1 = redisson.getDeque("deque1");
    queue1.addFirst(3);
    queue1.addFirst(1);
    queue1.addFirst(2);
    queue1.addFirst(3);

    queue1.removeFirstOccurrence(3);

    assertThat(queue1).containsExactly(2, 1, 3);
}
 

@Test
public void testRemoveLast() {
    RDeque<Integer> queue1 = redisson.getDeque("deque1");
    queue1.addFirst(1);
    queue1.addFirst(2);
    queue1.addFirst(3);

    Assert.assertEquals(1, (int)queue1.removeLast());
    Assert.assertEquals(2, (int)queue1.removeLast());
    Assert.assertEquals(3, (int)queue1.removeLast());
}
 

@Test
public void testRemoveFirst() {
    RDeque<Integer> queue1 = redisson.getDeque("deque1");
    queue1.addFirst(1);
    queue1.addFirst(2);
    queue1.addFirst(3);

    Assert.assertEquals(3, (int)queue1.removeFirst());
    Assert.assertEquals(2, (int)queue1.removeFirst());
    Assert.assertEquals(1, (int)queue1.removeFirst());
}
 

@Test
public void testPeek() {
    RDeque<Integer> queue1 = redisson.getDeque("deque1");
    Assert.assertNull(queue1.peekFirst());
    Assert.assertNull(queue1.peekLast());
    queue1.addFirst(2);
    Assert.assertEquals(2, (int)queue1.peekFirst());
    Assert.assertEquals(2, (int)queue1.peekLast());
}
 

@Test
public void testPollLastAndOfferFirstTo() {
    RDeque<Integer> queue1 = redisson.getDeque("deque1");
    queue1.addFirst(3);
    queue1.addFirst(2);
    queue1.addFirst(1);

    RDeque<Integer> queue2 = redisson.getDeque("deque2");
    queue2.addFirst(6);
    queue2.addFirst(5);
    queue2.addFirst(4);

    queue1.pollLastAndOfferFirstTo(queue2.getName());
    assertThat(queue2).containsExactly(3, 4, 5, 6);
}
 

@Test
public void testAddFirst() {
    RDeque<Integer> queue = redisson.getDeque("deque");
    queue.addFirst(1);
    queue.addFirst(2);
    queue.addFirst(3);

    assertThat(queue).containsExactly(3, 2, 1);
}
 

@Test
public void testAddLast() {
    RDeque<Integer> queue = redisson.getDeque("deque");
    queue.addLast(1);
    queue.addLast(2);
    queue.addLast(3);

    assertThat(queue).containsExactly(1, 2, 3);
}
 

@Test
public void testOfferFirst() {
    RDeque<Integer> queue = redisson.getDeque("deque");
    queue.offerFirst(1);
    queue.offerFirst(2);
    queue.offerFirst(3);

    assertThat(queue).containsExactly(3, 2, 1);
}
 

@Test
public void testDescendingIterator() {
    final RDeque<Integer> queue = redisson.getDeque("deque");
    queue.addAll(Arrays.asList(1, 2, 3));

    assertThat(queue.descendingIterator()).toIterable().containsExactly(3, 2, 1);
}
 

@Override
public <V> RDeque<V> getDeque(String name) {
  return new TracingRDeque<>(redissonClient.getDeque(name), tracingRedissonHelper);
}
 

@Override
public <V> RDeque<V> getDeque(String name, Codec codec) {
  return new TracingRDeque<>(redissonClient.getDeque(name, codec), tracingRedissonHelper);
}
 

public TracingRDeque(RDeque<V> deque, TracingRedissonHelper tracingRedissonHelper) {
  super(deque, tracingRedissonHelper);
  this.deque = deque;
  this.tracingRedissonHelper = tracingRedissonHelper;
}
 

public static void main(String[] args) {
    // connects to 127.0.0.1:6379 by default
    RedissonClient redisson = Redisson.create();

    RDeque<String> deque = redisson.getDeque("myQueue");
    deque.add("1");
    deque.add("2");
    deque.add("3");
    deque.add("4");
    
    deque.contains("1");
    deque.peek();
    deque.poll();
    deque.element();
    
    for (String string : deque) {
        // iteration through bulk loaded values
    }
    
    boolean removedValue = deque.remove("1");
    deque.removeAll(Arrays.asList("1", "2", "3"));
    deque.containsAll(Arrays.asList("4", "1", "0"));
    
    List<String> secondList = new ArrayList<>();
    secondList.add("4");
    secondList.add("5");
    deque.addAll(secondList);

    RQueue<String> secondQueue = redisson.getQueue("mySecondQueue");
    
    deque.pollLastAndOfferFirstTo(secondQueue.getName());
    
    deque.addLast("8");
    deque.addFirst("9");
    
    deque.addLast("30");
    deque.addFirst("80");
    
    String firstValue = deque.pollFirst();
    String lastValue = deque.pollLast();
    
    String peekFirstValue = deque.peekFirst();
    String peekLastValue = deque.peekLast();
    
    String firstRemoved = deque.removeFirst();
    String lastRemoved = deque.removeLast();
    
    redisson.shutdown();
}
 

/** 
 * ��ȡ˫�˶��� 
 * @param redisson 
 * @param objectName 
 * @return 
 */  
public <V> RDeque<V> getRDeque(RedissonClient redisson,String objectName){  
    RDeque<V> rDeque=redisson.getDeque(objectName);  
    return rDeque;  
}