Examples of org.springframework.amqp.core.TopicExchange

org.springframework.amqp.core.TopicExchange
Simple container collecting information to describe a topic exchange. Used in conjunction with administrative operations. @author Mark Pollack @author Dave Syer @see AmqpAdmin

      if (params.containsKey(TYPE)) {
        String type = params.containsKey(TYPE) ? params.get(TYPE).toString() : DIRECT;
        if (DIRECT.equals(type)) {
          exchange = new DirectExchange(name, durable, autoDelete, arguments);
        } else if (TOPIC.equals(type)) {
          exchange = new TopicExchange(name, durable, autoDelete, arguments);
        } else if (FANOUT.equals(type)) {
          exchange = new FanoutExchange(name, durable, autoDelete, arguments);
        } else if (HEADERS.equals(type)) {
          exchange = new HeadersExchange(name, durable, autoDelete, arguments);
        } else {

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        } else if("fanout".equals(this.exchangeType)) {
            return new FanoutExchange(this.exchangeName, this.durable, this.autodelete);
        } else if("headers".equals(this.exchangeType)) {
            return new HeadersExchange(this.exchangeName, this.durable, this.autodelete);
        } else if("topic".equals(this.exchangeType)) {
            return new TopicExchange(this.exchangeName, this.durable, this.autodelete);
        //We have a routing key but no explicit exchange type, assume topic exchange
        } else if(this.routingKey != null) { 
            return new TopicExchange(this.exchangeName, this.durable, this.autodelete);
        } else {
            return new DirectExchange(this.exchangeName, this.durable, this.autodelete);
        }
    }

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    return new SingleConnectionFactory("localhost");
  }


  @Bean
  public TopicExchange testExchange() {
    return new TopicExchange(EXCHANGE, true, false);
  }

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  @Test
  public void testSendAndReceiveWithTopicSingleCallback() throws Exception {


    final RabbitAdmin admin = new RabbitAdmin(connectionFactory);
    final TopicExchange exchange = new TopicExchange("topic");
    admin.declareExchange(exchange);
    template.setExchange(exchange.getName());


    admin.declareBinding(BindingBuilder.bind(queue).to(exchange).with("*.end"));


    template.execute(new ChannelCallback<Void>() {
      @Override

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  @Test
  public void testSendAndReceiveWithNonDefaultExchange() throws Exception {


    final RabbitAdmin admin = new RabbitAdmin(connectionFactory);
    final TopicExchange exchange = new TopicExchange("topic");
    admin.declareExchange(exchange);


    admin.declareBinding(BindingBuilder.bind(queue).to(exchange).with("*.end"));


    template.execute(new ChannelCallback<Void>() {

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  @Test
  // @Ignore("Not sure yet if we need to support a use case like this")
  public void testSendAndReceiveWithTopicConsumeInBackground() throws Exception {


    RabbitAdmin admin = new RabbitAdmin(connectionFactory);
    TopicExchange exchange = new TopicExchange("topic");
    admin.declareExchange(exchange);
    template.setExchange(exchange.getName());


    admin.declareBinding(BindingBuilder.bind(queue).to(exchange).with("*.end"));


    final CachingConnectionFactory cachingConnectionFactory = new CachingConnectionFactory();
    cachingConnectionFactory.setHost("localhost");
    final RabbitTemplate template = new RabbitTemplate(cachingConnectionFactory);
    template.setExchange(exchange.getName());


    BlockingQueueConsumer consumer = template.execute(new ChannelCallback<BlockingQueueConsumer>() {
      @Override
      public BlockingQueueConsumer doInRabbit(Channel channel) throws Exception {

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  @Test
  public void testSendAndReceiveWithTopicTwoCallbacks() throws Exception {


    RabbitAdmin admin = new RabbitAdmin(connectionFactory);
    TopicExchange exchange = new TopicExchange("topic");
    admin.declareExchange(exchange);
    template.setExchange(exchange.getName());


    admin.declareBinding(BindingBuilder.bind(queue).to(exchange).with("*.end"));


    template.execute(new ChannelCallback<Void>() {
      @Override

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  protected void maybeDeclareExchange() {
    RabbitAdmin admin = new RabbitAdmin(connectionFactory);
    if (declareExchange) {
      Exchange x;
      if ("topic".equals(exchangeType)) {
        x = new TopicExchange(exchangeName, durable, autoDelete);
      }
      else if ("direct".equals(exchangeType)) {
        x = new DirectExchange(exchangeName, durable, autoDelete);
      }
      else if ("fanout".equals(exchangeType)) {
        x = new FanoutExchange(exchangeName, durable, autoDelete);
      }
      else if ("headers".equals(exchangeType)) {
        x = new HeadersExchange(exchangeType, durable, autoDelete);
      }
      else {
        x = new TopicExchange(exchangeName, durable, autoDelete);
      }
      // admin.deleteExchange(exchangeName);
      admin.declareExchange(x);
    }
  }

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  protected void maybeDeclareExchange() {
    RabbitAdmin admin = new RabbitAdmin(this.connectionFactory);
    if (this.declareExchange) {
      Exchange x;
      if ("topic".equals(this.exchangeType)) {
        x = new TopicExchange(this.exchangeName, this.durable, this.autoDelete);
      }
      else if ("direct".equals(this.exchangeType)) {
        x = new DirectExchange(this.exchangeName, this.durable, this.autoDelete);
      }
      else if ("fanout".equals(this.exchangeType)) {
        x = new FanoutExchange(this.exchangeName, this.durable, this.autoDelete);
      }
      else if ("headers".equals(this.exchangeType)) {
        x = new HeadersExchange(this.exchangeType, this.durable, this.autoDelete);
      }
      else {
        x = new TopicExchange(this.exchangeName, this.durable, this.autoDelete);
      }
      admin.declareExchange(x);
    }
  }

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    assertFalse(exchange.isAutoDelete());
  }


  @Test
  public void testTopicExchange() throws Exception {
    TopicExchange exchange = beanFactory.getBean("topic", TopicExchange.class);
    assertNotNull(exchange);
    assertEquals("topic", exchange.getName());
    assertTrue(exchange.isDurable());
    assertFalse(exchange.isAutoDelete());
    assertTrue(exchange.shouldDeclare());
    assertEquals(1, exchange.getDeclaringAdmins().size());


  }

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