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# Class: VertxMqtt::MqttTopicSubscription

Inherits:
  Object
  - Object
  - VertxMqtt::MqttTopicSubscription
  show all
Defined in:
  /Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx-mqtt/mqtt_topic_subscription.rb

## Overview

Represents a subscription to a topic

## Constant Summary

@@j_api_type =

      Object.new

## Class Method Summary (collapse)

- + (Boolean) accept?(obj)
- + (Object) j_api_type
- + (Object) j_class
- + (Object) unwrap(obj)
- + (Object) wrap(obj)

## Instance Method Summary (collapse)

- - (:AT_MOST_ONCE, ...) quality_of_service
  Quality of Service level for the subscription.
- - (String) topic_name
  Subscription topic name.

## Class Method Details

### + (`Boolean`) accept?(obj)

Returns:

- (`Boolean`)

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx-mqtt/mqtt_topic_subscription.rb', line 17

    def @@j_api_type.accept?(obj)
      obj.class == MqttTopicSubscription
    end

### + (`Object`) j_api_type

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx-mqtt/mqtt_topic_subscription.rb', line 26

    def self.j_api_type
      @@j_api_type
    end

### + (`Object`) j_class

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx-mqtt/mqtt_topic_subscription.rb', line 29

    def self.j_class
      Java::IoVertxMqtt::MqttTopicSubscription.java_class
    end

### + (`Object`) unwrap(obj)

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx-mqtt/mqtt_topic_subscription.rb', line 23

    def @@j_api_type.unwrap(obj)
      obj.j_del
    end

### + (`Object`) wrap(obj)

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx-mqtt/mqtt_topic_subscription.rb', line 20

    def @@j_api_type.wrap(obj)
      MqttTopicSubscription.new(obj)
    end

## Instance Method Details

### - (`:AT_MOST_ONCE`, ...) quality_of_service

Returns Quality of Service level for the subscription

Returns:

- (`:AT_MOST_ONCE`, `:AT_LEAST_ONCE`, `:EXACTLY_ONCE`, `:FAILURE`) —
  Quality of Service level for the subscription

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx-mqtt/mqtt_topic_subscription.rb', line 43

    def quality_of_service
      if !block_given?
        if @cached_quality_of_service != nil
          return @cached_quality_of_service
        end
        return @cached_quality_of_service = @j_del.java_method(:qualityOfService, []).call().name.intern
      end
      raise ArgumentError, "Invalid arguments when calling quality_of_service()"
    end

### - (`String`) topic_name

Returns Subscription topic name

Returns:

- (`String`) —
  Subscription topic name

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx-mqtt/mqtt_topic_subscription.rb', line 33

    def topic_name
      if !block_given?
        if @cached_topic_name != nil
          return @cached_topic_name
        end
        return @cached_topic_name = @j_del.java_method(:topicName, []).call()
      end
      raise ArgumentError, "Invalid arguments when calling topic_name()"
    end