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# Module: Vertx::ReadStream

Includes:
  StreamBase
Included in:
  AsyncFile, DatagramSocket, HttpClientRequest, HttpClientResponse, HttpServerFileUpload, HttpServerRequest, JsonParser, MessageConsumer, NetSocket, ReadStreamImpl, RecordParser, TimeoutStream, WebSocketBase, VertxCassandra::CassandraRowStream, VertxKafkaClient::KafkaConsumer, VertxRabbitmq::RabbitMQConsumer, VertxSql::SQLRowStream, VertxUnit::TestSuiteReport, VertxWeb::SockJSSocket
Defined in:
  /Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/read_stream.rb

## Instance Method Summary (collapse)

- - (self) end_handler { ... }
  Set an end handler.
- - (self) exception_handler { ... }
  Set an exception handler on the read stream.
- - (self) fetch(amount = nil)
  Fetch the specified amount of elements.
- - (self) handler { ... }
  Set a data handler.
- - (self) pause
  Pause the ReadStream, it sets the buffer in fetch mode and clears the actual demand.
- - (self) resume
  Resume reading, and sets the buffer in flowing mode.

## Instance Method Details

### - (`self`) end_handler { ... }

Set an end handler. Once the stream has ended, and there is no more data to be read, this handler will be called.

Yields:

Returns:

- (`self`)

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/read_stream.rb', line 64

    def end_handler
      if block_given?
        @j_del.java_method(:endHandler, [Java::IoVertxCore::Handler.java_class]).call(Proc.new { yield })
        return self
      end
      raise ArgumentError, "Invalid arguments when calling end_handler()"
    end

### - (`self`) exception_handler { ... }

Set an exception handler on the read stream.

Yields:

- the exception handler

Returns:

- (`self`)

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/read_stream.rb', line 10

    def exception_handler
      if block_given?
        @j_del.java_method(:exceptionHandler, [Java::IoVertxCore::Handler.java_class]).call((Proc.new { |event| yield(::Vertx::Util::Utils.from_throwable(event)) }))
        return self
      end
      raise ArgumentError, "Invalid arguments when calling exception_handler()"
    end

### - (`self`) fetch(amount = nil)

Fetch the specified `amount` of elements. If the `ReadStream` has been paused, reading will recommence with the specified `amount` of items, otherwise the specified `amount` will be added to the current stream demand.

Parameters:

- amount (`Fixnum`) (defaults to: `nil`)

Returns:

- (`self`)

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/read_stream.rb', line 54

    def fetch(amount=nil)
      if amount.class == Fixnum && !block_given?
        @j_del.java_method(:fetch, [Java::long.java_class]).call(amount)
        return self
      end
      raise ArgumentError, "Invalid arguments when calling fetch(#{amount})"
    end

### - (`self`) handler { ... }

Set a data handler. As data is read, the handler will be called with the data.

Yields:

Returns:

- (`self`)

Raises:

- (`ArgumentError`)

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

    def handler
      if block_given?
        @j_del.java_method(:handler, [Java::IoVertxCore::Handler.java_class]).call((Proc.new { |event| yield(@j_arg_T.wrap(event)) }))
        return self
      end
      raise ArgumentError, "Invalid arguments when calling handler()"
    end

### - (`self`) pause

Pause the `ReadStream`, it sets the buffer in `fetch` mode and clears the actual demand.

While it's paused, no data will be sent to the data `handler`.

Returns:

- (`self`)

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/read_stream.rb', line 31

    def pause
      if !block_given?
        @j_del.java_method(:pause, []).call()
        return self
      end
      raise ArgumentError, "Invalid arguments when calling pause()"
    end

### - (`self`) resume

Resume reading, and sets the buffer in `flowing` mode.

If the `ReadStream` has been paused, reading will recommence on it.

Returns:

- (`self`)

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/read_stream.rb', line 42

    def resume
      if !block_given?
        @j_del.java_method(:resume, []).call()
        return self
      end
      raise ArgumentError, "Invalid arguments when calling resume()"
    end