Class List Method List File List

# Class: Vertx::AsyncFile

Inherits:
  Object
  - Object
  - Vertx::AsyncFile
  show all
Includes:
  ReadStream, WriteStream
Defined in:
  /Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/async_file.rb

## Overview

Represents a file on the file-system which can be read from, or written to asynchronously.

This class also implements ReadStream and WriteStream. This allows the data to be pumped to and from other streams, e.g. an HttpClientRequest instance, using the Pump class

## 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)

- - (void) close { ... }
  Close the file.
- - (self) drain_handler { ... }
- - (void) end(data = nil) { ... }
  Same as but with an handler called when the operation completes.
- - (self) end_handler { ... }
- - (self) exception_handler { ... }
- - (self) fetch(amount = nil)
- - (self) flush { ... }
  Same as #flush but the handler will be called when the flush is complete or if an error occurs.
- - (Fixnum) get_write_pos
  The current write position the file is at.
- - (self) handler { ... }
- - (self) pause
- - (::Vertx::Pipe) pipe
  Pause this stream and return a to transfer the elements of this stream to a destination .
- - (void) pipe_to(dst = nil) { ... }
  Pipe this ReadStream to the WriteStream.
- - (self) read(buffer = nil, offset = nil, position = nil, length = nil) { ... }
  Reads length bytes of data from the file at position position in the file, asynchronously.
- - (self) resume
- - (self) set_read_buffer_size(readBufferSize = nil)
  Sets the buffer size that will be used to read the data from the file.
- - (self) set_read_length(readLength = nil)
  Sets the number of bytes that will be read when using the file as a ReadStream.
- - (self) set_read_pos(readPos = nil)
  Sets the position from which data will be read from when using the file as a ReadStream.
- - (self) set_write_pos(writePos = nil)
  Sets the position from which data will be written when using the file as a WriteStream.
- - (self) set_write_queue_max_size(maxSize = nil)
- - (self) write(buffer = nil, position = nil) { ... }
  Write a Buffer to the file at position position in the file, asynchronously.
- - (true, false) write_queue_full?
  This will return true if there are more bytes in the write queue than the value set using #set_write_queue_max_size.

## 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/async_file.rb', line 28

    def @@j_api_type.accept?(obj)
      obj.class == AsyncFile
    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/async_file.rb', line 37

    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/async_file.rb', line 40

    def self.j_class
      Java::IoVertxCoreFile::AsyncFile.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/async_file.rb', line 34

    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/async_file.rb', line 31

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

## Instance Method Details

### - (`void`) close { ... }

This method returns an undefined value.

Close the file. The actual close happens asynchronously. The handler will be called when the close is complete, or an error occurs.

Yields:

- the handler

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/async_file.rb', line 194

    def close
      if !block_given?
        return @j_del.java_method(:close, []).call()
      elsif block_given?
        return @j_del.java_method(:close, [Java::IoVertxCore::Handler.java_class]).call((Proc.new { |ar| yield(ar.failed ? ar.cause : nil) }))
      end
      raise ArgumentError, "Invalid arguments when calling close()"
    end

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

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/async_file.rb', line 165

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

### - (`void`) end(data = nil) { ... }

This method returns an undefined value.

Same as but with an `handler` called when the operation completes

Parameters:

- data (`::Vertx::Buffer`) (defaults to: `nil`)

Yields:

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/async_file.rb', line 47

    def end(data=nil)
      if !block_given? && data == nil
        return @j_del.java_method(:end, []).call()
      elsif data.class.method_defined?(:j_del) && !block_given?
        return @j_del.java_method(:end, [Java::IoVertxCoreBuffer::Buffer.java_class]).call(data.j_del)
      elsif block_given? && data == nil
        return @j_del.java_method(:end, [Java::IoVertxCore::Handler.java_class]).call((Proc.new { |ar| yield(ar.failed ? ar.cause : nil) }))
      elsif data.class.method_defined?(:j_del) && block_given?
        return @j_del.java_method(:end, [Java::IoVertxCoreBuffer::Buffer.java_class,Java::IoVertxCore::Handler.java_class]).call(data.j_del,(Proc.new { |ar| yield(ar.failed ? ar.cause : nil) }))
      end
      raise ArgumentError, "Invalid arguments when calling end(#{data})"
    end

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

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/async_file.rb', line 121

    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 { ... }

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/async_file.rb', line 174

    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)

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/async_file.rb', line 183

    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`) flush { ... }

Same as #flush but the handler will be called when the flush is complete or if an error occurs

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/async_file.rb', line 226

    def flush
      if !block_given?
        @j_del.java_method(:flush, []).call()
        return self
      elsif block_given?
        @j_del.java_method(:flush, [Java::IoVertxCore::Handler.java_class]).call((Proc.new { |ar| yield(ar.failed ? ar.cause : nil) }))
        return self
      end
      raise ArgumentError, "Invalid arguments when calling flush()"
    end

### - (`Fixnum`) get_write_pos

Returns the current write position the file is at

Returns:

- (`Fixnum`) —
  the current write position the file is at

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/async_file.rb', line 267

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

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

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/async_file.rb', line 96

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

### - (`self`) pause

Returns:

- (`self`)

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/async_file.rb', line 104

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

### - (`::Vertx::Pipe`) pipe

Pause this stream and return a to transfer the elements of this stream to a destination .

The stream will be resumed when the pipe will be wired to a `WriteStream`.

Returns:

- (`::Vertx::Pipe`) —
  a pipe

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/async_file.rb', line 71

    def pipe
      if !block_given?
        return ::Vertx::Util::Utils.safe_create(@j_del.java_method(:pipe, []).call(),::Vertx::Pipe,::Vertx::Buffer.j_api_type)
      end
      raise ArgumentError, "Invalid arguments when calling pipe()"
    end

### - (`void`) pipe_to(dst = nil) { ... }

This method returns an undefined value.

Pipe this `ReadStream` to the `WriteStream`.

Elements emitted by this stream will be written to the write stream until this stream ends or fails.

Once this stream has ended or failed, the write stream will be ended and the `handler` will be called with the result.

Parameters:

- dst (`::Vertx::WriteStream`) (defaults to: `nil`) —
  the destination write stream

Yields:

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/async_file.rb', line 86

    def pipe_to(dst=nil)
      if dst.class.method_defined?(:j_del) && !block_given?
        return @j_del.java_method(:pipeTo, [Java::IoVertxCoreStreams::WriteStream.java_class]).call(dst.j_del)
      elsif dst.class.method_defined?(:j_del) && block_given?
        return @j_del.java_method(:pipeTo, [Java::IoVertxCoreStreams::WriteStream.java_class,Java::IoVertxCore::Handler.java_class]).call(dst.j_del,(Proc.new { |ar| yield(ar.failed ? ar.cause : nil) }))
      end
      raise ArgumentError, "Invalid arguments when calling pipe_to(#{dst})"
    end

### - (`self`) read(buffer = nil, offset = nil, position = nil, length = nil) { ... }

Reads `length` bytes of data from the file at position `position` in the file, asynchronously.

The read data will be written into the specified `Buffer buffer` at position `offset`.

If data is read past the end of the file then zero bytes will be read.

When multiple reads are invoked on the same file there are no guarantees as to order in which those reads actually occur.

The handler will be called when the close is complete, or if an error occurs.

Parameters:

- buffer (`::Vertx::Buffer`) (defaults to: `nil`) —
  the buffer to read into
- offset (`Fixnum`) (defaults to: `nil`) —
  the offset into the buffer where the data will be read
- position (`Fixnum`) (defaults to: `nil`) —
  the position in the file where to start reading
- length (`Fixnum`) (defaults to: `nil`) —
  the number of bytes to read

Yields:

- the handler to call when the write is complete

Returns:

- (`self`)

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/async_file.rb', line 216

    def read(buffer=nil,offset=nil,position=nil,length=nil)
      if buffer.class.method_defined?(:j_del) && offset.class == Fixnum && position.class == Fixnum && length.class == Fixnum && block_given?
        @j_del.java_method(:read, [Java::IoVertxCoreBuffer::Buffer.java_class,Java::int.java_class,Java::long.java_class,Java::int.java_class,Java::IoVertxCore::Handler.java_class]).call(buffer.j_del,offset,position,length,(Proc.new { |ar| yield(ar.failed ? ar.cause : nil, ar.succeeded ? ::Vertx::Util::Utils.safe_create(ar.result,::Vertx::Buffer) : nil) }))
        return self
      end
      raise ArgumentError, "Invalid arguments when calling read(#{buffer},#{offset},#{position},#{length})"
    end

### - (`self`) resume

Returns:

- (`self`)

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/async_file.rb', line 112

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

### - (`self`) set_read_buffer_size(readBufferSize = nil)

Sets the buffer size that will be used to read the data from the file. Changing this value will impact how much the data will be read at a time from the file system.

Parameters:

- readBufferSize (`Fixnum`) (defaults to: `nil`) —
  the buffer size

Returns:

- (`self`)

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/async_file.rb', line 277

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

### - (`self`) set_read_length(readLength = nil)

Sets the number of bytes that will be read when using the file as a ReadStream.

Parameters:

- readLength (`Fixnum`) (defaults to: `nil`) —
  the bytes that will be read from the file

Returns:

- (`self`)

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/async_file.rb', line 249

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

### - (`self`) set_read_pos(readPos = nil)

Sets the position from which data will be read from when using the file as a ReadStream.

Parameters:

- readPos (`Fixnum`) (defaults to: `nil`) —
  the position in the file

Returns:

- (`self`)

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/async_file.rb', line 239

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

### - (`self`) set_write_pos(writePos = nil)

Sets the position from which data will be written when using the file as a WriteStream.

Parameters:

- writePos (`Fixnum`) (defaults to: `nil`) —
  the position in the file

Returns:

- (`self`)

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/async_file.rb', line 259

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

### - (`self`) set_write_queue_max_size(maxSize = nil)

Parameters:

- maxSize (`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/async_file.rb', line 156

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

### - (`self`) write(buffer = nil, position = nil) { ... }

Write a Buffer to the file at position `position` in the file, asynchronously.

If `position` lies outside of the current size of the file, the file will be enlarged to encompass it.

When multiple writes are invoked on the same file there are no guarantees as to order in which those writes actually occur

The handler will be called when the write is complete, or if an error occurs.

Parameters:

- buffer (`::Vertx::Buffer`) (defaults to: `nil`) —
  the buffer to write
- position (`Fixnum`) (defaults to: `nil`) —
  the position in the file to write it at

Yields:

- the handler to call when the write is complete

Returns:

- (`self`)

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/async_file.rb', line 141

    def write(buffer=nil,position=nil)
      if buffer.class.method_defined?(:j_del) && !block_given? && position == nil
        @j_del.java_method(:write, [Java::IoVertxCoreBuffer::Buffer.java_class]).call(buffer.j_del)
        return self
      elsif buffer.class.method_defined?(:j_del) && block_given? && position == nil
        @j_del.java_method(:write, [Java::IoVertxCoreBuffer::Buffer.java_class,Java::IoVertxCore::Handler.java_class]).call(buffer.j_del,(Proc.new { |ar| yield(ar.failed ? ar.cause : nil) }))
        return self
      elsif buffer.class.method_defined?(:j_del) && position.class == Fixnum && block_given?
        @j_del.java_method(:write, [Java::IoVertxCoreBuffer::Buffer.java_class,Java::long.java_class,Java::IoVertxCore::Handler.java_class]).call(buffer.j_del,position,(Proc.new { |ar| yield(ar.failed ? ar.cause : nil) }))
        return self
      end
      raise ArgumentError, "Invalid arguments when calling write(#{buffer},#{position})"
    end

### - (`true`, `false`) write_queue_full?

This will return `true` if there are more bytes in the write queue than the value set using #set_write_queue_max_size

Returns:

- (`true`, `false`) —
  true if write queue is full

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/async_file.rb', line 61

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