Class: Vertx::AsyncFile

Inherits:
Object
  • Object
show all
Includes:
ReadStream, WriteStream
Defined in:
/Users/julien/java/vertx-stack/stack-docs/target/rb/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)

Instance Method Summary (collapse)

Class Method Details

+ (Boolean) accept?(obj)

Returns:

  • (Boolean)


27
28
29
# File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx/async_file.rb', line 27

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

+ (Object) j_api_type



36
37
38
# File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx/async_file.rb', line 36

def self.j_api_type
  @@j_api_type
end

+ (Object) j_class



39
40
41
# File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx/async_file.rb', line 39

def self.j_class
  Java::IoVertxCoreFile::AsyncFile.java_class
end

+ (Object) unwrap(obj)



33
34
35
# File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx/async_file.rb', line 33

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

+ (Object) wrap(obj)



30
31
32
# File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx/async_file.rb', line 30

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)


149
150
151
152
153
154
155
156
# File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx/async_file.rb', line 149

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)


129
130
131
132
133
134
135
# File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx/async_file.rb', line 129

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(t = nil)

This method returns an undefined value.

Same as #end but writes some data to the stream before ending.

Parameters:

Raises:

  • (ArgumentError)


45
46
47
48
49
50
51
52
# File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx/async_file.rb', line 45

def end(t=nil)
  if !block_given? && t == nil
    return @j_del.java_method(:end, []).call()
  elsif t.class.method_defined?(:j_del) && !block_given?
    return @j_del.java_method(:end, [Java::IoVertxCoreBuffer::Buffer.java_class]).call(t.j_del)
  end
  raise ArgumentError, "Invalid arguments when calling end(#{t})"
end

- (self) end_handler { ... }

Yields:

Returns:

  • (self)

Raises:

  • (ArgumentError)


88
89
90
91
92
93
94
# File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx/async_file.rb', line 88

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)


138
139
140
141
142
143
144
# File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx/async_file.rb', line 138

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) 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)


181
182
183
184
185
186
187
188
189
190
# File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx/async_file.rb', line 181

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

- (self) handler { ... }

Yields:

Returns:

  • (self)

Raises:

  • (ArgumentError)


63
64
65
66
67
68
69
# File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx/async_file.rb', line 63

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)


71
72
73
74
75
76
77
# File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx/async_file.rb', line 71

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


171
172
173
174
175
176
177
# File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx/async_file.rb', line 171

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)


79
80
81
82
83
84
85
# File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx/async_file.rb', line 79

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)


215
216
217
218
219
220
221
# File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx/async_file.rb', line 215

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_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)


194
195
196
197
198
199
200
# File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx/async_file.rb', line 194

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)


204
205
206
207
208
209
210
# File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx/async_file.rb', line 204

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)


120
121
122
123
124
125
126
# File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx/async_file.rb', line 120

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)


108
109
110
111
112
113
114
115
116
117
# File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx/async_file.rb', line 108

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) && 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)


55
56
57
58
59
60
# File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx/async_file.rb', line 55

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