Class: Vertx::Future

Inherits:
Object
  • Object
show all
Defined in:
/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/future.rb

Overview

Represents the result of an action that may, or may not, have occurred yet.

Direct Known Subclasses

CompositeFuture

Class Method Summary (collapse)

Instance Method Summary (collapse)

Class Method Details

+ (::Vertx::Future) failedFuture(t) + (::Vertx::Future) failedFuture(failureMessage)

Create a failed future with the specified failure message.

Overloads:

  • + (::Vertx::Future) failedFuture(t)

    Parameters:

    • t (Exception)
      the failure cause as a Throwable
  • + (::Vertx::Future) failedFuture(failureMessage)

    Parameters:

    • failureMessage (String)
      the failure message

Returns:

Raises:

  • (ArgumentError)

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

def self.failed_future(param_1=nil)
  if param_1.is_a?(Exception) && !block_given?
    return ::Vertx::Util::Utils.safe_create(Java::IoVertxCore::Future.java_method(:failedFuture, [Java::JavaLang::Throwable.java_class]).call(::Vertx::Util::Utils.to_throwable(param_1)),::Vertx::Future, nil)
  elsif param_1.class == String && !block_given?
    return ::Vertx::Util::Utils.safe_create(Java::IoVertxCore::Future.java_method(:failedFuture, [Java::java.lang.String.java_class]).call(param_1),::Vertx::Future, nil)
  end
  raise ArgumentError, "Invalid arguments when calling failed_future(#{param_1})"
end

+ (::Vertx::Future) future { ... }

Create a future that hasn't completed yet and that is passed to the handler before it is returned.

Yields:

  • the handler

Returns:

Raises:

  • (ArgumentError)

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# File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/future.rb', line 22

def self.future
  if !block_given?
    return ::Vertx::Util::Utils.safe_create(Java::IoVertxCore::Future.java_method(:future, []).call(),::Vertx::Future, nil)
  elsif block_given?
    return ::Vertx::Util::Utils.safe_create(Java::IoVertxCore::Future.java_method(:future, [Java::IoVertxCore::Handler.java_class]).call((Proc.new { |event| yield(::Vertx::Util::Utils.safe_create(event,::Vertx::Promise, nil)) })),::Vertx::Future, nil)
  end
  raise ArgumentError, "Invalid arguments when calling future()"
end

+ (::Vertx::Future) succeeded_future(result = nil)

Created a succeeded future with the specified result.

Parameters:

  • result (Object) (defaults to: nil)
    the result

Returns:

Raises:

  • (ArgumentError)

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

def self.succeeded_future(result=nil)
  if !block_given? && result == nil
    return ::Vertx::Util::Utils.safe_create(Java::IoVertxCore::Future.java_method(:succeededFuture, []).call(),::Vertx::Future, nil)
  elsif ::Vertx::Util::unknown_type.accept?(result) && !block_given?
    return ::Vertx::Util::Utils.safe_create(Java::IoVertxCore::Future.java_method(:succeededFuture, [Java::java.lang.Object.java_class]).call(::Vertx::Util::Utils.to_object(result)),::Vertx::Future, nil)
  end
  raise ArgumentError, "Invalid arguments when calling succeeded_future(#{result})"
end

Instance Method Details

- (Exception) cause

A Throwable describing failure. This will be null if the operation succeeded.

Returns:

  • (Exception)
    the cause or null if the operation succeeded.

Raises:

  • (ArgumentError)

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# File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/future.rb', line 138

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

- (void) complete(result = nil)

This method returns an undefined value.

Set the result. Any handler will be called, if there is one, and the future will be marked as completed.

Parameters:

  • result (Object) (defaults to: nil)
    the result

Raises:

  • (ArgumentError)

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# File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/future.rb', line 81

def complete(result=nil)
  if !block_given? && result == nil
    return @j_del.java_method(:complete, []).call()
  elsif @j_arg_T.accept?(result) && !block_given?
    return @j_del.java_method(:complete, [Java::java.lang.Object.java_class]).call(@j_arg_T.unwrap(result))
  end
  raise ArgumentError, "Invalid arguments when calling complete(#{result})"
end

- (true, false) complete?

Has the future completed?

It's completed if it's either succeeded or failed.

Returns:

  • (true, false)
    true if completed, false if not

Raises:

  • (ArgumentError)

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# File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/future.rb', line 59

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

- (Proc) completer

Returns an handler completing this future

Returns:

  • (Proc)
    an handler completing this future

Raises:

  • (ArgumentError)

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# File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/future.rb', line 211

def completer
  if !block_given?
    if @cached_completer != nil
      return @cached_completer
    end
    return @cached_completer = ::Vertx::Util::Utils.to_async_result_handler_proc(@j_del.java_method(:completer, []).call()) { |val| @j_arg_T.unwrap(val) }
  end
  raise ArgumentError, "Invalid arguments when calling completer()"
end

- (::Vertx::Future) compose(mapper = nil) { ... }

Compose this future with a mapper function.

When this future (the one on which compose is called) succeeds, the mapper will be called with the completed value and this mapper returns another future object. This returned future completion will complete the future returned by this method call.

If the mapper throws an exception, the returned future will be failed with this exception.

When this future fails, the failure will be propagated to the returned future and the mapper will not be called.

Yields:

  • the mapper function

Returns:

Raises:

  • (ArgumentError)

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# File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/future.rb', line 172

def compose(mapper=nil)
  if block_given? && mapper == nil
    return ::Vertx::Util::Utils.safe_create(@j_del.java_method(:compose, [Java::JavaUtilFunction::Function.java_class]).call((Proc.new { |event| yield(@j_arg_T.wrap(event)).j_del })),::Vertx::Future, nil)
  end
  raise ArgumentError, "Invalid arguments when calling compose(#{mapper})"
end

- (void) fail(cause) - (void) fail(failureMessage)

This method returns an undefined value.

Try to set the failure. When it happens, any handler will be called, if there is one, and the future will be marked as completed.

Overloads:

  • - (void) fail(cause)

    Parameters:

    • cause (Exception)
      the failure cause
  • - (void) fail(failureMessage)

    Parameters:

    • failureMessage (String)
      the failure message

Raises:

  • (ArgumentError)

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# File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/future.rb', line 95

def fail(param_1=nil)
  if param_1.is_a?(Exception) && !block_given?
    return @j_del.java_method(:fail, [Java::JavaLang::Throwable.java_class]).call(::Vertx::Util::Utils.to_throwable(param_1))
  elsif param_1.class == String && !block_given?
    return @j_del.java_method(:fail, [Java::java.lang.String.java_class]).call(param_1)
  end
  raise ArgumentError, "Invalid arguments when calling fail(#{param_1})"
end

- (true, false) failed?

Did it fail?

Returns:

  • (true, false)
    true if it failed or false otherwise

Raises:

  • (ArgumentError)

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# File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/future.rb', line 154

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

- (::Vertx::Future) map(mapper) { ... } - (::Vertx::Future) map(value)

Map the result of a future to a specific value.

When this future succeeds, this value will complete the future returned by this method call.

When this future fails, the failure will be propagated to the returned future.

Overloads:

  • - (::Vertx::Future) map(mapper) { ... }

    Yields:

    • the mapper function
  • - (::Vertx::Future) map(value)

    Parameters:

    • value (Object)
      the value that eventually completes the mapped future

Returns:

Raises:

  • (ArgumentError)

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# File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/future.rb', line 188

def map(param_1=nil)
  if block_given? && param_1 == nil
    return ::Vertx::Util::Utils.safe_create(@j_del.java_method(:map, [Java::JavaUtilFunction::Function.java_class]).call((Proc.new { |event| ::Vertx::Util::Utils.to_object(yield(@j_arg_T.wrap(event))) })),::Vertx::Future, nil)
  elsif ::Vertx::Util::unknown_type.accept?(param_1) && !block_given?
    return ::Vertx::Util::Utils.safe_create(@j_del.java_method(:map, [Java::java.lang.Object.java_class]).call(::Vertx::Util::Utils.to_object(param_1)),::Vertx::Future, nil)
  end
  raise ArgumentError, "Invalid arguments when calling map(#{param_1})"
end

- (::Vertx::Future) map_empty

Map the result of a future to null.

This is a conveniency for future.map((T) null) or future.map((Void) null).

When this future succeeds, null will complete the future returned by this method call.

When this future fails, the failure will be propagated to the returned future.

Returns:

Raises:

  • (ArgumentError)

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# File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/future.rb', line 204

def map_empty
  if !block_given?
    return ::Vertx::Util::Utils.safe_create(@j_del.java_method(:mapEmpty, []).call(),::Vertx::Future, nil)
  end
  raise ArgumentError, "Invalid arguments when calling map_empty()"
end

- (::Vertx::Future) otherwise(mapper) { ... } - (::Vertx::Future) otherwise(value)

Map the failure of a future to a specific value.

When this future fails, this value will complete the future returned by this method call.

When this future succeeds, the result will be propagated to the returned future.

Overloads:

  • - (::Vertx::Future) otherwise(mapper) { ... }

    Yields:

    • the mapper function
  • - (::Vertx::Future) otherwise(value)

    Parameters:

    • value (Object)
      the value that eventually completes the mapped future

Returns:

Raises:

  • (ArgumentError)

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# File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/future.rb', line 240

def otherwise(param_1=nil)
  if block_given? && param_1 == nil
    return ::Vertx::Util::Utils.safe_create(@j_del.java_method(:otherwise, [Java::JavaUtilFunction::Function.java_class]).call((Proc.new { |event| @j_arg_T.unwrap(yield(::Vertx::Util::Utils.from_throwable(event))) })),::Vertx::Future, nil)
  elsif @j_arg_T.accept?(param_1) && !block_given?
    return ::Vertx::Util::Utils.safe_create(@j_del.java_method(:otherwise, [Java::java.lang.Object.java_class]).call(@j_arg_T.unwrap(param_1)),::Vertx::Future, nil)
  end
  raise ArgumentError, "Invalid arguments when calling otherwise(#{param_1})"
end

- (::Vertx::Future) otherwise_empty

Map the failure of a future to null.

This is a convenience for future.otherwise((T) null).

When this future fails, the null value will complete the future returned by this method call.

When this future succeeds, the result will be propagated to the returned future.

Returns:

Raises:

  • (ArgumentError)

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# File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/future.rb', line 256

def otherwise_empty
  if !block_given?
    return ::Vertx::Util::Utils.safe_create(@j_del.java_method(:otherwiseEmpty, []).call(),::Vertx::Future, nil)
  end
  raise ArgumentError, "Invalid arguments when calling otherwise_empty()"
end

- (::Vertx::Future) recover(mapper = nil) { ... }

Handles a failure of this Future by returning the result of another Future. If the mapper fails, then the returned future will be failed with this failure.

Yields:

  • A function which takes the exception of a failure and returns a new future.

Returns:

Raises:

  • (ArgumentError)

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# File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/future.rb', line 224

def recover(mapper=nil)
  if block_given? && mapper == nil
    return ::Vertx::Util::Utils.safe_create(@j_del.java_method(:recover, [Java::JavaUtilFunction::Function.java_class]).call((Proc.new { |event| yield(::Vertx::Util::Utils.from_throwable(event)).j_del })),::Vertx::Future, nil)
  end
  raise ArgumentError, "Invalid arguments when calling recover(#{mapper})"
end

- (Object) result

The result of the operation. This will be null if the operation failed.

Returns:

  • (Object)
    the result or null if the operation failed.

Raises:

  • (ArgumentError)

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# File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/future.rb', line 130

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

- (self) set_handler { ... }

Set a handler for the result.

If the future has already been completed it will be called immediately. Otherwise it will be called when the future is completed.

Yields:

  • the Handler that will be called with the result

Returns:

  • (self)

Raises:

  • (ArgumentError)

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

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

- (true, false) succeeded?

Did it succeed?

Returns:

  • (true, false)
    true if it succeded or false otherwise

Raises:

  • (ArgumentError)

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# File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/future.rb', line 146

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

- (true, false) try_complete?(result = nil)

Set the failure. Any handler will be called, if there is one, and the future will be marked as completed.

Parameters:

  • result (Object) (defaults to: nil)
    the result

Returns:

  • (true, false)
    false when the future is already completed

Raises:

  • (ArgumentError)

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# File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/future.rb', line 106

def try_complete?(result=nil)
  if !block_given? && result == nil
    return @j_del.java_method(:tryComplete, []).call()
  elsif @j_arg_T.accept?(result) && !block_given?
    return @j_del.java_method(:tryComplete, [Java::java.lang.Object.java_class]).call(@j_arg_T.unwrap(result))
  end
  raise ArgumentError, "Invalid arguments when calling try_complete?(#{result})"
end

- (true, false) tryFail(cause) - (true, false) tryFail(failureMessage)

Try to set the failure. When it happens, any handler will be called, if there is one, and the future will be marked as completed.

Overloads:

  • - (true, false) tryFail(cause)

    Parameters:

    • cause (Exception)
      the failure cause
  • - (true, false) tryFail(failureMessage)

    Parameters:

    • failureMessage (String)
      the failure message

Returns:

  • (true, false)
    false when the future is already completed

Raises:

  • (ArgumentError)

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# File '/Users/julien/java/vertx-aggregator/modules/vertx-lang-ruby/vertx-lang-ruby/target/classes/vertx/future.rb', line 120

def try_fail?(param_1=nil)
  if param_1.is_a?(Exception) && !block_given?
    return @j_del.java_method(:tryFail, [Java::JavaLang::Throwable.java_class]).call(::Vertx::Util::Utils.to_throwable(param_1))
  elsif param_1.class == String && !block_given?
    return @j_del.java_method(:tryFail, [Java::java.lang.String.java_class]).call(param_1)
  end
  raise ArgumentError, "Invalid arguments when calling try_fail?(#{param_1})"
end