Class: Uttk::Filters::Buffer

Inherits:
Filter show all
Includes:
Concrete
Defined in:
lib/uttk/filters/Buffer.rb

Overview

This basic filter observe a logger and bufferize all received messages, with a tree formatting. The buffer can be flushed when the data are not usefull anymore. That imply that another entity, a kind of controller, should always be connected to this class.

The buffer is simple, all notified datas are directly putted inside, and when a flush is needed (or asked) it erases all datas. So, it is possible to think to a new class, derived from this one, which examin more precisely the notifications, and stock into the buffer just the desired. It could do the same for flush the buffer, just clear some part of the buffer. The tool Rpath could be very usefull to do that.

The messages are putted into the buffer in order to make a tree, only with Hash and OHash objects. So, that tree could be given at any time.

The main utiliy of this class is to provide exactly all the datas that another entity want. Moreover, that ones are given under a tree form, which allow simple navigation inside, especialy with the Rpath tool.

Defined Under Namespace

Modules: Assertions

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Filter

composition, #notif

Constructor Details

#initialize(*a, &b) ⇒ Buffer

Returns a new instance of Buffer.



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# File 'lib/uttk/filters/Buffer.rb', line 39

def initialize(*a, &b)
  super
  reset
end

Instance Attribute Details

#buffer ⇒ Object (readonly)

Returns the value of attribute buffer.



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# File 'lib/uttk/filters/Buffer.rb', line 37

def buffer
  @buffer
end

Instance Method Details

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/uttk/filters/Buffer.rb', line 97

def empty?
  @buffer.is_a? Hash and @buffer.empty?
end

#reset ⇒ Object Also known as: clear 



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# File 'lib/uttk/filters/Buffer.rb', line 44

def reset
  @buffer = {}
  @path = [@buffer]
  @last_node = nil
  @reset_planned = false
end

#update(*a, &b) ⇒ Object 



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# File 'lib/uttk/filters/Buffer.rb', line 92

def update ( *a, &b )
  reset if @reset_planned
  super
end