Class: Waves::Blackboard

Inherits:
Object show all
Defined in:
lib/runtime/blackboard.rb

Overview

Encapsulates the blackboard associated with a given request. The scope of the blackboard is the same as the request object it gets attached to.

The Waves blackboard is a very simple shared storaged usable during the request processing. It is available within:

- mappings
- controllers
- helpers

Adding a value:

blackboard.value1 = 1
blackboard[:value2] = 2

Retrieving values

blackboard.value1
blackboard[:value2]

see also blackboard_verify.rb

Instance Method Summary collapse

Constructor Details

#initialize(request) ⇒ Blackboard

Create a new blackboard object using the given request.



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# File 'lib/runtime/blackboard.rb', line 25

def initialize( request )
  @request = request
  @data = {}
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args) ⇒ Object

also allow things like blackboard.test1 instead of blackboard blackboard.test1 = 2 instead of blackboard = 2



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# File 'lib/runtime/blackboard.rb', line 47

def method_missing(name,*args)
  if (name.to_s =~ /=$/)
    self[name.to_s.gsub('=', '')] = args[0]
  else
    self[name.to_s]
  end
end

Instance Method Details

#[](key) ⇒ Object

Access a given data element of the blackboard using the given key.



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# File 'lib/runtime/blackboard.rb', line 31

def [](key)
  @data[key]
end

#[]=(key, val) ⇒ Object

Set the given data element of the blackboard using the given key and value.



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# File 'lib/runtime/blackboard.rb', line 36

def []=(key,val)
  @data[key] = val
end

#each(&block) ⇒ Object 



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# File 'lib/runtime/blackboard.rb', line 40

def each(&block)
  @data.each(&block)
end