Class: DataMapper::DependencyQueue

Inherits:
Object
  • Object
show all
Defined in:
lib/data_mapper/dependency_queue.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ DependencyQueue

Returns a new instance of DependencyQueue.



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# File 'lib/data_mapper/dependency_queue.rb', line 4

def initialize
  @dependencies = Hash.new { |h,k| h[k] = [] }
end

Instance Method Details

#add(class_name, &b) ⇒ Object 



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# File 'lib/data_mapper/dependency_queue.rb', line 8

def add(class_name, &b)
  @dependencies[class_name] << b
  resolve!
end

#resolve! ⇒ Object 



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# File 'lib/data_mapper/dependency_queue.rb', line 13

def resolve!
  @dependencies.each_pair do |class_name, callbacks|
    if Object.const_defined?(class_name)
      klass = Object.const_get(class_name)

      callbacks.each do |b|
        b.call(klass)
      end
      
      callbacks.clear
    end
  end
end