Class: Proforma::Modeling::Grouping

Inherits:
Object
  • Object
show all
Includes:
Compiling::Compilable
Defined in:
lib/proforma/modeling/grouping.rb

Overview

A grouping is an inverted collection, meaning, it iterates each child once per record instead of only one time. It also provides a mechanic to traverse data to tap nested child data (through the property attribute.)

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(children: [], property: nil) ⇒ Grouping

Returns a new instance of Grouping.



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# File 'lib/proforma/modeling/grouping.rb', line 23

def initialize(children: [], property: nil)
  @children = ModelFactory.array(children)
  @property = property
end

Instance Attribute Details

#children ⇒ Object 



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# File 'lib/proforma/modeling/grouping.rb', line 28

def children
  Array(@children)
end

#property ⇒ Object

Returns the value of attribute property.



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# File 'lib/proforma/modeling/grouping.rb', line 19

def property
  @property
end

Instance Method Details

#compile(data, evaluator) ⇒ Object 



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# File 'lib/proforma/modeling/grouping.rb', line 32

def compile(data, evaluator)
  records = array(evaluator.value(data, property))

  records.map { |record| Collection.new(children: children).compile(record, evaluator) }
         .flatten
end