Class: ConceptQL::Nodes::Node

Inherits:
Object
  • Object
show all
Defined in:
lib/conceptql/nodes/node.rb

Constant Summary collapse

COLUMNS = 
[
  :person_id,
  :criterion_id,
  :criterion_type,
  :start_date,
  :end_date,
  :value_as_numeric,
  :value_as_string,
  :value_as_concept_id
]

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*args) ⇒ Node

Returns a new instance of Node.



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# File 'lib/conceptql/nodes/node.rb', line 18

def initialize(*args)
  args.flatten!
  if args.last.is_a?(Hash)
    @options = args.pop.symbolize_keys
  end
  @options ||= {}
  @values = args.flatten
end

Instance Attribute Details

#tree=(value) ⇒ Object

Sets the attribute tree

Parameters:

  • value —

    the value to set the attribute tree to.



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# File 'lib/conceptql/nodes/node.rb', line 17

def tree=(value)
  @tree = value
end

#values ⇒ Object (readonly)

Returns the value of attribute values.



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# File 'lib/conceptql/nodes/node.rb', line 16

def values
  @values
end

Instance Method Details

#arguments ⇒ Object 



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# File 'lib/conceptql/nodes/node.rb', line 52

def arguments
  @arguments ||= values.reject { |v| v.is_a?(Node) }
end

#children ⇒ Object 



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# File 'lib/conceptql/nodes/node.rb', line 44

def children
  @children ||= values.select { |v| v.is_a?(Node) }
end

#columns(query, local_type = nil) ⇒ Object 



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# File 'lib/conceptql/nodes/node.rb', line 56

def columns(query, local_type = nil)
  criterion_type = :criterion_type
  if local_type
    criterion_type = Sequel.cast_string(local_type.to_s).as(:criterion_type)
  end
  columns = [:person_id,
              type_id(local_type),
              criterion_type]
  columns += date_columns(query, local_type)
  columns += value_columns(query)
end

#evaluate(db) ⇒ Object 



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# File 'lib/conceptql/nodes/node.rb', line 27

def evaluate(db)
  select_it(query(db))
end

#select_it(query, specific_type = nil) ⇒ Object 



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# File 'lib/conceptql/nodes/node.rb', line 35

def select_it(query, specific_type = nil)
  specific_type = type if specific_type.nil? && respond_to?(:type)
  query.select(*columns(query, specific_type))
end

#sql(db) ⇒ Object 



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# File 'lib/conceptql/nodes/node.rb', line 31

def sql(db)
  evaluate(db).sql
end

#stream ⇒ Object 



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# File 'lib/conceptql/nodes/node.rb', line 48

def stream
  @stream ||= children.first
end

#types ⇒ Object 



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# File 'lib/conceptql/nodes/node.rb', line 40

def types
  @types ||= determine_types
end