Class: Dentaku::AST::Pluck

Inherits:
Function show all
Defined in:
lib/dentaku/ast/functions/pluck.rb

Constant Summary

Constants inherited from Function

Function::DIG

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Function

#dependencies, get, #initialize, numeric, register, register_class, registry

Methods inherited from Node

arity, #dependencies, peek, precedence, #type

Constructor Details

This class inherits a constructor from Dentaku::AST::Function

Class Method Details

.max_param_count ⇒ Object 



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# File 'lib/dentaku/ast/functions/pluck.rb', line 11

def self.max_param_count
  2
end

.min_param_count ⇒ Object 



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# File 'lib/dentaku/ast/functions/pluck.rb', line 7

def self.min_param_count
  2
end

Instance Method Details

#deferred_args ⇒ Object 



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# File 'lib/dentaku/ast/functions/pluck.rb', line 15

def deferred_args
  [1]
end

#value(context = {}) ⇒ Object 



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# File 'lib/dentaku/ast/functions/pluck.rb', line 19

def value(context = {})
  collection = @args[0].value(context)
  pluck_path = @args[1].identifier

  collection.map { |h| h.transform_keys(&:to_s)[pluck_path] }
end