Class: MongoQL::Stage::Lookup::NestedPipelineVars

Inherits:
Object
  • Object
show all
Defined in:
lib/mongo_ql/stage/lookup.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ NestedPipelineVars

Returns a new instance of NestedPipelineVars.



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# File 'lib/mongo_ql/stage/lookup.rb', line 8

def initialize
  @vars = {}
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(m, *args, &block) ⇒ Object 



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# File 'lib/mongo_ql/stage/lookup.rb', line 12

def method_missing(m, *args, &block)
  if is_setter?(m)
    set(m, args.first)
  else
    get(m)
  end
end

Instance Attribute Details

#vars ⇒ Object

Returns the value of attribute vars.



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# File 'lib/mongo_ql/stage/lookup.rb', line 6

def vars
  @vars
end

Instance Method Details

#get(name) ⇒ Object 



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# File 'lib/mongo_ql/stage/lookup.rb', line 20

def get(name)
  vars["var_#{name}"] ||= Expression::FieldNode.new(name)
  Expression::FieldNode.new("$var_#{name}")
end

#set(name, val) ⇒ Object 



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# File 'lib/mongo_ql/stage/lookup.rb', line 25

def set(name, val)
  vars["var_#{name.to_s[0..-2]}"] = val
end