Class: Qipowl::Mappers::Mapper

Inherits:
Object
  • Object
show all
Defined in:
lib/qipowl/core/mapper.rb

Overview

Operates +mapping+ for loaded +YAML+ rules files.

  • For top level sections, each section name should have the corresponding method within Mapping class; default is [:includes] which is processed with #includes method which is simply loads rules from the respective file

Mapping may be loaded from YAML file, as well as be merged against other YAML file, hash or Ruler instance.

Direct Known Subclasses

BowlerMapper

Instance Method Summary collapse

Constructor Details

#initialize(input = nil) ⇒ Mapper

Returns a new instance of Mapper.



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# File 'lib/qipowl/core/mapper.rb', line 22

def initialize input = nil
  @hash = {}
  merge!(input) unless input.nil?
end

Instance Method Details

#load_yaml(input) ⇒ Object (private)

FIXME Make file search more flexible!!!



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# File 'lib/qipowl/core/mapper.rb', line 44

def load_yaml input
  IO === input ?
    YAML.load_stream(input) :
    YAML.load_file("#{Qipowl.bowlers_dir}/#{input.downcase}.yaml")
end

#merge!(input) ⇒ Object 



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# File 'lib/qipowl/core/mapper.rb', line 29

def merge! input
  input = load_yaml(input) if input.is_one_of?(String, IO)
  raise ArgumentError.new "Invalid map for merge in Mapper" \
    unless input.respond_to? :to_hash        

  incs = input.delete(:includes)

  @entities_dirty = true
  @hash.rmerge!(input.to_hash)
  incs.each { |inc|
    merge! inc
  } rescue NoMethodError
end

#to_hash ⇒ Object 



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# File 'lib/qipowl/core/mapper.rb', line 26

def to_hash
  @hash
end