Module: Clusta::Serialization::JSON

Included in:
Geometry::Element
Defined in:
lib/clusta/serialization/json.rb

Defined Under Namespace

Modules: ClassMethods

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(klass) ⇒ Object 



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# File 'lib/clusta/serialization/json.rb', line 72

def self.included klass
  klass.extend(ClassMethods)
end

Instance Method Details

#non_key_field_data ⇒ Object 



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# File 'lib/clusta/serialization/json.rb', line 28

def non_key_field_data
  {}.tap do |data|
    non_key_fields.each do |field|
      value = send(field[:name])
      value = value.to_hash if value.respond_to?(:to_hash)
      data[field[:name]] = value unless value.nil? && field[:optional]
    end
  end
end

#process_args(*args) ⇒ Object 



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# File 'lib/clusta/serialization/json.rb', line 38

def process_args *args
  json_index = 0
  self.class.keys.each_with_index do |key, index|
    self.send("#{key[:name]}=", args[index])
    json_index = index + 1
  end

  if args[json_index]
    if args[json_index].is_a?(Hash)
      data = args[json_index]
    else
      data = ::JSON.parse(args[json_index])
    end
  else
    data = {}
  end

  non_key_fields.each do |field|
    name = field[:name].to_s
    case 
    when field[:optional]
      self.send("#{name}=", data[name]) if data.has_key?(name)
    when (!data.has_key?(name))
      raise ArgumentError.new("A #{self.class} requires a non-nil value for #{name}.")
    when field[:type] == :geometry
      self.send("#{name}=", data[name])
    else
      self.send("#{name}=", data[name])
    end
  end
  
  self.extra_inputs = (args[(json_index + 1)..-1] || [])
end

#to_flat ⇒ Object 



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# File 'lib/clusta/serialization/json.rb', line 17

def to_flat
  [stream_name].tap do |record|
    keys.each do |key|
      record << self.send(key[:name])
    end
    data = non_key_field_data
    record << data.to_json unless data.empty?
    record.concat(extra_outputs)
  end
end

#to_hash ⇒ Object 



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# File 'lib/clusta/serialization/json.rb', line 7

def to_hash
  {}.tap do |json|
    fields.each do |field|
      value = send(field[:name])
      value = value.to_hash if value.respond_to?(:to_hash)
      json[field[:name]] = value
    end
  end
end