Class: Wonkavision::MessageMapper::Map

Inherits:
Hash
  • Object
show all
Includes:
IndifferentAccess
Defined in:
lib/wonkavision/message_mapper/map.rb

Instance Method Summary collapse

Methods included from IndifferentAccess

#[], #[]=, #delete, #include?, #method_missing

Constructor Details

#initialize(context = nil) ⇒ Map

Returns a new instance of Map.



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# File 'lib/wonkavision/message_mapper/map.rb', line 7

def initialize(context = nil)
  @write_nils = true
  @context_stack = []
  @context_stack.push(context) if context
  @formats = default_formats
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Wonkavision::MessageMapper::IndifferentAccess

Instance Method Details

#array(source, options = {}, &block) ⇒ Object 



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# File 'lib/wonkavision/message_mapper/map.rb', line 76

def array(source,options={},&block)
  if (source.is_a?(Hash))
    field_name = source.keys[0]
    ctx = source[field_name]
  else
    field_name = source
    ctx = extract_value_from_context(context,field_name)
  end
  result = []
  ctx = [ctx].compact.flatten
  map_name = options.delete(:map_name)
  ctx.each do |item|
    if (map_name)
      child = MessageMapper.execute(map_name,item)
    else
      child = Map.new(item)
      child.instance_eval(&block)
    end
    result << child
  end
  set_value(field_name,result,options)
end

#boolean(*args) ⇒ Object 



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# File 'lib/wonkavision/message_mapper/map.rb', line 172

def boolean(*args)
  value(*args) do
    %w(true yes).include?(to_s.downcase) ? true : false
  end
end

#child(source, options = {}, &block) ⇒ Object 



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# File 'lib/wonkavision/message_mapper/map.rb', line 54

def child(source,options={},&block)
  raise "Neither a block nor a map_name were provided to 'map'" unless (block || options.keys.include?(:map_name))
  if (source.is_a?(Hash))
    field_name = source.keys[0]
    ctx = source[field_name]
  else
    field_name = source
    ctx = extract_value_from_context(context,field_name)
  end
  if ctx
    if (map_name = options.delete(:map_name))
      child = MessageMapper.execute(map_name,ctx)
    else
      child = Map.new(ctx)
      child.instance_eval(&block)
    end
  else
    child = {}
  end
  set_value(field_name,child,options)
end

#context ⇒ Object 



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# File 'lib/wonkavision/message_mapper/map.rb', line 26

def context
  @context_stack[-1]
end

#date(*args) ⇒ Object 



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# File 'lib/wonkavision/message_mapper/map.rb', line 154

def date(*args)
  value(*args) do
    if kind_of?(Date)
      self
    elsif respond_to?(:to_date)
      to_date
    elsif (date_str=to_s) && date_str.length > 0
      begin
        Date.parse(date_str)
      rescue
        self
      end
    else
      self
    end
  end
end

#dollars(*args) ⇒ Object Also known as: dollar 



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# File 'lib/wonkavision/message_mapper/map.rb', line 107

def dollars(*args)
  args = add_options(args,:format=>:dollars)
  float(*args)
end

#duration(*args, &block) ⇒ Object Also known as: elapsed 



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# File 'lib/wonkavision/message_mapper/map.rb', line 200

def duration(*args, &block)
  opts = args.extract_options! || {}

  from = opts.delete(:from)
  to = opts.delete(:to)

  return nil unless from || to

  from ||= Time.now; to ||= Time.now

  unit = opts.delete(:in) || opts.delete(:unit) || :seconds

  duration = convert_seconds(to-from,unit)

  assignment = {args.shift => duration}
  args << assignment << opts

  value(*args, &block)

end

#exec(map_name, exec_context = self.context) ⇒ Object Also known as: import, apply 



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# File 'lib/wonkavision/message_mapper/map.rb', line 47

def exec(map_name,exec_context=self.context)
  mapped = MessageMapper.execute(map_name,exec_context)
  self.merge!(mapped) if mapped
end

#execute(context, map_block, options = {}) ⇒ Object 



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# File 'lib/wonkavision/message_mapper/map.rb', line 14

def execute(context,map_block,options={})
  @write_nils = options[:write_nils].nil? ? true : options[:write_nils]
  @context_stack.push(context)
  instance_eval(&map_block)
  @context_stack.clear
  self
end

#float(*args) ⇒ Object 



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# File 'lib/wonkavision/message_mapper/map.rb', line 103

def float(*args)
  value(*args){respond_to?(:to_f) ? to_f : self}
end

#formats ⇒ Object 



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# File 'lib/wonkavision/message_mapper/map.rb', line 22

def formats
  @formats
end

#from(context, &block) ⇒ Object 



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# File 'lib/wonkavision/message_mapper/map.rb', line 38

def from (context,&block)
  raise "No block ws provided to 'from'" unless block
  return if context.nil?

  @context_stack.push(context)
  instance_eval(&block)
  @context_stack.pop
end

#ignore_nil! ⇒ Object 



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# File 'lib/wonkavision/message_mapper/map.rb', line 30

def ignore_nil!
  @write_nils = false
end

#int(*args) ⇒ Object Also known as: integer 



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# File 'lib/wonkavision/message_mapper/map.rb', line 178

def int(*args)
  value(*args){respond_to?(:to_i) ? to_i : self}
end

#iso8601(*args) ⇒ Object 



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# File 'lib/wonkavision/message_mapper/map.rb', line 124

def iso8601(*args)
  value(*args) do
    if respond_to?(:strftime)
      strftime("%Y-%m-%dT%H:%M:%S")
    elsif respond_to?(:ToString)
      ToString("yyyy-MM-ddTHH:mm:ss")
    else
      self
    end
  end
end

#percent(*args) ⇒ Object Also known as: percentage 



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# File 'lib/wonkavision/message_mapper/map.rb', line 113

def percent(*args)
  args = add_options(args,:format=>:percent)
  float(*args)
end

#string(*args) ⇒ Object 



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# File 'lib/wonkavision/message_mapper/map.rb', line 99

def string(*args)
  value(*args) {to_s}
end

#time(*args) ⇒ Object 



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# File 'lib/wonkavision/message_mapper/map.rb', line 136

def time(*args)
  value(*args) do
    if kind_of?(Time)
      self
    elsif respond_to?(:to_time)
      to_time
    elsif (time_str=to_s) && time_str.length > 0
      begin
        Time.parse(time_str)
      rescue
        self
      end
    else
      self
    end
  end
end

#value(*args, &block) ⇒ Object 



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# File 'lib/wonkavision/message_mapper/map.rb', line 183

def value(*args,&block)
  opts = args.length > 1 ? args.extract_options! : {}

  if (args.length == 1 && args[0].is_a?(Hash))
    args[0].each do |key,value|
      value = context.instance_eval(&value) if value.is_a?(Proc)
      value = value.instance_eval(&block) if block
      set_value(key,value,opts)
    end
  else
    args.each do |field_name|
      value = extract_value_from_context(context,field_name,block)
      set_value(field_name,value,opts)
    end
  end
end

#write_nil! ⇒ Object 



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# File 'lib/wonkavision/message_mapper/map.rb', line 34

def write_nil!
  @write_nils = true
end

#yes_no(*args) ⇒ Object 



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# File 'lib/wonkavision/message_mapper/map.rb', line 119

def yes_no(*args)
  args = add_options(args,:format=>:yes_no)
  value(*args)
end