Class: Handle::Record

Inherits:
Object
  • Object
show all
Defined in:
lib/handle/record.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(fields = []) ⇒ Record

Returns a new instance of Record.



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# File 'lib/handle/record.rb', line 15

def initialize(fields=[])
  initialize_with(fields)
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

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



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# File 'lib/handle/record.rb', line 75

def method_missing(sym, *args, &block)
  if @fields.respond_to?(sym)
    @fields.send(sym, *args, &block)
  else
    super
  end
end

Instance Attribute Details

#fields ⇒ Object (readonly)

Returns the value of attribute fields.



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# File 'lib/handle/record.rb', line 3

def fields
  @fields
end

Class Method Details

.from_data(data) ⇒ Object 



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# File 'lib/handle/record.rb', line 5

def self.from_data(data)
  result = self.new
  if data.is_a?(String)
    data.lines.each { |line| result << Handle::Field::Base.from_data(line) }
  else
    data.each { |field| result << Handle::Field::Base.from_data(field) }
  end
  result
end

Instance Method Details

#<<(field) ⇒ Object 



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# File 'lib/handle/record.rb', line 35

def <<(field)
  fields << field if field.kind_of?(Handle::Field::Base)
end

#==(other) ⇒ Object 



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# File 'lib/handle/record.rb', line 70

def ==(other)
  self.class == other.class &&
  self.to_a == other.to_a
end

#add(field_type, value = nil) ⇒ Object 



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# File 'lib/handle/record.rb', line 39

def add(field_type, value=nil)
  field = Handle::Field.const_get(field_type).new
  indexed_fields = fields.select { |f| f.index < 100 }.sort { |a,b| b.index <=> a.index }
  if indexed_fields.empty?
    field.index = 1
  else
    field.index = indexed_fields.first.index + 1
  end
  field.value = value
  fields << field
  field
end

#find_by_index(index) ⇒ Object 



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# File 'lib/handle/record.rb', line 52

def find_by_index(index)
  self.find { |field| field.index == index }
end

#initialize_with(fields) ⇒ Object 



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# File 'lib/handle/record.rb', line 19

def initialize_with(fields)
  @fields = fields
end

#to_a ⇒ Object 



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# File 'lib/handle/record.rb', line 23

def to_a
  @fields
end

#to_json(*args) ⇒ Object 



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# File 'lib/handle/record.rb', line 27

def to_json *args
  to_a.to_json *args
end

#to_s ⇒ Object 



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# File 'lib/handle/record.rb', line 31

def to_s
  fields.collect(&:to_s).join("\n")
end

#|(other) ⇒ Object 



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# File 'lib/handle/record.rb', line 56

def |(other)
  result = { add: Record.new, update: Record.new, delete: Record.new }
  my_ixs = self.collect(&:index).sort
  other.each do |field|
    if my_ixs.delete(field.index)
      result[:update] << field
    else
      result[:add] << field
    end
  end
  my_ixs.each { |ix| result[:delete] << self.find_by_index(ix) }
  result
end