Module: RTM::Merging::Name

Defined in:

lib/rtm/activerecord/merging.rb

Instance Method Summary

• #merge(other) ⇒ Object

Instance Method Details

#merge(other) ⇒ Object

# File 'lib/rtm/activerecord/merging.rb', line 239

def merge(other)
  # The procedure for merging two topic name items A and B is given below.
  # -> we will instead just modify a

  # 1. Create a new topic name item C.
  # 2. Set C's [value] property to the value of the [value] property of A. B's value is equal that of A and need not be taken into account.
  # 3. Set C's [type] property to the value of the [type] property of A. B's value is equal that of A and need not be taken into account.
  # 4. Set C's [scope] property to the value of the [scope] property of A. B's value is equal that of A and need not be taken into account.
  # -> nothing to do till here

  # 5. Set C's [variants] property to the union of the [variants] properties of A and B.
  #self.variants.add_all other.variants
  count = RTM::AR::TMDM::Variant.move_all(["name_id", other.__getobj__.id, self.__getobj__.id])
  if count != 0 && count != variants.size
    variants.each_with_index do |v,i|
      (i+1).upto(variants.size-1) do |j|
        if v == variants[j]
          v.merge variants[j]
        end
      end
    end
  end

  # 6. Set C's [reifier] property to the value of A's [reifier] property if it is not null, and to the value of B's [reifier] property if A's property is null. If both A and B have non-null values, the topic items shall be merged, and the topic item resulting from the merge be set as the value of C's [reifier] property.
  self.merge_reifiable other

  # 7. Set C's [item identifiers] property to the union of the value of the [item identifiers] properties of A and B.
  self.merge_item_identifiers other

  # 8. Remove A and B from the [topic names] property of the topic item in their [parent] properties, and add C.
  #self.parent.names.remove other

  # let the wrapper point to the new object
  #other.__setobj__(self.__getobj__) if self.respond_to?(:__getobj__) && other.respond_to?(:__setobj__)
  self.merge_rewrap other

  self
end