Class: Lutaml::Xml::Mapper

Inherits:
Shale::Mapper
  • Object
show all
Defined in:
lib/lutaml/xml/mapper.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*args) ⇒ Mapper

Returns a new instance of Mapper.



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# File 'lib/lutaml/xml/mapper.rb', line 441

def initialize(*args)
  @all_content = []

  super
end

Instance Attribute Details

#all_content ⇒ Object

rubocop:enable Metrics/AbcSize rubocop:enable Metrics/MethodLength rubocop:enable Metrics/BlockLength rubocop:enable Metrics/CyclomaticComplexity rubocop:enable Metrics/PerceivedComplexity



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# File 'lib/lutaml/xml/mapper.rb', line 439

def all_content
  @all_content
end

Class Method Details

.as_xml(instance, node_name = nil, doc = nil, _cdata = nil, only: nil, except: nil, context: nil, version: nil) ⇒ ::REXML::Document, ...

Convert Object to XML document

Parameters:

  • instance (any) —

    Object to convert

  • node_name (String, nil) (defaults to: nil) —

    XML node name

  • doc (Shale::Adapter::<xml adapter>::Document, nil) (defaults to: nil) —

    Object to convert

  • only (Array<Symbol>) (defaults to: nil)
  • except (Array<Symbol>) (defaults to: nil)
  • context (any) (defaults to: nil)

Returns:

  • (::REXML::Document, ::Nokogiri::Document, ::Ox::Document)

Raises:

  • (IncorrectModelError) 


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# File 'lib/lutaml/xml/mapper.rb', line 204

def as_xml(
  instance,
  node_name = nil,
  doc = nil,
  _cdata = nil,
  only: nil,
  except: nil,
  context: nil,
  version: nil
)
  unless instance.is_a?(model)
    msg = "argument is a '#{instance.class}' but should be a '#{model}'"
    raise IncorrectModelError, msg
  end

  unless doc
    doc = Shale.xml_adapter.create_document(version)

    element = as_xml(
      instance,
      xml_mapping.prefixed_root,
      doc,
      only: only,
      except: except,
      context: context,
    )
    doc.add_element(doc.doc, element)

    return doc.doc
  end

  element = doc.create_element(node_name)

  doc.add_namespace(
    xml_mapping.default_namespace.prefix,
    xml_mapping.default_namespace.name,
  )

  grouping = Shale::Mapping::Group::XmlGrouping.new

  only = to_partial_render_attributes(only)
  except = to_partial_render_attributes(except)

  # rubocop:disable Metrics/BlockNesting
  xml_mapping.attributes.each_value do |mapping|
    if mapping.group
      grouping.add(mapping, :attribute, nil)
    elsif mapping.method_to
      mapper = new

      if mapper.method(mapping.method_to).arity == 4
        mapper.send(mapping.method_to, instance, element, doc, context)
      else
        mapper.send(mapping.method_to, instance, element, doc)
      end
    else
      receiver = if mapping.receiver
                   instance.send(mapping.receiver)
                 else
                   instance
                 end

      receiver_attributes = get_receiver_attributes(mapping)
      attribute = receiver_attributes[mapping.attribute]
      next unless attribute

      next if only && !only.key?(attribute.name)
      next if except&.key?(attribute.name)

      value = receiver.send(attribute.name) if receiver

      if mapping.render_nil? || !value.nil?
        doc.add_namespace(mapping.namespace.prefix,
                          mapping.namespace.name)
        doc.add_attribute(element, mapping.prefixed_name, value)
      end
    end
  end
  # rubocop:enable Metrics/BlockNesting

  # rubocop:disable Metrics/BlockNesting
  instance.all_content.each do |mapping, content|
    if mapping == "comment"
      comment = Nokogiri::XML::Comment.new(doc.doc, content)
      doc.add_element(element, comment)
    elsif mapping == "content"
      content_mapping = xml_mapping.content
      if content_mapping
        if content_mapping.group
          grouping.add(content_mapping, :content, nil)
        elsif content_mapping.method_to
          mapper = new

          if mapper.method(content_mapping.method_to).arity == 4
            mapper.send(content_mapping.method_to, instance, element,
                        doc, context)
          else
            mapper.send(content_mapping.method_to, instance, element, doc)
          end
        else
          receiver_attributes = get_receiver_attributes(content_mapping)
          attribute = receiver_attributes[content_mapping.attribute]

          if attribute
            skip = false

            skip = true if only && !only.key?(attribute.name)
            skip = true if except&.key?(attribute.name)

            unless skip
              # value = receiver.send(attribute.name) if receiver
              value = content

              if content_mapping.cdata
                doc.create_cdata(value, element)
              else
                a = Nokogiri::XML::Text.new(value, doc.doc)
                doc.add_element(element, a)
              end
            end
          end
        end
      end
    elsif mapping.group
      grouping.add(mapping, :element, nil)
    elsif mapping.method_to
      mapper = new

      if mapper.method(mapping.method_to).arity == 4
        mapper.send(mapping.method_to, instance, element, doc, context)
      else
        mapper.send(mapping.method_to, instance, element, doc)
      end
    else
      receiver_attributes = get_receiver_attributes(mapping)
      attribute = receiver_attributes[mapping.attribute]
      next unless attribute

      if only
        attribute_only = only[attribute.name]
        next unless only.key?(attribute.name)
      end

      if except
        attribute_except = except[attribute.name]
        next if except.key?(attribute.name) && attribute_except.nil?
      end

      value = content

      if mapping.render_nil? || !value.nil?
        doc.add_namespace(mapping.namespace.prefix,
                          mapping.namespace.name)
      end

      if value.nil?
        if mapping.render_nil?
          child = doc.create_element(mapping.prefixed_name)
          doc.add_element(element, child)
        end
      elsif attribute.collection?
        [*value].each do |v|
          next if v.nil?

          child = attribute.type.as_xml(
            v,
            mapping.prefixed_name,
            doc,
            mapping.cdata,
            only: attribute_only,
            except: attribute_except,
            context: context,
          )
          doc.add_element(element, child)
        end
      else
        child = attribute.type.as_xml(
          value,
          mapping.prefixed_name,
          doc,
          mapping.cdata,
          only: attribute_only,
          except: attribute_except,
          context: context,
        )
        doc.add_element(element, child)
      end
    end
  end
  # rubocop:enable Metrics/BlockNesting

  grouping.each do |group|
    mapper = new

    if mapper.method(group.method_to).arity == 4
      mapper.send(group.method_to, instance, element, doc, context)
    else
      mapper.send(group.method_to, instance, element, doc)
    end
  end

  element
end

.get_content_value(content_mapping, element, only, except, delegates, instance) ⇒ Object 



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# File 'lib/lutaml/xml/mapper.rb', line 408

def get_content_value(content_mapping, element, only, except, delegates, instance)
  receiver_attributes = get_receiver_attributes(content_mapping)
  attribute = receiver_attributes[content_mapping.attribute]

  if attribute
    skip = false

    # rubocop:disable Metrics/BlockNesting
    skip = true if only && !only.key?(attribute.name)
    skip = true if except&.key?(attribute.name)

    unless skip
      value = attribute.type.cast(attribute.type.of_xml(element))

      if content_mapping.receiver
        delegates.add(attributes[content_mapping.receiver],
                      attribute.setter, value)
      else
        instance.send(attribute.setter, value)
      end
    end
    # rubocop:enable Metrics/BlockNesting
  end
end

.of_xml(element, only: nil, except: nil, context: nil) ⇒ model instance

Convert XML document to Object

Parameters:

  • element (Shale::Adapter::<XML adapter>::Node)
  • only (Array<Symbol>) (defaults to: nil)
  • except (Array<Symbol>) (defaults to: nil)
  • context (any) (defaults to: nil)

Returns:

  • (model instance) 


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# File 'lib/lutaml/xml/mapper.rb', line 22

def of_xml(element, only: nil, except: nil, context: nil)
  instance = model.new

  attributes
    .values
    .select(&:default)
    .each { |attr| instance.send(attr.setter, attr.default.call) }

  grouping = Shale::Mapping::Group::XmlGrouping.new
  delegates = Shale::Mapping::Delegates.new

  only = to_partial_render_attributes(only)
  except = to_partial_render_attributes(except)

  element.attributes.each do |key, value|
    mapping = xml_mapping.attributes[key.to_s]
    next unless mapping

    if mapping.group
      grouping.add(mapping, :attribute, value)
    elsif mapping.method_from
      mapper = new

      if mapper.method(mapping.method_from).arity == 3
        mapper.send(mapping.method_from, instance, value, context)
      else
        mapper.send(mapping.method_from, instance, value)
      end
    else
      receiver_attributes = get_receiver_attributes(mapping)
      attribute = receiver_attributes[mapping.attribute]
      next unless attribute

      next if only && !only.key?(attribute.name)
      next if except&.key?(attribute.name)

      casted_value = attribute.type.cast(value)

      if attribute.collection?
        if mapping.receiver
          delegates.add_collection(
            attributes[mapping.receiver],
            attribute.setter,
            casted_value,
          )
        else
          instance.send(attribute.name) << casted_value
        end
      elsif mapping.receiver
        delegates.add(attributes[mapping.receiver], attribute.setter,
                      casted_value)
      else
        instance.send(attribute.setter, casted_value)
      end
    end
  end

  content_mapping = xml_mapping.content

  if content_mapping
    if content_mapping.group
      grouping.add(content_mapping, :content, element)
    elsif content_mapping.method_from
      mapper = new

      if mapper.method(content_mapping.method_from).arity == 3
        mapper.send(content_mapping.method_from, instance, element,
                    context)
      else
        mapper.send(content_mapping.method_from, instance, element)
      end
    else
      get_content_value(content_mapping, element, only, except,
                        delegates, instance)
    end
  end

  # rubocop:disable Metrics/BlockNesting
  element.instance_variable_get(:@node)&.children&.each do |nokogiri_node|
    if nokogiri_node.name == "text"
      content_value = get_content_value(content_mapping, nokogiri_node,
                                        only, except, delegates, instance)
      instance.all_content << ["content", content_value]
      next
    elsif nokogiri_node.name == "comment"
      instance.all_content << ["comment", nokogiri_node.text]
      next
    end

    node = element.class.new(nokogiri_node)
    mapping = xml_mapping.elements[node.name]

    next unless mapping

    if mapping.group
      grouping.add(mapping, :element, node)
    elsif mapping.method_from
      mapper = new

      if mapper.method(mapping.method_from).arity == 3
        mapper.send(mapping.method_from, instance, node, context)
      else
        mapper.send(mapping.method_from, instance, node)
      end
    else
      receiver_attributes = get_receiver_attributes(mapping)
      attribute = receiver_attributes[mapping.attribute]
      next unless attribute

      if only
        attribute_only = only[attribute.name]
        next unless only.key?(attribute.name)
      end

      if except
        attribute_except = except[attribute.name]
        next if except.key?(attribute.name) && attribute_except.nil?
      end

      value = attribute.type.of_xml(
        node,
        only: attribute_only,
        except: attribute_except,
        context: context,
      )

      casted_value = attribute.type.cast(value)
      instance.all_content << [mapping, casted_value]

      if attribute.collection?
        if mapping.receiver
          delegates.add_collection(
            attributes[mapping.receiver],
            attribute.setter,
            casted_value,
          )
        else
          instance.send(attribute.name) << casted_value
        end
      elsif mapping.receiver
        delegates.add(attributes[mapping.receiver], attribute.setter,
                      casted_value)
      else
        instance.send(attribute.setter, casted_value)
      end
    end
  end
  # rubocop:enable Metrics/BlockNesting

  delegates.each do |delegate|
    receiver = get_receiver(instance, delegate.receiver_attribute)
    receiver.send(delegate.setter, delegate.value)
  end

  grouping.each do |group|
    mapper = new

    if mapper.method(group.method_from).arity == 3
      mapper.send(group.method_from, instance, group.dict, context)
    else
      mapper.send(group.method_from, instance, group.dict)
    end
  end

  instance
end