Class: Metaschema::ModelGenerator::FieldFactory

Inherits:
Object
  • Object
show all
Defined in:
lib/metaschema/model_generator/field_factory.rb

Overview

Creates field classes from Metaschema field definitions. Each field class inherits from Lutaml::Model::Serializable and includes XML + JSON mappings for the field’s content and flags.

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(field_def, generator) ⇒ FieldFactory

Returns a new instance of FieldFactory.



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# File 'lib/metaschema/model_generator/field_factory.rb', line 9

def initialize(field_def, generator)
  @field_def = field_def
  @g = generator
end

Class Method Details

.apply_markup_attributes(klass) ⇒ Object

Add inline markup attributes (a, code, em, etc.) for markup-line fields.



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# File 'lib/metaschema/model_generator/field_factory.rb', line 99

def apply_markup_attributes(klass)
  klass.attribute :content, :string, collection: true
  klass.attribute :a, AnchorType, collection: true
  klass.attribute :insert, InsertType, collection: true
  klass.attribute :br, :string, collection: true
  klass.attribute :code, CodeType, collection: true
  klass.attribute :em, InlineMarkupType, collection: true
  klass.attribute :i, InlineMarkupType, collection: true
  klass.attribute :b, InlineMarkupType, collection: true
  klass.attribute :strong, InlineMarkupType, collection: true
  klass.attribute :sub, InlineMarkupType, collection: true
  klass.attribute :sup, InlineMarkupType, collection: true
  klass.attribute :q, InlineMarkupType, collection: true
  klass.attribute :img, ImageType, collection: true
end

.apply_markup_multiline_attributes(klass) ⇒ Object

Add block-level markup attributes (p, h1-h6, ul, etc.) for markup-multiline fields.



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# File 'lib/metaschema/model_generator/field_factory.rb', line 116

def apply_markup_multiline_attributes(klass)
  apply_markup_attributes(klass)
  klass.attribute :p, InlineMarkupType, collection: true
  klass.attribute :h1, InlineMarkupType, collection: true
  klass.attribute :h2, InlineMarkupType, collection: true
  klass.attribute :h3, InlineMarkupType, collection: true
  klass.attribute :h4, InlineMarkupType, collection: true
  klass.attribute :h5, InlineMarkupType, collection: true
  klass.attribute :h6, InlineMarkupType, collection: true
  klass.attribute :ul, ListType, collection: true
  klass.attribute :ol, OrderedListType, collection: true
  klass.attribute :pre, PreformattedType, collection: true
  klass.attribute :hr, :string, collection: true
  klass.attribute :blockquote, BlockQuoteType, collection: true
  klass.attribute :table, TableType, collection: true
end

Instance Method Details

#create ⇒ Object 



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# File 'lib/metaschema/model_generator/field_factory.rb', line 14

def create
  fd = @field_def
  return unless fd.name

  klass_name = "Field_#{fd.name.gsub('-', '_')}"
  klass = Class.new(Lutaml::Model::Serializable)
  @g.classes[klass_name] = klass

  is_markup = TypeMapper.markup?(fd.as_type)
  is_multiline = TypeMapper.multiline?(fd.as_type)
  content_type = TypeMapper.map(fd.as_type)

  if is_multiline
    self.class.apply_markup_multiline_attributes(klass)
  elsif is_markup
    self.class.apply_markup_attributes(klass)
  elsif fd.collapsible == "yes"
    klass.attribute :content, content_type, collection: true
  else
    klass.attribute :content, content_type
  end

  fd.define_flag&.each { |f| @g.add_inline_flag(klass, f) }
  fd.flag&.each { |f| @g.add_flag_reference(klass, f) }

  build_field_xml(klass, fd.name, is_markup || is_multiline,
                  fd, is_multiline)
  build_field_json(klass, fd)

  has_flags = fd.define_flag&.any? || fd.flag&.any?
  has_json_vk = fd.json_value_key || fd.json_value_key_flag
  is_collapsible = fd.collapsible == "yes"
  value_key = fd.json_value_key || TypeMapper.json_value_key(fd.as_type)

  klass.define_singleton_method(:of_json) do |data|
    if data.is_a?(String)
      new(content: data)
    else
      super(data)
    end
  end

  klass.define_singleton_method(:from_json) do |data|
    if data.is_a?(String)
      new(content: data)
    else
      super(data)
    end
  end

  if has_flags || has_json_vk || is_collapsible
    flag_attr_names = (fd.define_flag || []).filter_map do |f|
      Utils.safe_attr(f.name) if f.name
    end +
      (fd.flag || []).filter_map do |f|
        Utils.safe_attr(f.ref) if f.ref
      end

    orig_as_json = klass.method(:as_json)
    klass.define_singleton_method(:as_json) do |instance, options = {}|
      result = orig_as_json.call(instance, options)

      if is_collapsible && result.is_a?(Hash) && result[value_key].is_a?(Array) && result[value_key].length == 1
        result[value_key] = result[value_key].first
      end

      if (has_flags || has_json_vk) && result.is_a?(Hash) && result.key?(value_key)
        flags_present = flag_attr_names.any? do |attr|
          val = instance.send(attr)
          val && !(val.respond_to?(:using_default?) && val.using_default?)
        end
        unless flags_present
          return result[value_key]
        end
      end

      result
    end
  end

  @g.apply_constraint_validation(klass, fd.constraint)
end