Module: Lutaml::Model::Schema::XmlCompiler

Extended by:
XmlCompiler
Included in:
XmlCompiler
Defined in:
lib/lutaml/model/schema/xml_compiler.rb,
lib/lutaml/model/schema/xml_compiler/group.rb,
lib/lutaml/model/schema/xml_compiler/choice.rb,
lib/lutaml/model/schema/xml_compiler/element.rb,
lib/lutaml/model/schema/xml_compiler/sequence.rb,
lib/lutaml/model/schema/xml_compiler/attribute.rb,
lib/lutaml/model/schema/xml_compiler/restriction.rb,
lib/lutaml/model/schema/xml_compiler/simple_type.rb,
lib/lutaml/model/schema/xml_compiler/complex_type.rb,
lib/lutaml/model/schema/xml_compiler/simple_content.rb,
lib/lutaml/model/schema/xml_compiler/attribute_group.rb,
lib/lutaml/model/schema/xml_compiler/complex_content.rb,
lib/lutaml/model/schema/xml_compiler/registry_generator.rb,
lib/lutaml/model/schema/xml_compiler/xml_namespace_class.rb,
lib/lutaml/model/schema/xml_compiler/complex_content_restriction.rb

Defined Under Namespace

Classes: Attribute, AttributeGroup, Choice, ComplexContent, ComplexContentRestriction, ComplexType, Element, Group, RegistryGenerator, Restriction, Sequence, SimpleContent, SimpleType, XmlNamespaceClass

Constant Summary collapse

ELEMENT_ORDER_IGNORABLE = 
%w[import include].freeze
XML_ADAPTER_NOT_SET_MESSAGE = 
<<~MSG
  Nokogiri is not set as XML Adapter.
  Make sure Nokogiri is installed and set as XML Adapter eg.
  execute: gem install nokogiri
  require 'lutaml/xml'
  Lutaml::Model::Config.xml_adapter = :nokogiri
MSG
XML_DEFINED_ATTRIBUTES =

NOTE: These must be full class names (strings), not symbols like :xml_id. The type resolver looks up these strings directly in the type registry, and symbols would be interpreted as literal type names rather than W3C types.

{
  "id" => "Lutaml::Xml::W3c::XmlIdType",
  "lang" => "Lutaml::Xml::W3c::XmlLangType",
  "space" => "Lutaml::Xml::W3c::XmlSpaceType",
  "base" => "Lutaml::Xml::W3c::XmlBaseType",
}.freeze
XML_NAMESPACE_URI = 
"http://www.w3.org/XML/1998/namespace"

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#attribute_groups ⇒ Object (readonly)

Returns the value of attribute attribute_groups.



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 33

def attribute_groups
  @attribute_groups
end

#attributes ⇒ Object (readonly)

Returns the value of attribute attributes.



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 33

def attributes
  @attributes
end

#complex_types ⇒ Object (readonly)

Returns the value of attribute complex_types.



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 33

def complex_types
  @complex_types
end

#elements ⇒ Object (readonly)

Returns the value of attribute elements.



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 33

def elements
  @elements
end

#group_types ⇒ Object (readonly)

Returns the value of attribute group_types.



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 33

def group_types
  @group_types
end

#namespace_classes ⇒ Object (readonly)

Returns the value of attribute namespace_classes.



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 33

def namespace_classes
  @namespace_classes
end

#simple_types ⇒ Object (readonly)

Returns the value of attribute simple_types.



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 33

def simple_types
  @simple_types
end

Instance Method Details

#as_models(schema, options: {}) ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 173

def as_models(schema, options: {})
  unless Config.xml_adapter.name.end_with?("NokogiriAdapter")
    raise Error,
          XML_ADAPTER_NOT_SET_MESSAGE
  end

  parsed_schema = Lutaml::Xml::Schema::Xsd.parse(schema,
                                                 location: options[:location])

  @elements = MappingHash.new
  @attributes = MappingHash.new
  @group_types = MappingHash.new
  @simple_types = MappingHash.new
  @complex_types = MappingHash.new
  @attribute_groups = MappingHash.new
  @namespace_classes = MappingHash.new

  populate_default_values
  collect_namespaces(Array(parsed_schema), options)
  schema_to_models(Array(parsed_schema))
end

#collect_namespaces(schemas, options) ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 549

def collect_namespaces(schemas, options)
  # Collect unique namespace URIs from the schemas
  namespace_uris = Set.new

  # Add the main namespace from options if provided
  if options[:namespace]
    namespace_uris.add(options[:namespace])
  end

  # Extract namespaces from schema elements
  schemas.each do |schema|
    namespace_uris.add(schema.target_namespace) if schema.target_namespace
  end

  # Create XmlNamespaceClass for each unique namespace
  namespace_uris.each do |uri|
    next if uri.nil? || uri.empty?

    # Use provided prefix if available
    prefix = options[:prefix] if options[:namespace] == uri

    ns_class = XmlNamespaceClass.new(uri: uri, prefix: prefix)
    @namespace_classes[ns_class.class_name] = ns_class
  end
end

#create_file(name, content, dir) ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 139

def create_file(name, content, dir)
  name = name.split(":").last
  File.write("#{dir}/#{Utils.snake_case(name)}.rb", content)
end

#populate_default_values ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 195

def populate_default_values
  XML_DEFINED_ATTRIBUTES.each do |name, value|
    @attributes[name] = Attribute.new(name: name)
    @attributes[name].type = value
  end

  # W3C XmlNamespace is now auto-loaded via lutaml/model.rb
  # Reference: Lutaml::Xml::W3c::XmlNamespace
end

#require_classes(classes_hash) ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 144

def require_classes(classes_hash)
  Dir.mktmpdir do |dir|
    # Create subdirectory for class files (matches autoload path in registry)
    module_subdir = "generatedmodels"
    full_dir = File.join(dir, module_subdir)
    FileUtils.mkdir_p(full_dir)

    # Generate registry file first with autoload
    registry_content = RegistryGenerator.generate(classes_hash,
                                                  module_namespace: "GeneratedModels",
                                                  register_id: :default)
    if registry_content
      registry_file = File.join(dir, "registry.rb")
      File.write(registry_file, registry_content)
    end

    # Write class files to subdirectory
    classes_hash.each do |name, klass|
      create_file(name, klass, full_dir)
    end

    # Require the registry first to set up autoloads
    require "#{dir}/registry"

    # Call register_all to register all classes
    GeneratedModels.register_all if defined?(GeneratedModels)
  end
end

#resolved_element_order(object) ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 524

def resolved_element_order(object)
  return [] if object.element_order.nil?

  # If the object is an XSD type (which has its own resolved_element_order),
  # use it instead of processing element_order which returns generic XML elements
  if object.is_a?(Lutaml::Xml::Schema::Xsd::Base)
    return object.resolved_element_order
  end

  object.element_order.each_with_object(object.element_order.dup) do |builder_instance, array|
    next array.delete(builder_instance) if builder_instance.text? || ELEMENT_ORDER_IGNORABLE.include?(builder_instance.name)

    index = 0
    array.each_with_index do |element, i|
      next unless element == builder_instance

      array[i] =
        Array(object.public_send(Utils.snake_case(builder_instance.name)))[index]
      index += 1
    end
  end

  object.element_order
end

#restriction_content(instance, restriction) ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 253

def restriction_content(instance, restriction)
  restriction_min_max(restriction, instance, field: :max_length,
                                             value_method: :min)
  restriction_min_max(restriction, instance, field: :min_length,
                                             value_method: :max)
  restriction_min_max(restriction, instance, field: :min_inclusive,
                                             value_method: :max)
  restriction_min_max(restriction, instance, field: :max_inclusive,
                                             value_method: :min)
  restriction_min_max(restriction, instance, field: :max_exclusive,
                                             value_method: :max)
  restriction_min_max(restriction, instance, field: :min_exclusive,
                                             value_method: :min)
  instance.length = restriction_length(restriction.length) if restriction.length&.any?
end

#restriction_length(lengths) ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 281

def restriction_length(lengths)
  lengths.map do |length|
    MappingHash.new.tap do |hash|
      hash[:value] = length.value
      hash[:fixed] = length.fixed if length.fixed
    end
  end
end

#restriction_min_max(restriction, instance, field:, value_method: :min) ⇒ Object

Use min/max to get the value from the field_value array.



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 270

def restriction_min_max(restriction, instance, field:,
  value_method: :min)
  field_value = restriction.public_send(field)
  return unless field_value&.any?

  instance.public_send(
    :"#{field}=",
    field_value.map(&:value).public_send(value_method).to_s,
  )
end

#restriction_patterns(patterns, instance) ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 488

def restriction_patterns(patterns, instance)
  return if Utils.blank?(patterns)

  instance.pattern = patterns.map { |p| "(#{p.value})" }.join("|")
end

#schema_to_models(schemas) ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 205

def schema_to_models(schemas)
  return if schemas.empty?

  schemas.each do |schema|
    schema_to_models(schema.include) if schema.include&.any?
    schema_to_models(schema.import) if schema.import&.any?
    # Use schema's resolved_element_order which returns properly typed XSD objects
    schema.resolved_element_order.each do |order_item|
      item_name = order_item.name if order_item.is_a?(Lutaml::Xml::Schema::Xsd::SimpleType) ||
        order_item.is_a?(Lutaml::Xml::Schema::Xsd::Group) ||
        order_item.is_a?(Lutaml::Xml::Schema::Xsd::ComplexType) ||
        order_item.is_a?(Lutaml::Xml::Schema::Xsd::Element) ||
        order_item.is_a?(Lutaml::Xml::Schema::Xsd::Attribute) ||
        order_item.is_a?(Lutaml::Xml::Schema::Xsd::AttributeGroup)
      case order_item
      when Lutaml::Xml::Schema::Xsd::SimpleType
        @simple_types[item_name] = setup_simple_type(order_item)
      when Lutaml::Xml::Schema::Xsd::Group
        @group_types[item_name] =
          setup_group_type(order_item, root_call: true)
      when Lutaml::Xml::Schema::Xsd::ComplexType
        @complex_types[item_name] = setup_complex_type(order_item)
      when Lutaml::Xml::Schema::Xsd::Element
        @elements[item_name] = setup_element(order_item)
      when Lutaml::Xml::Schema::Xsd::Attribute
        next if xml_defined_attribute?(schema, item_name)

        @attributes[item_name] = setup_attribute(order_item)
      when Lutaml::Xml::Schema::Xsd::AttributeGroup
        @attribute_groups[item_name] =
          setup_attribute_groups(order_item)
      end
    end
  end
  nil
end

#setup_attribute(attribute) ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 383

def setup_attribute(attribute)
  instance = Attribute.new(name: attribute.name, ref: attribute.ref)
  if attribute.name
    instance.type = setup_attribute_type(attribute)
    instance.default = attribute.default
  end
  instance
end

#setup_attribute_groups(attribute_group) ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 402

def setup_attribute_groups(attribute_group)
  instance = AttributeGroup.new(name: attribute_group.name,
                                ref: attribute_group.ref)
  if attribute_group.name
    resolved_element_order(attribute_group).each do |object|
      group_attribute = case object
                        when Lutaml::Xml::Schema::Xsd::Attribute
                          setup_attribute(object)
                        when Lutaml::Xml::Schema::Xsd::AttributeGroup
                          setup_attribute_groups(object)
                        end
      instance << group_attribute if group_attribute
    end
  end
  instance
end

#setup_attribute_type(attribute) ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 392

def setup_attribute_type(attribute)
  return attribute.type if attribute.type

  simple_type = attribute.simple_type
  attr_name = "ST_#{attribute.name}"
  simple_type.name = attr_name
  @simple_types[attr_name] = setup_simple_type(simple_type)
  attr_name
end

#setup_choice(choice) ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 364

def setup_choice(choice)
  Choice.new.tap do |instance|
    instance.min_occurs = choice.min_occurs
    instance.max_occurs = choice.max_occurs
    resolved_element_order(choice).each do |element|
      instance << case element
                  when Lutaml::Xml::Schema::Xsd::Element
                    setup_element(element)
                  when Lutaml::Xml::Schema::Xsd::Sequence
                    setup_sequence(element)
                  when Lutaml::Xml::Schema::Xsd::Group
                    setup_group_type(element)
                  when Lutaml::Xml::Schema::Xsd::Choice
                    setup_choice(element)
                  end
    end
  end
end

#setup_complex_content(complex_content, name, compiler_complex_type) ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 494

def setup_complex_content(complex_content, name,
compiler_complex_type)
  @complex_types[name] = ComplexContent.new.tap do |instance|
    compiler_complex_type.mixed = complex_content.mixed
    if extension = complex_content.extension
      setup_extension(extension, compiler_complex_type)
    elsif restriction = complex_content.restriction
      instance.restriction = setup_complex_content_restriction(restriction, compiler_complex_type)
    end
  end
end

#setup_complex_content_restriction(restriction, compiler_complex_type) ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 462

def setup_complex_content_restriction(restriction,
  compiler_complex_type)
  ComplexContentRestriction.new.tap do |instance|
    compiler_complex_type.base_class = restriction.base
    resolved_element_order(restriction).each do |element|
      # For restrictions, only add attributes and attribute groups.
      # Sequence/choice/group elements are inherited from the base class
      # and adding them here causes duplicate mappings.
      next if element.is_a?(Lutaml::Xml::Schema::Xsd::Sequence) || element.is_a?(Lutaml::Xml::Schema::Xsd::Choice) || element.is_a?(Lutaml::Xml::Schema::Xsd::Group)

      instance << case element
                  when Lutaml::Xml::Schema::Xsd::Attribute
                    setup_attribute(element)
                  when Lutaml::Xml::Schema::Xsd::AttributeGroup
                    setup_attribute_groups(element)
                  when Lutaml::Xml::Schema::Xsd::Sequence
                    setup_sequence(element)
                  when Lutaml::Xml::Schema::Xsd::Choice
                    setup_choice(element)
                  when Lutaml::Xml::Schema::Xsd::Group
                    setup_group_type(element)
                  end
    end
  end
end

#setup_complex_type(complex_type) ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 290

def setup_complex_type(complex_type)
  ComplexType.new.tap do |instance|
    instance.id = complex_type.id
    instance.name = complex_type.name
    instance.mixed = complex_type.mixed
    resolved_element_order(complex_type).each do |element|
      case element
      when Lutaml::Xml::Schema::Xsd::Attribute
        instance << setup_attribute(element)
      when Lutaml::Xml::Schema::Xsd::Sequence
        instance << setup_sequence(element)
      when Lutaml::Xml::Schema::Xsd::Choice
        instance << setup_choice(element)
      when Lutaml::Xml::Schema::Xsd::ComplexContent
        instance << setup_complex_content(element, instance.name,
                                          instance)
      when Lutaml::Xml::Schema::Xsd::AttributeGroup
        instance << setup_attribute_groups(element)
      when Lutaml::Xml::Schema::Xsd::Group
        instance << setup_group_type(element)
      when Lutaml::Xml::Schema::Xsd::SimpleContent
        instance.simple_content = setup_simple_content(element)
      end
    end
  end
end

#setup_element(element) ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 419

def setup_element(element)
  element_name = element.name
  instance = Element.new(name: element_name, ref: element.ref)
  instance.min_occurs = element.min_occurs
  instance.max_occurs = element.max_occurs
  if element_name
    instance.type = setup_element_type(element, instance)
    instance.id = element.id
    instance.fixed = element.fixed
    instance.default = element.default
  end
  instance
end

#setup_element_type(element, _instance) ⇒ Object

Populates @simple_types or @complex_types based on elements available value.



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 434

def setup_element_type(element, _instance)
  return element.type if element.type

  type, prefix = if element.simple_type
                   ["simple",
                    "ST"]
                 else
                   ["complex", "CT"]
                 end
  type_instance = element.public_send(:"#{type}_type")
  type_instance.name = [prefix, element.name].join("_")
  instance_variable_get(:"@#{type}_types")[type_instance.name] =
    public_send(:"setup_#{type}_type", type_instance)
  type_instance.name
end

#setup_extension(extension, instance) ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 506

def setup_extension(extension, instance)
  instance.base_class = extension.base
  resolved_element_order(extension).each do |element|
    instance << case element
                when Lutaml::Xml::Schema::Xsd::Attribute
                  setup_attribute(element)
                when Lutaml::Xml::Schema::Xsd::AttributeGroup
                  setup_attribute_groups(element)
                when Lutaml::Xml::Schema::Xsd::Sequence
                  setup_sequence(element)
                when Lutaml::Xml::Schema::Xsd::Choice
                  setup_choice(element)
                when Lutaml::Xml::Schema::Xsd::Group
                  setup_group_type(element)
                end
  end
end

#setup_group_type(group, root_call: false) ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 349

def setup_group_type(group, root_call: false)
  object = Group.new(group.name, group.ref)
  object.instance = setup_group_type_instance(group)
  @group_types[group.name] = object if group.name && !root_call
  object
end

#setup_group_type_instance(group) ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 356

def setup_group_type_instance(group)
  if sequence = group.sequence
    setup_sequence(sequence)
  elsif choice = group.choice
    setup_choice(choice)
  end
end

#setup_restriction(restriction) ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 450

def setup_restriction(restriction)
  Restriction.new.tap do |instance|
    instance.base_class = restriction.base
    restriction_patterns(restriction.pattern,
                         instance)
    restriction_content(instance, restriction)
    if restriction.enumeration&.any?
      instance.enumerations = restriction.enumeration.map(&:value)
    end
  end
end

#setup_sequence(sequence) ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 329

def setup_sequence(sequence)
  Sequence.new.tap do |instance|
    resolved_element_order(sequence).each do |object|
      # No implementation yet for Lutaml::Xml::Schema::Xsd::Any!
      next if object.is_a?(Lutaml::Xml::Schema::Xsd::Any)

      instance << case object
                  when Lutaml::Xml::Schema::Xsd::Sequence
                    setup_sequence(object)
                  when Lutaml::Xml::Schema::Xsd::Element
                    setup_element(object)
                  when Lutaml::Xml::Schema::Xsd::Choice
                    setup_choice(object)
                  when Lutaml::Xml::Schema::Xsd::Group
                    setup_group_type(object)
                  end
    end
  end
end

#setup_simple_content(simple_content) ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 317

def setup_simple_content(simple_content)
  SimpleContent.new.tap do |instance|
    if simple_content.extension
      instance.base_class = simple_content.extension.base
      setup_extension(simple_content.extension, instance)
    elsif simple_content.restriction
      instance.base_class = simple_content.restriction.base
      instance << setup_restriction(simple_content.restriction)
    end
  end
end

#setup_simple_type(simple_type) ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 242

def setup_simple_type(simple_type)
  SimpleType.new(simple_type.name).tap do |type_object|
    if union = simple_type.union
      type_object.unions = union.member_types.split
    elsif restriction = simple_type.restriction
      type_object.base_class = restriction.base&.split(":")&.last
      type_object.instance = setup_restriction(restriction)
    end
  end
end

#to_models(schema, options = {}) ⇒ Object 



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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 62

def to_models(schema, options = {})
  as_models(schema, options: options)
  options[:indent] = options[:indent] ? options[:indent].to_i : 2

  # Auto-generate module namespace from output directory if not explicitly set
  unless options.key?(:module_namespace)
    output_dir = options.fetch(:output_dir,
                               "lutaml_models_#{Time.now.to_i}")
    # Generate a namespace from the directory name (e.g., "my_models" -> "MyModels")
    dir_name = File.basename(output_dir).split("_").map(&:capitalize).join
    options[:module_namespace] = dir_name
  end

  # Allow explicit nil to disable namespace
  # only set default register_id if module_namespace is present
  if options[:module_namespace]
    options[:register_id] ||= :default
  end

  @simple_types.merge!(XmlCompiler::SimpleType.setup_supported_types)

  # Generate namespace classes
  namespace_classes_hash = {}
  @namespace_classes.each do |name, ns_class|
    namespace_classes_hash[name] = ns_class.to_class(options: options)
  end

  classes_list = namespace_classes_hash.merge(@simple_types).merge(@complex_types).merge(@group_types)
  classes_list = classes_list.transform_values do |type|
    # Skip namespace classes (already strings) and only process model types
    next type if type.is_a?(String)

    type.to_class(options: options.merge(
      module_namespace: options[:module_namespace],
      register_id: options[:register_id],
    ))
  end
  if options[:create_files]
    dir = options.fetch(:output_dir, "lutaml_models_#{Time.now.to_i}")

    # If module_namespace provided, create subdirectories
    if options[:module_namespace]
      module_path = options[:module_namespace].split("::").map(&:downcase).join("/")
      full_dir = File.join(dir, module_path)
      FileUtils.mkdir_p(full_dir)

      # Generate central registry file with autoload
      registry_content = RegistryGenerator.generate(classes_list,
                                                    options)
      if registry_content
        # Registry file goes in parent directory of module path
        registry_name = module_path.split("/").last
        registry_file = File.join(dir, "#{registry_name}_registry.rb")
        File.write(registry_file, registry_content)
      end

      # Write class files
      classes_list.each do |name, klass|
        create_file(name, klass, full_dir)
      end
    else
      # When no module_namespace, write files directly to output dir
      # Generated files use require_relative for dependencies (traditional approach)
      FileUtils.mkdir_p(dir)

      # Write class files
      classes_list.each do |name, klass|
        create_file(name, klass, dir)
      end
    end
    true
  else
    require_classes(classes_list) if options[:load_classes]
    classes_list
  end
end

#xml_defined_attribute?(schema, item_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lutaml/model/schema/xml_compiler.rb', line 575

def xml_defined_attribute?(schema, item_name)
  schema.target_namespace == XML_NAMESPACE_URI &&
    XML_DEFINED_ATTRIBUTES.key?(item_name)
end