Class: Lutaml::Model::Attribute

Inherits:
Object
  • Object
show all
Includes:
CollectionHandler, DeepDupable, RestrictionValidation
Defined in:
lib/lutaml/model/attribute.rb

Constant Summary collapse

TO_FORMAT_METHODS =

Symbol interpolation (:"to_#format") allocates a String and a Symbol per call on the serialization hot path; the table serves the known formats and the fallback keeps exotic ones working.

{
  xml: :to_xml,
  json: :to_json,
  yaml: :to_yaml,
  toml: :to_toml,
  hash: :to_hash,
}.freeze
ALLOWED_OPTIONS = 
%i[
  raw
  default
  delegate
  collection
  values
  pattern
  transform
  choice
  sequence
  method
  method_name
  polymorphic
  polymorphic_class
  initialize_empty
  validations
  required
  ref_model_class
  ref_key_attribute
  xsd_type
  union_member_types
  min
  max
  signed
  min_length
  max_length
].freeze
TypeProbeCache =

Per-type-class memo of the custom from_xml/from_json probe used by #cast. Isolated cache holder: enclosing-class freezes (some suites freeze Lutaml::Model::Attribute) would freeze a constant Hash with it.

::Class.new do
  class << self
    def cache
      @cache ||= {}
    end
  end
end
MODEL_STRINGS = 
[
  Lutaml::Model::Type::String,
  "String",
  :string,
].freeze
CHILD_PROPAGATION_KEYS =

Delegate propagation to DeserializationContext for single source of truth.

Serialize::DeserializationContext::PROPAGATION_KEYS
WARN_ON_OVERRIDE =

Methods where accidental override is likely to cause issues All names are allowed - this list only controls which ones get a warning Format-specific serialization methods (to_xml, to_json, etc.) are pushed by each format plugin at load time via format_specific_warn_names.

%i[
  # Ruby core - overriding breaks fundamental behavior
  hash object_id class send method

  # Object lifecycle - overriding without super breaks things
  initialize

  # Serialization methods - overriding breaks serialization
  to_format

  # Internal helpers - overriding breaks internal logic
  attr_value attribute_exist? key_exist? key_value
  using_default? using_default_for value_set_for
  method_missing respond_to_missing?
].freeze
EMPTY_TRANSFORM_HASH =

Performance: Frozen empty hash to reduce allocations

{}.freeze
EMPTY_VALUES_ARRAY =

Performance: Frozen empty array to reduce allocations

[].freeze

Constants included from CollectionHandler

CollectionHandler::KEYWORD_PARAM_KINDS

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from RestrictionValidation

#effective_restriction_facets, #validate_restriction_configuration!, #validate_restriction_values!

Methods included from CollectionHandler

#build_collection, #coerce_to_collection?, #collection, #collection?, #collection_class, #collection_instance?, #custom_collection?, #initialize_accepts_register?, #min_collection_zero?, #resolved_collection, #singular?

Constructor Details

#initialize(name, type, options = {}) ⇒ Attribute

Returns a new instance of Attribute.



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

def initialize(name, type, options = {})
  skip_validation = options.fetch(:skip_validation, false)

  unless skip_validation
    validate_name!(
      name, reserved_methods: Lutaml::Model::Serializable.instance_methods
    )
  end

  @name = name
  @options = options.except(:skip_validation)

  validate_presence!(type) unless skip_validation
  @type = type
  @unresolved_type = type
  process_options! unless skip_validation
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/lutaml/model/attribute.rb', line 6

def name
  @name
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/lutaml/model/attribute.rb', line 6

def options
  @options
end

#validations ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 381

def validations
  @options[:validations]
end

Class Method Details

.cast_from_string!(type) ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 133

def self.cast_from_string!(type)
  Type.const_get(type)
rescue NameError
  raise ArgumentError, "Unknown Lutaml::Model::Type: #{type}"
end

.cast_from_symbol!(type) ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 127

def self.cast_from_symbol!(type)
  Type.lookup(type)
rescue UnknownTypeError
  raise ArgumentError, "Unknown Lutaml::Model::Type: #{type}"
end

.cast_type!(type) ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 117

def self.cast_type!(type)
  case type
  when Symbol then cast_from_symbol!(type)
  when String then cast_from_string!(type)
  when Class then type
  else
    raise ArgumentError, "Unknown Lutaml::Model::Type: #{type}"
  end
end

.custom_from_probe?(type) ⇒ Boolean

Public reader for compiled rule plans: does this type class carry a custom from_xml/from_json (answer static, probed once)?

Returns:

  • (Boolean) 


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# File 'lib/lutaml/model/attribute.rb', line 65

def custom_from_probe?(type)
  cache = TypeProbeCache.cache
  return cache[type] if cache.key?(type)

  base = Lutaml::Model::Type::Value.singleton_class
  cache[type] =
    type.method(:from_xml).owner != base ||
    type.method(:from_json).owner != base
end

.default_evaluation? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lutaml/model/attribute.rb', line 632

def self.default_evaluation?
  Thread.current[:__lutaml_evaluating_default] == true
end

.evaluating_default ⇒ Object

Marks the dynamic extent in which a default proc runs against a model instance, so Serialize#method_missing can fall back to the model class for methods the instance does not define (0.7.x compatibility, lutaml-model#745).



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# File 'lib/lutaml/model/attribute.rb', line 624

def self.evaluating_default
  previous = Thread.current[:__lutaml_evaluating_default]
  Thread.current[:__lutaml_evaluating_default] = true
  yield
ensure
  Thread.current[:__lutaml_evaluating_default] = previous
end

.format_specific_warn_names ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 109

def self.format_specific_warn_names
  @format_specific_warn_names
end

.warn_on_override_names ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 113

def self.warn_on_override_names
  WARN_ON_OVERRIDE + @format_specific_warn_names
end

Instance Method Details

#_default_kind ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 612

def _default_kind
  return :delegate if delegate
  return :proc if options[:default].is_a?(Proc)
  return :static if options.key?(:default)

  :none
end

#apply_value_map(value, value_map) ⇒ Object

Apply a value map to transform a value.

value_map keys (:nil, :empty, :omitted) each map either to a symbolic option (:nil, :empty, :omitted) or, for Boolean attributes, directly to true/false. The nested form value_map[key] = true/false is accepted unconditionally; the bare form value_map = true/false is gated on the attribute being a Boolean type.



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

def apply_value_map(value, value_map)
  key = if value.nil? then :nil
        elsif Utils.empty?(value) then :empty
        elsif Utils.uninitialized?(value) then :omitted
        end
  return value unless key

  nested = value_map.dig(:from, key)
  return nested if nested.is_a?(TrueClass) || nested.is_a?(FalseClass)

  option = value_map[key]
  if (option.is_a?(TrueClass) || option.is_a?(FalseClass)) &&
      value_map_boolean?
    return option
  end

  case option
  when :nil
    nil
  when :empty
    if key == :empty then value
    elsif collection? then build_collection
    else ""
    end
  else
    Lutaml::Model::UninitializedClass.instance
  end
end

#cast(value, format, register, options = {}) ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 880

def cast(value, format, register, options = {})
  # Sentinel: never a cast input. nil flows on — absent values
  # reach the type's cast (ST_OnOff booleans, #795); a cast that
  # manufactures a typed instance from nothing is the phantom
  # #793 removed, suppressed here as in cast_element.
  return value if Utils.uninitialized?(value)

  if value.nil?
    result = cast_present(value, format, register, options)
    return result if result.nil?
    return nil if result.is_a?(Lutaml::Model::Type::Value) ||
      result.is_a?(Lutaml::Model::Serialize)

    return result
  end

  cast_present(value, format, register, options)
end

#cast_derived(value, register) ⇒ Object

Cast the value a derived reader just recomputed.

A derived attribute has no ivar and no writer. Its reader runs the source method and casts the result on every call, which makes the reader a casting entry point of its own — nothing a writer-side guard can reach. A collection still has to come back as a collection here, even when the source method returned nothing.

Parameters:

  • value (Object) —

    whatever the source method returned

  • register (Symbol) —

    register for type resolution

Returns:

  • (Object) —

    the cast value, or an empty collection



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# File 'lib/lutaml/model/attribute.rb', line 428

def cast_derived(value, register)
  return cast_element(value, register) unless collection?
  return build_collection if no_data?(value)
  return cast_value(value, register) if collection_instance?(value)
  # A plain Array is a list of source elements even when the attribute
  # declares its own collection class, which collection_instance? only
  # recognises by that class. Without this it becomes one element whose
  # value is the inspected Array.
  if value.is_a?(::Array)
    return build_collection(value.map { |v| cast_element(v, register) })
  end

  build_collection(cast_element(value, register))
end

#cast_element(value, register) ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 499

def cast_element(value, register)
  # Resolve first: an undeclared type has to raise UnknownTypeError
  # even for a nil value (the 0.8.33 behavior).
  resolved_type = type(register)

  return value if Utils.uninitialized?(value)

  # nil reaches the type's cast — the long-shipped contract
  # ST_OnOff-style types depend on (absent attribute -> cast(nil)
  # -> false; lutaml-model#795). What nil must NOT do is
  # manufacture a typed INSTANCE from nothing: that is the
  # phantom #793 removed, suppressed by the post-check below.
  if value.nil?
    result = cast_element_present(value, register, resolved_type)
    return result if result.nil?
    return nil if result.is_a?(Lutaml::Model::Type::Value) ||
      result.is_a?(Lutaml::Model::Serialize)

    return result
  end

  cast_element_present(value, register, resolved_type)
end

#cast_element_present(value, register, resolved_type = nil) ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 523

def cast_element_present(value, register, resolved_type = nil)
  resolved_type ||= type(register)

  return cast_union(value, nil, register) if union?
  return resolved_type.new(value) if value.is_a?(::Hash) && !hash_type?

  # Special handling for Reference types - pass the metadata
  # (the comparison is attribute-constant; memoize the verdict)
  if reference_type?
    return resolved_type.cast_with_metadata(value,
                                            @options[:ref_model_class], @options[:ref_key_attribute])
  end

  # The castability verdict is a class-hierarchy fact, immutable
  # per resolved type — check once, not per value (TODO.max-perf/15).
  checked = (@castable_types ||= {}.compare_by_identity)
  unless checked[resolved_type]
    validate_attr_type!(resolved_type)
    checked[resolved_type] = true
  end

  resolved_type.cast(value)
end

#cast_items(value, register) ⇒ Object

Prepare the seed items for a collection. Custom Collection classes cast their own items (idempotently) in #initialize, so hand them a plain array of the existing elements — rebuilding a fresh collection avoids sharing a mutable default across instances. Plain collections cast each element here.



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# File 'lib/lutaml/model/attribute.rb', line 411

def cast_items(value, register)
  return value.to_a if custom_collection?

  value.map { |v| cast_element(v, register) }
end

#cast_present(value, format, register, options = {}) ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 899

def cast_present(value, format, register, options = {})
  # Namespace-aware type resolution: use type_with_namespace if namespace_uri provided
  namespace_uri = options[:namespace_uri]
  resolved_type = if options[:resolved_type]
                    options[:resolved_type]
                  elsif register && namespace_uri
                    type_with_namespace(register, namespace_uri)
                  else
                    type(register)
                  end
  if (collection_instance?(value) || value.is_a?(Array)) &&
      !value_policy.whole_value?(resolved_type)
    merged_opts = options.merge(resolved_type: resolved_type,
                                converted: true)
    return build_collection(value.map do |v|
      cast(v, format, register, merged_opts)
    end, register: register)
  end

  return value if already_serialized?(resolved_type, value)

  return cast_union(value, format, register) if union?

  # Special handling for Reference types - pass the metadata
  # Check @options[:ref_model_class] which is set when type is { ref: [...] }
  if @options[:ref_model_class] && resolved_type == Lutaml::Model::Type::Reference
    return resolved_type.cast_with_metadata(value,
                                            @options[:ref_model_class], @options[:ref_key_attribute])
  end

  # Fast path for Type::Value subclasses (String, Integer, Boolean, etc.)
  # These are never Serializable, so skip expensive can_serialize? and needs_conversion? checks
  # Skip if type has custom from_xml/from_json methods (defined on the class itself, not inherited).
  # The probe allocated two Method objects per cast call; the answer is
  # static per type class, so it is resolved once.
  if resolved_type.is_a?(Class) && resolved_type < Lutaml::Model::Type::Value && !self.class.custom_from_probe?(resolved_type)
    return resolved_type.cast(value)
  end

  klass = resolve_polymorphic_class(resolved_type, value, options)
  if can_serialize?(klass, value, format, options)
    propagated = Serialize::DeserializationContext.propagate(options)
    klass.apply_mappings(value, format,
                         propagated.merge(register: register))
  elsif needs_conversion?(klass, value)
    klass.public_send(:"from_#{format}", value)
  else
    # No need to use register#get_class,
    # can_serialize? method already checks if type is Serializable or not.
    Type.lookup(klass).cast(value)
  end
end

#cast_type!(type) ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 385

def cast_type!(type)
  self.class.cast_type!(type)
end

#cast_value(value, register) ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 389

def cast_value(value, register)
  if list_like?(value)
    build_collection(cast_items(value, register), register: register)
  elsif coerce_to_collection?(value)
    build_collection(cast_items([value], register), register: register)
  else
    cast_element(value, register)
  end
end

#choice ⇒ Object

min_collection_zero? is provided by CollectionHandler module



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# File 'lib/lutaml/model/attribute.rb', line 993

def choice
  @options[:choice]
end

#clear_type_cache ⇒ Object

Clear type resolution caches for this attribute. Called by GlobalContext.clear_caches to ensure stale entries from GC'd TypeContext objects don't persist.



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# File 'lib/lutaml/model/attribute.rb', line 1111

def clear_type_cache
  @type_cache&.clear
  @cached_type_default = nil
  @default_type_context = nil
  @type_cache_by_register&.clear
  @type_cache_generation = nil
end

#copy_internal_state_from(source) ⇒ Object

Copy internal state from another Attribute instance. Used by dup to transfer processed state without calling private writers.



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# File 'lib/lutaml/model/attribute.rb', line 1103

def copy_internal_state_from(source)
  @raw = source.raw?
  @validations = source.validations
end

#deep_dup ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 1018

def deep_dup
  # Don't deep_dup the entire options hash because:
  # 1. Lambdas/Procs (like :default) should not be duplicated
  # 2. Classes (like :collection class) are immutable
  # 3. Deep dupping creates circular references when lambdas close over the attribute

  # Selectively copy options using direct type checks to avoid method calls
  duped_options = { skip_validation: true }
  options.each do |key, value|
    duped_options[key] = case value
                         when Symbol, TrueClass, FalseClass, Numeric, Class, Module, Proc, Method, NilClass
                           value # Immutable, don't dup
                         when Range
                           # Only dup if bounds are mutable strings
                           if value.begin.is_a?(String) || (value.end && value.end.is_a?(String))
                             Range.new(value.begin.dup, value.end&.dup, value.exclude_end?)
                           else
                             value # Immutable bounds, safe to reuse
                           end
                         when Hash
                           Utils.deep_dup(value)
                         when Array
                           Utils.deep_dup(value)
                         else
                           value # Keep as-is (might be a complex object)
                         end
  end

  # Skip validation during deep_dup - options are already validated in original
  # This prevents infinite recursion when process_options! tries to access collection
  self.class.new(name, unresolved_type, duped_options).tap do |dup_attr|
    dup_attr.copy_internal_state_from(self)
  end
end

#default(register = Lutaml::Model::Config.default_register, instance_object = nil) ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 565

def default(register = Lutaml::Model::Config.default_register,
instance_object = nil)
  if instance_object.nil?
    @default_cache ||= {}
    cached = @default_cache[register]
    return cached if cached

    result = cast_value(default_value(register, nil), register)
    if immutable_value?(result)
      @default_cache[register] = result
    end
    result
  else
    cast_value(default_value(register, instance_object), register)
  end
end

#default_set?(register, instance_object = nil) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lutaml/model/attribute.rb', line 636

def default_set?(register, instance_object = nil)
  !Utils.uninitialized?(default_value(register, instance_object))
end

#default_type_context ⇒ Object

Performance: Cache default type context lookup



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# File 'lib/lutaml/model/attribute.rb', line 318

def default_type_context
  @default_type_context ||= begin
    default_id = Lutaml::Model::Config.default_register
    ctx = GlobalContext.context(default_id)
    ctx || GlobalContext.default_context
  end
end

#default_value(register, instance_object = nil) ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 589

def default_value(register, instance_object = nil)
  # The kind is fixed at definition; the common case (no default
  # at all) paid three option checks per absent attribute per
  # instantiation before the memo.
  case (@default_kind ||= _default_kind)
  when :none
    Lutaml::Model::UninitializedClass.instance
  when :static
    options[:default]
  when :proc
    if instance_object
      ::Lutaml::Model::Attribute.evaluating_default do
        instance_object.instance_exec(&options[:default])
      end
    else
      options[:default].call
    end
  else # :delegate
    type(register).attributes(register)[to].default(register,
                                                    instance_object)
  end
end

#delegate ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 359

def delegate
  @options[:delegate]
end

#derived? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lutaml/model/attribute.rb', line 355

def derived?
  !method_name.nil?
end

#enum? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lutaml/model/attribute.rb', line 561

def enum?
  !enum_values.empty?
end

#enum_values ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 647

def enum_values
  @options.key?(:values) ? @options[:values] : EMPTY_VALUES_ARRAY
end

#execute_validations!(value) ⇒ Object

execute custom validations on the attribute value i.e presence: true, numericality: true, etc

Raises:



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# File 'lib/lutaml/model/attribute.rb', line 741

def execute_validations!(value)
  return true if Utils.blank?(value)

  memoization_container = {}
  errors = Lutaml::Model::Validator.call(value, validations,
                                         memoization_container)

  return if errors.empty?

  raise Lutaml::Model::ValidationFailedError.new(errors)
end

#extract_register(_context_or_register) ⇒ Object

Extract the Register from the context_or_register argument



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# File 'lib/lutaml/model/attribute.rb', line 289

def extract_register(_context_or_register)
  # Register backward compatibility - now always returns nil
  # Type resolution uses GlobalContext directly
  nil
end

#hash_type? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lutaml/model/attribute.rb', line 547

def hash_type?
  type == Lutaml::Model::Type::Hash
end

#immutable_value?(value) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lutaml/model/attribute.rb', line 582

def immutable_value?(value)
  value.nil? || value.is_a?(Numeric) || value.is_a?(String) ||
    value.is_a?(Symbol) || value == true || value == false ||
    value.equal?(::Lutaml::Model::UninitializedClass.instance) ||
    value.frozen?
end

#initialize_empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lutaml/model/attribute.rb', line 377

def initialize_empty?
  @options[:initialize_empty]
end

#list_like?(value) ⇒ Boolean

Plain Arrays count as list input. On singular attributes collection_instance? matches Arrays too (their collection class is Array), preserving the Array so strict cardinality can flag it.

Returns:

  • (Boolean) 


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

def list_like?(value)
  collection_instance?(value) || (collection? && value.is_a?(::Array))
end

#loaded_type(context_or_register = nil) ⇒ Object

Resolution that never materializes deferred model classes: raises UnknownTypeError for a not-yet-loaded class name. Mapping-time validation uses this so finalizing one mapping cannot fire an autoload that re-enters another model file mid-definition.



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# File 'lib/lutaml/model/attribute.rb', line 180

def loaded_type(context_or_register = nil)
  return if unresolved_type.nil?

  context = normalize_context(context_or_register)
  resolver.resolve(unresolved_type, context, materialize: false)
end

#method_name ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 373

def method_name
  @options[:method_name]
end

#model_instance?(value) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lutaml/model/attribute.rb', line 874

def model_instance?(value)
  return false unless @options[:ref_model_class]

  value.class.name == @options[:ref_model_class]
end

#no_data?(value) ⇒ Boolean

True when the value is "nothing arrived" rather than data.

nil and the uninitialized sentinel both mean the source carried no value. Neither is something a type can be asked to turn into an instance.

Parameters:

  • value (Object)

Returns:

  • (Boolean) 


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# File 'lib/lutaml/model/attribute.rb', line 495

def no_data?(value)
  value.nil? || Utils.uninitialized?(value)
end

#normalize_context(context_or_register) ⇒ Object

Normalize register/context to TypeContext for resolution Performance: Optimized to reduce allocations in hot path



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# File 'lib/lutaml/model/attribute.rb', line 297

def normalize_context(context_or_register)
  # Fast path for nil - most common case
  return default_type_context if context_or_register.nil?

  # Fast path for TypeContext - no conversion needed
  return context_or_register if context_or_register.is_a?(Lutaml::Model::TypeContext)

  # Handle Register and Symbol cases
  context_id = case context_or_register
               when Lutaml::Model::Register
                 context_or_register.id
               when Symbol
                 context_or_register
               else
                 return GlobalContext.default_context
               end

  GlobalContext.context(context_id) || GlobalContext.default_context
end

#pattern ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 640

def pattern
  options[:pattern]
end

#polymorphic? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lutaml/model/attribute.rb', line 340

def polymorphic?
  @options[:polymorphic_class]
end

#process_options! ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 997

def process_options!
  validate_options!(@options)
  if union?
    @options[:union_member_types] =
      Lutaml::Model::Type::Union.validate_members!(@options[:union_member_types])
    Lutaml::Model::Type::Union.validate_combo!(@options)
  end
  # `restrict` merges new options into the SAME attribute object
  # post-construction — the option-derived memos must reset here or
  # collection?/transform keep answering from the pre-restrict state.
  remove_instance_variable(:@collection_option) if defined?(@collection_option)
  remove_instance_variable(:@transform) if defined?(@transform)
  @raw = !!@options[:raw]
  if @raw
    warn "[DEPRECATED] attribute :#{name}, :string, raw: true is deprecated. " \
         "Use map_element \"name\", to: :#{name}, raw: :content instead."
  end
  @validations = @options[:validations]
  set_default_for_collection if collection?
end

#raw? ⇒ Boolean

Collection methods are provided by CollectionHandler module

Returns:

  • (Boolean) 


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# File 'lib/lutaml/model/attribute.rb', line 557

def raw?
  @raw
end

#reference_key(value) ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 865

def reference_key(value)
  return nil unless value
  return value.map { |item| reference_key(item) } if value.is_a?(Array)

  return value.public_send(@options[:ref_key_attribute]) if model_instance?(value)

  value
end

#reference_type? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lutaml/model/attribute.rb', line 330

def reference_type?
  (@reference_type ||= unresolved_type == Lutaml::Model::Type::Reference)
end

#required_value_set?(value) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lutaml/model/attribute.rb', line 479

def required_value_set?(value)
  return true unless options[:required]
  return false if value.nil?
  return false if Utils.empty?(value)

  true
end

#resolver ⇒ Object

Cache the resolver reference — GlobalContext.resolver is a singleton that never changes during the process lifetime. Avoids repeated singleton access overhead on every type() call.



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# File 'lib/lutaml/model/attribute.rb', line 160

def resolver
  @resolver ||= GlobalContext.resolver
end

#sequenced_appearance_count(element_order, mapped_name, current_index) ⇒ Object

resolved_collection is provided by CollectionHandler module

Raises:



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# File 'lib/lutaml/model/attribute.rb', line 970

def sequenced_appearance_count(element_order, mapped_name, current_index)
  elements = element_order[current_index..]
  element_count = elements.take_while do |element|
    element == mapped_name
  end.count
  return element_count if element_count.between?(*resolved_collection.minmax)

  raise Lutaml::Model::ElementCountOutOfRangeError.new(
    mapped_name,
    element_count,
    collection,
  )
end

#serializable?(register) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lutaml/model/attribute.rb', line 952

def serializable?(register)
  type(register) <= Serialize
end

#serializable_type?(register = nil) ⇒ Boolean

Cached version of serializable? check for hot deserialization path Called millions of times in resolve_rule_names_with_type and value_for_rule

Returns:

  • (Boolean) 


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# File 'lib/lutaml/model/attribute.rb', line 958

def serializable_type?(register = nil)
  register_key = register || :default
  return @serializable_type_cache[register_key] if defined?(@serializable_type_cache) && @serializable_type_cache&.key?(register_key)

  resolved_type = type(register_key)
  result = resolved_type.is_a?(Class) && resolved_type.include?(Serialize)
  @serializable_type_cache ||= {}
  @serializable_type_cache[register_key] = result
end

#serialize(value, format, register, options = {}) ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 847

def serialize(value, format, register, options = {})
  value ||= build_collection if collection? && initialize_empty?
  return value if value.nil? || Utils.uninitialized?(value)

  resolved_type = options[:resolved_type] || type(register)
  value = reference_key(value) if unresolved_type == Lutaml::Model::Type::Reference
  if collection_instance?(value)
    return serialize_array(value, format, register,
                           options.merge(resolved_type: resolved_type))
  end
  if resolved_type <= Serialize
    return serialize_model(value, format, register,
                           options)
  end

  serialize_value(value, format, resolved_type)
end

#setter ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 551

def setter
  :"#{@name}="
end

#transform ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 366

def transform
  # Options are fixed after definition (value_policy memoizes the
  # same way) — the per-call @options[:transform] Hash#[] was hit
  # 2.9 M times on the ISO-13849 parse profile.
  @transform ||= @options[:transform] || EMPTY_TRANSFORM_HASH
end

#transform_export_method ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 655

def transform_export_method
  transform[:export]
end

#transform_import_method ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 651

def transform_import_method
  transform[:import]
end

#type(context_or_register = nil) ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 187

def type(context_or_register = nil)
  return if unresolved_type.nil?

  # Performance: Fast path for nil or default register (most common case during deserialization)
  if context_or_register.nil? || context_or_register == :default
    return @cached_type_default ||= begin
      context = normalize_context(context_or_register)
      resolver.resolve(unresolved_type, context)
    end
  end

  # Register/Symbol path: the resolution is a static fact of
  # (attribute, register id), but the old code walked
  # GlobalContext.context — a singleton hop, a delegation, a to_sym
  # normalization and a registry lookup — on every call (2.4 M calls,
  # 3.9 M GlobalContext#context hits per ISO-13849 parse). Cache keyed
  # on the register id itself; a context replaced under the same id
  # bumps GlobalContext.context_generation and flushes the cache.
  register_id = case context_or_register
                when Symbol
                  context_or_register
                when Lutaml::Model::Register
                  context_or_register.id
                end

  if register_id
    cache = (@type_cache_by_register ||= {})
    generation = GlobalContext.context_generation
    if @type_cache_generation != generation
      cache.clear
      @type_cache_generation = generation
    end
    cached = cache[register_id]
    return cached if cached

    context = GlobalContext.context(register_id)
    # An unregistered id falls back to the (thread-local) default
    # context — do not pin that answer in the shared cache.
    return resolver.resolve(unresolved_type, context || GlobalContext.default_context) unless context

    resolved = resolver.resolve(unresolved_type, context)
    cache[register_id] = resolved
    resolved
  elsif context_or_register.is_a?(Lutaml::Model::TypeContext)
    # Performance: Cache per TypeContext identity.
    # When type substitution replaces a TypeContext, the object_id changes,
    # so old cache entries are never hit again (safe invalidation).
    cache_key = context_or_register.object_id
    @type_cache ||= {}
    cached = @type_cache[cache_key]
    return cached if cached

    resolved = resolver.resolve(unresolved_type, context_or_register)
    @type_cache[cache_key] = resolved
    resolved
  else
    @cached_type_default ||= begin
      context = normalize_context(context_or_register)
      resolver.resolve(unresolved_type, context)
    end
  end
end

#type_namespace_class(register = nil) ⇒ Class?

Get namespace class from Type::Value or Model class

Parameters:

  • register (Symbol, nil) (defaults to: nil) —

    register ID for type resolution

Returns:

  • (Class, nil) —

    XmlNamespace class if type has namespace



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# File 'lib/lutaml/model/attribute.rb', line 1058

def type_namespace_class(register = nil)
  register_key = register || :default
  return @type_ns_class_cache[register_key] if defined?(@type_ns_class_cache) && @type_ns_class_cache&.key?(register_key)

  # Resolve type namespace via type() which uses GlobalContext.resolver
  resolved_type = type(register_key)
  result = nil

  # Check if type is a Type::Value class
  # Type namespaces are ONLY declared on Type::Value subclasses,
  # not on Serializable models. Serializable models have element
  # namespaces, which are handled separately.
  if resolved_type.is_a?(Class) && resolved_type <= Lutaml::Model::Type::Value
    result = resolved_type.namespace_class
  end

  @type_ns_class_cache ||= {}
  @type_ns_class_cache[register_key] = result
end

#type_namespace_prefix(register = nil) ⇒ String?

Get namespace prefix from type

Parameters:

  • register (Symbol, nil) (defaults to: nil) —

    register ID for type resolution

Returns:

  • (String, nil) —

    namespace prefix



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# File 'lib/lutaml/model/attribute.rb', line 1097

def type_namespace_prefix(register = nil)
  type_namespace_class(register)&.prefix_default
end

#type_namespace_uri(register = nil) ⇒ String?

Get namespace URI from type

Parameters:

  • register (Symbol, nil) (defaults to: nil) —

    register ID for type resolution

Returns:

  • (String, nil) —

    namespace URI



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# File 'lib/lutaml/model/attribute.rb', line 1083

def type_namespace_uri(register = nil)
  register_key = register || :default
  return @type_ns_uri_cache[register_key] if defined?(@type_ns_uri_cache) && @type_ns_uri_cache&.key?(register_key)

  result = type_namespace_class(register_key)&.uri
  @type_ns_uri_cache ||= {}
  @type_ns_uri_cache[register_key] = result
end

#type_with_namespace(register, namespace_uri = nil) ⇒ Class?

Get type with namespace-aware resolution.

Uses the register's resolve_in_namespace method for version-aware type resolution. Falls back to standard resolution if no namespace or register is provided.

Parameters:

  • register (Lutaml::Model::Register, Symbol, nil) —

    The register or register ID

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

    The namespace URI for version awareness

Returns:

  • (Class, nil) —

    The type class or nil



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# File 'lib/lutaml/model/attribute.rb', line 260

def type_with_namespace(register, namespace_uri = nil)
  return type(register) unless register && namespace_uri
  return if unresolved_type.nil?

  # Performance: Memoize type resolution per (register, namespace_uri) pair
  # This avoids repeated resolve_in_namespace calls for the same attribute
  @type_with_namespace_cache ||= {}
  cache_key = [register, namespace_uri]
  return @type_with_namespace_cache[cache_key] if @type_with_namespace_cache.key?(cache_key)

  # Resolve register from symbol if needed
  actual_register = if register.is_a?(Symbol)
                      Lutaml::Model::GlobalRegister.lookup(register)
                    else
                      register
                    end

  # If we don't have an actual Register object, fall back to standard resolution
  result = if actual_register.is_a?(Lutaml::Model::Register)
             actual_register.resolve_in_namespace(unresolved_type,
                                                  namespace_uri)
           end
  result ||= type(register)

  @type_with_namespace_cache[cache_key] = result
  result
end

#union? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lutaml/model/attribute.rb', line 344

def union?
  return @union unless @union.nil?

  @union = unresolved_type == Lutaml::Model::Type::Union
end

#union_member_types ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 350

def union_member_types
  @union_member_types ||=
    @options[:union_member_types].map { |member| cast_type!(member) }
end

#unresolved_type ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 326

def unresolved_type
  @unresolved_type || @type
end

#valid_collection!(value, caller) ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 801

def valid_collection!(value, caller)
  if collection_instance?(value) && !collection? &&
      !value_policy.whole_value?(unresolved_type)
    raise Lutaml::Model::CollectionTrueMissingError.new(name,
                                                        caller)
  end

  return true unless collection?

  # Allow any value for unbounded collections
  return true if collection == true

  unless collection_instance?(value)
    # An absent value satisfies a zero minimum and has nothing to size.
    return true if (value.nil? || Utils.uninitialized?(value)) &&
      resolved_collection.min.zero?

    raise Lutaml::Model::CollectionCountOutOfRangeError.new(
      name,
      value,
      collection,
    )
  end

  # cover? rather than between?, so an exclusive range such as (0...5)
  # rejects a count of 5.
  in_range = if resolved_collection.end.infinite?
               value.size >= resolved_collection.begin
             else
               resolved_collection.cover?(value.size)
             end

  unless in_range
    raise Lutaml::Model::CollectionCountOutOfRangeError.new(
      name,
      value,
      collection,
    )
  end

  # Truthy on success: validate_value! chains this with && before the
  # value/pattern/polymorphic/custom checks, so falling through as nil would
  # silently skip them for a valid bounded-range collection.
  true
end

#valid_pattern!(value, _resolved_type) ⇒ Object

Pattern binds actual string values only. For a plain :string attribute every element is a string; for a union the pattern applies to whichever elements took the :string branch (non-string members are exempt). A nil element is skipped along with every other non-string, and Array(value) flattens both plain Arrays and custom Collections so the pattern applies per element instead of to the collection as a whole.



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# File 'lib/lutaml/model/attribute.rb', line 693

def valid_pattern!(value, _resolved_type)
  return true unless pattern

  Array(value).each do |item|
    next unless item.is_a?(::String)
    next if pattern.match?(item)

    raise Lutaml::Model::PatternNotMatchedError.new(name, pattern, item)
  end

  true
end

#valid_value!(value) ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 659

def valid_value!(value)
  # nil is never tested against the value set, whether it arrives as the
  # whole value or as one element of a collection (this method recurses
  # per element). valid_pattern! skips nil the same way, and an unset
  # attribute is validate_required!'s business, not the enum's.
  return true if value.nil?
  return true unless enum?
  return true if Utils.uninitialized?(value)

  # Collection attributes hold multiple values; validate each element
  # against the allowed set rather than the coerced collection itself.
  if value.is_a?(::Array) || collection_instance?(value)
    return value.all? { |v| valid_value!(v) }
  end

  unless valid_value?(value)
    raise Lutaml::Model::InvalidValueError.new(name, value, enum_values)
  end

  true
end

#valid_value?(value) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lutaml/model/attribute.rb', line 681

def valid_value?(value)
  return true unless options[:values]

  options[:values].include?(value)
end

#validate_attr_type!(resolved_type) ⇒ Object

Public validation contract: mappings check their targets at finalize (lutaml-model#296), the cast path checks per value.

Raises:



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# File 'lib/lutaml/model/attribute.rb', line 1121

def validate_attr_type!(resolved_type)
  return true if resolved_type <= Serializable || resolved_type <= Type::Value
  return true if resolved_type.include?(Serialize)

  raise Lutaml::Model::InvalidAttributeTypeError.new(name,
                                                     resolved_type.name)
end

#validate_choice_content!(elements) ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 984

def validate_choice_content!(elements)
  return elements.count unless resolved_collection
  return 1 if elements.count.between?(*resolved_collection.minmax)

  elements.each_slice(resolved_collection.max).count
end

#validate_collection_range ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 770

def validate_collection_range
  range = @options[:collection]
  return if range == true
  return if custom_collection?

  unless range.is_a?(Range)
    raise ArgumentError, "Invalid collection range: #{range}"
  end

  validate_range!(range)
end

#validate_polymorphic(value, resolved_type) ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 753

def validate_polymorphic(value, resolved_type)
  if value.is_a?(Array)
    return value.all? do |v|
      validate_polymorphic!(v, resolved_type)
    end
  end
  return true unless options[:polymorphic]

  valid_polymorphic_type?(value, resolved_type)
end

#validate_polymorphic!(value, resolved_type) ⇒ Object

Raises:



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# File 'lib/lutaml/model/attribute.rb', line 764

def validate_polymorphic!(value, resolved_type)
  return true if validate_polymorphic(value, resolved_type)

  raise Lutaml::Model::PolymorphicError.new(value, options, resolved_type)
end

#validate_range!(range) ⇒ Object 



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# File 'lib/lutaml/model/attribute.rb', line 782

def validate_range!(range)
  if range.begin.nil?
    raise ArgumentError,
          "Invalid collection range: #{range}. Begin must be specified."
  end

  if range.begin.negative?
    raise ArgumentError,
          "Invalid collection range: #{range}. " \
          "Begin must be non-negative."
  end

  if range.end && range.end < range.begin
    raise ArgumentError,
          "Invalid collection range: #{range}. " \
          "End must be greater than or equal to begin."
  end
end

#validate_value!(value, register, instance_object: nil) ⇒ Object

Check if the value to be assigned is valid for the attribute

Currently there are 2 validations

  1. Value should be from the values list if they are defined e.g values: ["foo", "bar"] is set then any other value for this attribute will raise Lutaml::Model::InvalidValueError

  2. Value count should be between the collection range if defined e.g if collection: 0..5 is set then the value greater then 5 will raise Lutaml::Model::CollectionCountOutOfRangeError



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# File 'lib/lutaml/model/attribute.rb', line 716

def validate_value!(value, register, instance_object: nil)
  # Use the default value if the value is nil
  validate_required!(value)

  if value.nil?
    value = cast_value(default_value(register, instance_object),
                       register)
  end
  resolved_type = type(register)
  validate_restriction_configuration!(resolved_type)

  # Shape before contents. An over-count is a cardinality violation, not
  # an enum or pattern one, and checking it first keeps those predicates
  # from reporting on a value whose shape is already wrong.
  valid_collection!(value, instance_object&.class) &&
    valid_value!(value) &&
    valid_pattern!(value, resolved_type) &&
    validate_polymorphic!(value, resolved_type) &&
    execute_validations!(value)

  validate_restriction_values!(value, resolved_type)
end

#value_map_boolean? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lutaml/model/attribute.rb', line 334

def value_map_boolean?
  (@value_map_boolean ||=
     type == Lutaml::Model::Type::Boolean ||
     unresolved_type == Lutaml::Model::Type::Boolean)
end

#value_policy ⇒ Object

The value-shaping policy for this attribute. Constructed lazily so the collection/union/ref flags are settled; memoized because they are fixed after definition.



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# File 'lib/lutaml/model/attribute.rb', line 167

def value_policy
  @value_policy ||= ValuePolicy.new(
    collection: collection?,
    union: union?,
    reference: !@options[:ref_model_class].nil?,
  )
end