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# frozen_string_literal: true |
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require_relative '../../mixin/errors' |
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require_relative '../../mixin/reflection' |
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require_relative '../../path/segment' |
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module AMA |
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module Entity |
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class Mapper |
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module Handler |
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module Entity |
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# Default entity factory |
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class Factory |
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include Mixin::Errors |
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INSTANCE = new |
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# @param [AMA::Entity::Mapper::Type] type |
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# @param [Object] _data |
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# @param [AMA::Entity::Mapper::Context] context |
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def create(type, _data, context) |
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create_internal(type, context) |
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rescue StandardError => e |
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message = "Failed to instantiate #{type} directly from class" |
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if e.is_a?(ArgumentError) |
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message += '. Does it have parameterless #initialize() method?' |
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end |
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mapping_error(message, parent: e, context: context) |
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end |
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private |
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# @param [AMA::Entity::Mapper::Type] type |
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# @param [AMA::Entity::Mapper::Context] context |
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def create_internal(type, context) |
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entity = type.type.new |
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type.attributes.values.each do |attribute| |
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next if attribute.default.nil? || attribute.virtual |
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segment = Path::Segment.attribute(attribute.name) |
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ctx = context.advance(segment) |
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value = attribute.default |
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type.injector.inject(entity, type, attribute, value, ctx) |
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end |
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entity |
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end |
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class << self |
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include Mixin::Reflection |
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# @param [Factory] implementation |
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# @return [Factory] |
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def wrap(implementation) |
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handler = handler_factory(implementation, INSTANCE) |
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description = "Safety wrapper for #{implementation}" |
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wrapper = method_object(:create, to_s: description, &handler) |
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wrapper.singleton_class.instance_eval do |
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include Mixin::Errors |
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end |
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wrapper |
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end |
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private |
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# @param [Factory] implementation |
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# @param [Factory] fallback |
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# @return [Factory] |
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def handler_factory(implementation, fallback) |
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lambda do |type, data, ctx| |
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begin |
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implementation.create(type, data, ctx) do |t, d, c| |
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fallback.create(t, d, c) |
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end |
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rescue StandardError => e |
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raise_if_internal(e) |
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message = "Unexpected error from factory #{implementation}" |
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signature = '(type, data, context)' |
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options = { parent: e, context: ctx, signature: signature } |
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compliance_error(message, options) |
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end |
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end |
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end |
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end |
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end |
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end |
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end |
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end |
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end |
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end |
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ama-team /
ruby-entity-mapper
