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UPGRADING.md

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Unreleased

  • Use symfony/cache for FileSystem cache implementation instead of doctrine/cache
  • Deprecated the @ReadOnly annotation due to readonly becoming a keyword in PHP 8.1, use the @ReadOnlyProperty annotation instead
  • Doctrine type decimal is now correctly mapped to string instead of float

From 3.x to 3.30.0

Starting from this release doctrine/annotations is an optional package. If you still want to use them, please make sure that you require in composer.json file.

We strongly recommend to start using Attributes with PHP 8. You can easily migrate annotations to attributes with rector and Rector\Symfony\Set\SymfonySetList::ANNOTATIONS_TO_ATTRIBUTES rules.

From 2.x to 3.0.0

Upgrading from 2.x to 3.x should require almost no effort.

The only change is the revert of "deeper branch group exclusion strategy" introduced in 2.0.0 and now reverted as it was in 1.x. If you are not using this feature, then upgrading requires no changes at all.

The deprecations introduced in 2.x are still present in 3.0.0, said features are most likely to be removed in the next major version.

From 1.x to 3.0.0

Please follow the upgrade "From 1.13.0 to 2.0.0", skipping the section:

"deeper branch group exclusion strategy" has a different behaviour, the latest group is used instead of falling back to "Default"

The deprecations introduced in 2.x are still present in 3.0.0, said features are most likley to be removed in an next major.

From 1.13.0 to 2.0.0

If you are on version 1.x, it is suggested to migrate directly to 3.0.0 (since 2.x is not maintained anymore).

Main changes

  • The minimum PHP version is 7.2, type hints are used almost everywhere, most of the method signatures changed

  • JsonSerializationVisitor::getRoot and JsonSerializationVisitor::setRoot have been removed, their use is not necessary anymore

  • Removed AdvancedNamingStrategyInterface, the serialized name is now compiled and can not be changed at runtime

  • "deeper branch group exclusion strategy" has a different behaviour, the latest group is used instead of falling back to "Default"

  • Most of the classes are marked as final, inheritance is discouraged for all the cases, use composition instead

  • Most of the visitor configurations and options have been moved to visitor factories

  • Removed the abstract classes GenericSerializationVisitor and GenericDeserializationVisitor.

  • Removed deprecated method VisitorInterface::getNavigator, use Context::getNavigator instead

  • Removed deprecated method JsonSerializationVisitor::addData, use ::visitProperty(new StaticPropertyMetadata('', 'name', 'value'), 'value') instead

  • Removed Propel and PhpCollection support

  • Changed default date format from ISO8601 to RFC3339

  • Event listeners/handlers class names are case sensitive now

  • Removed AbstractVisitor::getNamingStrategy method

  • Removed Symfony 2.x support

  • Removed YAML serialization support

  • Removed PHP Driver metadata support

  • Removed in-object handler callbacks (@HandlerCallback annotation), use event listeners instead

  • Changed SerializerInterface::serialize signature

  • Changed ArrayTransformerInterface::toArray signature

  • Changed GraphNavigator::accept signature

  • Removed Serializer::setSerializationContextFactory and Serializer::setDeserializationContextFactory

  • Removed Serializer::getMetadataFactory

  • As default now JSON preserves trailing zeros when serializing a float

  • When using a discriminator map, parent class should either be declared abstract, or included into the discriminator map

  • For the Context class (and its childs SerializationContext and DeserializationContext), $attributes property has become private, so it's no longer accessible; use getAttribute() instead

  • When implementing custom type handlers and $context->shouldSerializeNull() is false (it is false by default), handlers should throw NotAcceptableException exception when null is visited.

    Before:

        public function serializeDateTimeToJson(JsonSerializationVisitor $visitor, $data, array $type, Context $context)
    {
      
      // handle custom serialization here
      return $data;
    }

    After:

      public function serializeDateTimeToJson(JsonSerializationVisitor $visitor, $data, array $type, Context $context)
  {
    if (!$context->shouldSerializeNull() && $data === null) {
        throw new NotAcceptableException();
    }
    
    // handle custom serialization here
    return $data;
  }

Deprecations (will be removed in 4.0)

  • JsonSerializationVisitor::setData will be removed, use ::visitProperty(new StaticPropertyMetadata('', 'name', 'value'), 'value') instead
  • JsonSerializationVisitor::hasData will be removed
  • VisitorInterface is internal, use SerializationVisitorInterface and DeserializationVisitorInterface instead
  • GraphNavigator is internal, use GraphNavigatorInterface instead

Other

  • Elements (as classes, interfaces, methods, properties...) marked as @internal shall not be used in user-land code. BC is not guaranteed on this elements.
  • PSR-4 is used
  • Here a list of issues and pull requests landed in 2.0