Currently we have tons of code in the ODM/ORMs regarding code generation that are ugly to extend and maintain. We should extract all them into a new component, for example named: doctrine-code-generator

• It should be feed by only instances of Doctrine\Common\Persistence\Mapping\ObjectMetadata into a twig template.
• A base template for an entity/document is shipped
• Maybe ORM/ODM specific child templates or twig traits are necessary to handle writing annotations. This could also be done by adding hooks into the code-generation somehow.
• Each entity of the user can provide its own template, for examples from a configurable directory "code_templates/Vendor.ProjectBundle.Entity.User.twig" to extend the base template and add own code.
• As a perspective we should aim for 5.4 generating a trait so that you can have your entity "class User { use UserBase; }

  "

Following the ZF and SF2 Standard for Exceptions we should have base exceptions in Common

use Zend\Form\Annotation;

[...]

works:

• @Annotation\Options( {"label":Namespace\Entity::LABEL}

  )
  or

• @Annotation\Options( {"label":Namespace\Entity::_LABEL}

  )
  or

• @Annotation\Options( {"label":Namespace\Entity::LA_BEL}

  )

works not:

• @Annotation\Options( {"label":Namespace\Entity::LABEL_}

  )

Error message:

/vendor/doctrine/common/lib/Doctrine/Common/Annotations/AnnotationException.php:52

[Semantical Error] Couldn't find constant Namespace\Entity\::LABEL, property ...

The _ at the end is missing.