Fatal Error when installing stof bundle and doctrine extensions (tree) - symfony

Question

Here is the problem : I don't succeed to install stof bundle with symphony 2.0
How I proceed :
I add this lines in deps file :
[GedmoDoctrineExtensions]
git=https://github.com/l3pp4rd/DoctrineExtensions.git
target=bundles/gedmo-doctrine-extensions
version=e93fc1e0a0
[StofDoctrineExtensionsBundle]
git=https://github.com/stof/StofDoctrineExtensionsBundle.git
target=bundles/Stof/DoctrineExtensions/Bundle
version=6b2a8c74bd
Then I run the command
php bin/vendors install --reinstall
All is fine.
Then I activate extensions in concerned files
# config.yml
stof_doctrine_extensions:
default_locale: en_US
orm:
default:
tree: true
orm:
auto_generate_proxy_classes: %kernel.debug%
auto_mapping: true
mappings:
StofDoctrineExtensionsBundle: ~
# AppKernel.php
use Symfony\Component\HttpKernel\Kernel;
use Symfony\Component\Config\Loader\LoaderInterface;
class AppKernel extends Kernel
{
public function registerBundles()
{
$bundles = array(
[...]
new Stof\DoctrineExtensionsBundle\StofDoctrineExtensionsBundle(),
[...]
);
# autoload.php
use Symfony\Component\ClassLoader\UniversalClassLoader;
use Doctrine\Common\Annotations\AnnotationRegistry;
$loader = new UniversalClassLoader();
$loader->registerNamespaces(array(
'Gedmo' => __DIR__.'/../vendor/gedmo-doctrine-extensions/lib',
'Stof' => __DIR__.'/../vendor/bundles',
[...]
));
At last, I add my entity Category, as in this tutorial http://gediminasm.org/article/tree-nestedset-behavior-extension-for-doctrine-2#including-extension
<?php
namespace Myproject\MyBundle\Entity;
use Gedmo\Mapping\Annotation as Gedmo;
use Doctrine\ORM\Mapping as ORM;
/**
* #Gedmo\Tree(type="nested")
* #ORM\Table(name="Category")
* use repository for handy tree functions
* #ORM\Entity(repositoryClass="Gedmo\Tree\Entity\Repository\NestedTreeRepository")
*/
class Category
{
/**
* #ORM\Column(name="id", type="integer")
* #ORM\Id
* #ORM\GeneratedValue
*/
private $id;
/**
* #ORM\Column(name="title", type="string", length=64)
*/
private $title;
/**
* #Gedmo\TreeLeft
* #ORM\Column(name="lft", type="integer")
*/
private $lft;
/**
* #Gedmo\TreeLevel
* #ORM\Column(name="lvl", type="integer")
*/
private $lvl;
/**
* #Gedmo\TreeRight
* #ORM\Column(name="rgt", type="integer")
*/
private $rgt;
/**
* #Gedmo\TreeRoot
* #ORM\Column(name="root", type="integer", nullable=true)
*/
private $root;
/**
* #Gedmo\TreeParent
* #ORM\ManyToOne(targetEntity="Category", inversedBy="children")
* #ORM\JoinColumn(name="parent_id", referencedColumnName="id", onDelete="SET NULL")
*/
private $parent;
/**
* #ORM\OneToMany(targetEntity="Category", mappedBy="parent")
* #ORM\OrderBy({"lft" = "ASC"})
*/
private $children;
}
But when I run the command php app/console generate:doctrine:entities MyProjectMyBundle:Category, I have the following error :
Fatal error: Out of memory (allocated -1227096064) (tried to allocate 261900 bytes) in /home/user/Project/vendor/doctrine/lib/Doctrine/ORM/Mapping/Driver/XmlDriver.php on line 75
And sometimes this one :
Fatal error: Out of memory (allocated -1222901760) (tried to allocate 261900 bytes) in /home/user/Project/vendor/gedmo-doctrine-extensions/lib/Gedmo/Mapping/MappedEventSubscriber.php on line 176
What do I do wrong ?

Answer 1

I would say that these errors have nothing to do with Symfony nor Doctrine. To me it's more like a PHP configuration issue.
You can try to increase the memory_limit value in your php.ini file. A memory limit of 128MB should suffice in most cases but if your project is handling a lot of data it may need more.

Answer 2

Try to load only the tree extention:
doctrine:
orm:
entity_managers:
default:
mappings:
gedmo_tree:
type: annotation
prefix: Gedmo\Tree\Entity
dir: "%kernel.root_dir%/../vendor/gedmo/doctrine-extensions/lib/Gedmo/Tree/Entity"
alias: GedmoTree # this one is optional and will default to the name set for the mapping
is_bundle: false
As the documentation says: https://github.com/stof/StofDoctrineExtensionsBundle/blob/master/Resources/doc/index.rst#add-the-extensions-to-your-mapping