Example Repository Impl. with Doctrine's Entity Manager

<?php
namespace MyApp\Infrastructure;

use Doctrine\Common\Persistence\ObjectRepository;
use Doctrine\ORM\AbstractQuery;
use Doctrine\ORM\EntityManager;
use MyApp\Domain\FooEntities\Foo;
use MyAp\Domain\FooEntities\FooRepository;

class DoctrineFooRepository implements FooRepository
{
    /**
     * @var ObjectRepository
     */
    private $repository;

    /**
     * @var EntityManager
     */
    private $entityManager;

    public function __construct(ObjectRepository $repository, EntityManager $entityManager)
    {

        $this->repository = $repository;
        $this->entityManager = $entityManager;
    }

    /**
     * Retrieves all Foo entities
     *
     * @return Foo[]
     */
    public function all()
    {
        return $this->repository->findAll();
    }

    /**
     * Finds a Foo Entity by ID if it exists
     *
     * @param int $FooId
     * @return Foo|null
     */
    public function findById($FooId)
    {
        return $this->repository->find($FooId);
    }

    /**
     * Stores a Foo Entity
     *
     * @param Foo $Foo
     */
    public function update(Foo $Foo)
    {
        $this->entityManager->persist($Foo);
        $this->entityManager->flush($Foo);
    }

    /**
     * Returns an associative array of Foo entity addresses with the ID as the key and address string as the value
     *
     * @return string[]
     */
    public function allAddresses()
    {

        $results = $this->repository->findAll();

        $resultsByFooId = [];
        foreach($results as $result) {
            $address = $result->getFullAddress();
            $resultsByFooId[ $result->getId() ] = $address;
        }
        return $resultsByFooId;
    }
}