doctrine.php

<?php

$account = new Account();
$account->setName('Company');
$account->setPlaceOfJurisdiction('Feldkirch');

$this->em->persist($account);
$this->em->flush();

// echos "1"
echo $this->em->getConnection()->query('SELECT COUNT(*) FROM co_accounts')->fetchColumn();

$this->em->getConnection()->exec('DELETE FROM co_accounts');

// does nothing
$this->em->refresh($account);

// state is managed
$state = $this->em->getUnitOfWork()->getEntityState($account);

$account->setName('Bas');
$this->em->persist($account);
$this->em->flush();

// echos "0"
echo $this->em->getConnection()->query('SELECT COUNT(*) FROM co_accounts')->fetchColumn(); // 0