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DoctrineBackendOptimizeListener   A

Complexity

Total Complexity 4

Size/Duplication

Total Lines 29
Duplicated Lines 0 %

Coupling/Cohesion

Components 1
Dependencies 1

Importance

Changes 3
Bugs 1 Features 0
Metric Value
wmc 4
c 3
b 1
f 0
lcom 1
cbo 1
dl 0
loc 29
rs 10

2 Methods

Rating   Name   Duplication   Size   Complexity  
A __construct() 0 4 1
A iterate() 0 10 3
1
<?php
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/*
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 * This file is part of the Sonata project.
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 *
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 * (c) Thomas Rabaix <[email protected]>
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 *
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 * For the full copyright and license information, please view the LICENSE
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 * file that was distributed with this source code.
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 */
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namespace Sonata\NotificationBundle\Event;
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use Doctrine\Bundle\DoctrineBundle\Registry;
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use Symfony\Bridge\Doctrine\RegistryInterface;
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/**
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 * Doctrine context optimizer
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 * Used with doctrine backend to clear context taking care of the batch iterations.
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 *
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 * @author Kevin Nedelec <[email protected]>
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 *
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 * Class DoctrineOptimizeListener
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 */
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class DoctrineBackendOptimizeListener implements IterationListener
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{
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    /**
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     * @var Registry
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     */
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    protected $doctrine;
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    /**
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     * @param RegistryInterface $doctrine
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     */
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    public function __construct(RegistryInterface $doctrine)
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    {
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        $this->doctrine = $doctrine;
0 ignored issues
show
Documentation Bug introduced by
It seems like $doctrine of type object<Symfony\Bridge\Doctrine\RegistryInterface> is incompatible with the declared type object<Doctrine\Bundle\DoctrineBundle\Registry> of property $doctrine.

Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.

Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..

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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function iterate(IterateEvent $event)
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    {
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        if (!method_exists($event->getIterator(), 'isBufferEmpty')) {
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            throw new \LogicException('You can\'t use DoctrineOptimizeListener with this iterator');
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        }
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        if ($event->getIterator()->isBufferEmpty()) {
0 ignored issues
show
Bug introduced by
It seems like you code against a concrete implementation and not the interface Sonata\NotificationBundl...essageIteratorInterface as the method isBufferEmpty() does only exist in the following implementations of said interface: Sonata\NotificationBundl...rroneousMessageIterator, Sonata\NotificationBundl...eManagerMessageIterator, Sonata\NotificationBundl...eManagerMessageIterator.

Let’s take a look at an example:

interface User
{
    /** @return string */
    public function getPassword();
}

class MyUser implements User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}

In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different implementation of User which does not have a getDisplayName() method, the code will break.

Available Fixes

  1. Change the type-hint for the parameter:

    class AuthSystem
    {
        public function authenticate(MyUser $user) { /* ... */ }
    }
    
  2. Add an additional type-check:

    class AuthSystem
    {
        public function authenticate(User $user)
        {
            if ($user instanceof MyUser) {
                $this->logger->info(/** ... */);
            }
    
            // or alternatively
            if ( ! $user instanceof MyUser) {
                throw new \LogicException(
                    '$user must be an instance of MyUser, '
                   .'other instances are not supported.'
                );
            }
    
        }
    }
    
Note: PHP Analyzer uses reverse abstract interpretation to narrow down the types inside the if block in such a case.
  1. Add the method to the interface:

    interface User
    {
        /** @return string */
        public function getPassword();
    
        /** @return string */
        public function getDisplayName();
    }
    
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            $this->doctrine->getManager()->getUnitOfWork()->clear();
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        }
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    }
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}
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