ilter to the list of possible filters.
     *
     * @param string $name      The name of the filter.
     * @param string $className The class name of the filter.
     */
    public function addFilter($name, $className)
    {
        $this->_attributes['filters'][$name] = $className;
    }

    /**
     * Gets the class name for a given filter name.
     *
     * @param string $name The name of the filter.
     *
     * @return string|null The class name of the filter, or null if it is not
     *  defined.
     *
     * @psalm-return ?class-string
     */
    public function getFilterClassName($name)
    {
        return isset($this->_attributes['filters'][$name])
            ? $this->_attributes['filters'][$name]
            : null;
    }

    /**
     * Sets default repository class.
     *
     * @since 2.2
     *
     * @param string $className
     *
     * @return void
     *
     * @throws ORMException If $classname is not an ObjectRepository.
     */
    public function setDefaultRepositoryClassName($className)
    {
        $reflectionClass = new \ReflectionClass($className);

        if ( ! $reflectionClass->implementsInterface(ObjectRepository::class)) {
            throw ORMException::invalidEntityRepository($className);
        }

        $this->_attributes['defaultRepositoryClassName'] = $className;
    }

    /**
     * Get default repository class.
     *
     * @since 2.2
     *
     * @return string
     *
     * @psalm-return class-string
     */
    public function getDefaultRepositoryClassName()
    {
        return isset($this->_attributes['defaultRepositoryClassName'])
            ? $this->_attributes['defaultRepositoryClassName']
            : EntityRepository::class;
    }

    /**
     * Sets naming strategy.
     *
     * @since 2.3
     *
     * @param NamingStrategy $namingStrategy
     *
     * @return void
     */
    public function setNamingStrategy(NamingStrategy $namingStrategy)
    {
        $this->_attributes['namingStrategy'] = $namingStrategy;
    }

    /**
     * Gets naming strategy..
     *
     * @since 2.3
     *
     * @return NamingStrategy
     */
    public function getNamingStrategy()
    {
        if ( ! isset($this->_attributes['namingStrategy'])) {
            $this->_attributes['namingStrategy'] = new DefaultNamingStrategy();
        }

        return $this->_attributes['namingStrategy'];
    }

    /**
     * Sets quote strategy.
     *
     * @since 2.3
     *
     * @param \Doctrine\ORM\Mapping\QuoteStrategy $quoteStrategy
     *
     * @return void
     */
    public function setQuoteStrategy(QuoteStrategy $quoteStrategy)
    {
        $this->_attributes['quoteStrategy'] = $quoteStrategy;
    }

    /**
     * Gets quote strategy.
     *
     * @since 2.3
     *
     * @return \Doctrine\ORM\Mapping\QuoteStrategy
     */
    public function getQuoteStrategy()
    {
        if ( ! isset($this->_attributes['quoteStrategy'])) {
            $this->_attributes['quoteStrategy'] = new DefaultQuoteStrategy();
        }

        return $this->_attributes['quoteStrategy'];
    }

    /**
     * Set the entity listener resolver.
     *
     * @since 2.4
     * @param \Doctrine\ORM\Mapping\EntityListenerResolver $resolver
     */
    public function setEntityListenerResolver(EntityListenerResolver $resolver)
    {
        $this->_attributes['entityListenerResolver'] = $resolver;
    }

    /**
     * Get the entity listener resolver.
     *
     * @since 2.4
     * @return \Doctrine\ORM\Mapping\EntityListenerResolver
     */
    public function getEntityListenerResolver()
    {
        if ( ! isset($this->_attributes['entityListenerResolver'])) {
            $this->_attributes['entityListenerResolver'] = new DefaultEntityListenerResolver();
        }

        return $this->_attributes['entityListenerResolver'];
    }

    /**
     * Set the entity repository factory.
     *
     * @since 2.4
     * @param \Doctrine\ORM\Repository\RepositoryFactory $repositoryFactory
     */
    public function setRepositoryFactory(RepositoryFactory $repositoryFactory)
    {
        $this->_attributes['repositoryFactory'] = $repositoryFactory;
    }

    /**
     * Get the entity repository factory.
     *
     * @since 2.4
     * @return \Doctrine\ORM\Repository\RepositoryFactory
     */
    public function getRepositoryFactory()
    {
        return isset($this->_attributes['repositoryFactory'])
            ? $this->_attributes['repositoryFactory']
            : new DefaultRepositoryFactory();
    }

    /**
     * @since 2.5
     *
     * @return boolean
     */
    public function isSecondLevelCacheEnabled()
    {
        return isset($this->_attributes['isSecondLevelCacheEnabled'])
            ? $this->_attributes['isSecondLevelCacheEnabled']
            : false;
    }

    /**
     * @since 2.5
     *
     * @param boolean $flag
     *
     * @return void
     */
    public function setSecondLevelCacheEnabled($flag = true)
    {
        $this->_attributes['isSecondLevelCacheEnabled'] = (boolean) $flag;
    }

    /**
     * @since 2.5
     *
     * @param \Doctrine\ORM\Cache\CacheConfiguration $cacheConfig
     *
     * @return void
     */
    public function setSecondLevelCacheConfiguration(CacheConfiguration $cacheConfig)
    {
        $this->_attributes['secondLevelCacheConfiguration'] = $cacheConfig;
    }

    /**
     * @since 2.5
     *
     * @return  \Doctrine\ORM\Cache\CacheConfiguration|null
     */
    public function getSecondLevelCacheConfiguration()
    {
        if ( ! isset($this->_attributes['secondLevelCacheConfiguration']) && $this->isSecondLevelCacheEnabled()) {
            $this->_attributes['secondLevelCacheConfiguration'] = new CacheConfiguration();
        }

        return isset($this->_attributes['secondLevelCacheConfiguration'])
            ? $this->_attributes['secondLevelCacheConfiguration']
            : null;
    }

    /**
     * Returns query hints, which will be applied to every query in application
     *
     * @since 2.5
     *
     * @return array
     */
    public function getDefaultQueryHints()
    {
        return isset($this->_attributes['defaultQueryHints']) ? $this->_attributes['defaultQueryHints'] : [];
    }

    /**
     * Sets array of query hints, which will be applied to every query in application
     *
     * @since 2.5
     *
     * @param array $defaultQueryHints
     */
    public function setDefaultQueryHints(array $defaultQueryHints)
    {
        $this->_attributes['defaultQueryHints'] = $defaultQueryHints;
    }

    /**
     * Gets the value of a default query hint. If the hint name is not recognized, FALSE is returned.
     *
     * @since 2.5
     *
     * @param string $name The name of the hint.
     *
     * @return mixed The value of the hint or FALSE, if the hint name is not recognized.
     */
    public function getDefaultQueryHint($name)
    {
        return isset($this->_attributes['defaultQueryHints'][$name])
            ? $this->_attributes['defaultQueryHints'][$name]
            : false;
    }

    /**
     * Sets a default query hint. If the hint name is not recognized, it is silently ignored.
     *
     * @since 2.5
     *
     * @param string $name  The name of the hint.
     * @param mixed  $value The value of the hint.
     */
    public function setDefaultQueryHint($name, $value)
    {
        $this->_attributes['defaultQueryHints'][$name] = $value;
    }
}

interface_exists(MappingDriver::class);