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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Validator\Mapping;
use Symfony\Component\Validator\MetadataFactoryInterface;
use Symfony\Component\Validator\Exception\NoSuchMetadataException;
use Symfony\Component\Validator\Mapping\Loader\LoaderInterface;
use Symfony\Component\Validator\Mapping\Cache\CacheInterface;
/**
* A factory for creating metadata for PHP classes.
*
* @author Bernhard Schussek <bschussek@gmail.com>
*/
class ClassMetadataFactory implements MetadataFactoryInterface
{
/**
* The loader for loading the class metadata
* @var LoaderInterface
*/
protected $loader;
/**
* The cache for caching class metadata
* @var CacheInterface
*/
protected $cache;
protected $loadedClasses = array();
public function __construct(LoaderInterface $loader = null, CacheInterface $cache = null)
{
$this->loader = $loader;
$this->cache = $cache;
}
/**
* {@inheritdoc}
*/
public function getMetadataFor($value)
{
if (!is_object($value) && !is_string($value)) {
throw new NoSuchMetadataException(sprintf('Cannot create metadata for non-objects. Got: %s', gettype($value)));
}
$class = ltrim(is_object($value) ? get_class($value) : $value, '\\');
if (isset($this->loadedClasses[$class])) {
return $this->loadedClasses[$class];
}
if (null !== $this->cache && false !== ($this->loadedClasses[$class] = $this->cache->read($class))) {
return $this->loadedClasses[$class];
}
if (!class_exists($class) && !interface_exists($class)) {
throw new NoSuchMetadataException(sprintf('The class or interface "%s" does not exist.', $class));
}
$metadata = new ClassMetadata($class);
// Include constraints from the parent class
if ($parent = $metadata->getReflectionClass()->getParentClass()) {
$metadata->mergeConstraints($this->getMetadataFor($parent->name));
}
// Include constraints from all implemented interfaces
foreach ($metadata->getReflectionClass()->getInterfaces() as $interface) {
if ('Symfony\Component\Validator\GroupSequenceProviderInterface' === $interface->name) {
continue;
}
$metadata->mergeConstraints($this->getMetadataFor($interface->name));
}
if (null !== $this->loader) {
$this->loader->loadClassMetadata($metadata);
}
if (null !== $this->cache) {
$this->cache->write($metadata);
}
return $this->loadedClasses[$class] = $metadata;
}
/**
* {@inheritdoc}
*/
public function hasMetadataFor($value)
{
if (!is_object($value) && !is_string($value)) {
return false;
}
$class = ltrim(is_object($value) ? get_class($value) : $value, '\\');
if (class_exists($class) || interface_exists($class)) {
return true;
}
return false;
}
}