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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;
use Symfony\Component\Validator\Exception\NoSuchMetadataException;
use Symfony\Component\Validator\Exception\UnexpectedTypeException;
use Symfony\Component\Translation\TranslatorInterface;
/**
* Default implementation of {@link ValidationVisitorInterface} and
* {@link GlobalExecutionContextInterface}.
*
* @author Bernhard Schussek <bschussek@gmail.com>
*/
class ValidationVisitor implements ValidationVisitorInterface, GlobalExecutionContextInterface
{
/**
* @var mixed
*/
private $root;
/**
* @var MetadataFactoryInterface
*/
private $metadataFactory;
/**
* @var ConstraintValidatorFactoryInterface
*/
private $validatorFactory;
/**
* @var TranslatorInterface
*/
private $translator;
/**
* @var null|string
*/
private $translationDomain;
/**
* @var array
*/
private $objectInitializers;
/**
* @var ConstraintViolationList
*/
private $violations;
/**
* @var array
*/
private $validatedObjects = array();
/**
* Creates a new validation visitor.
*
* @param mixed $root The value passed to the validator.
* @param MetadataFactoryInterface $metadataFactory The factory for obtaining metadata instances.
* @param ConstraintValidatorFactoryInterface $validatorFactory The factory for creating constraint validators.
* @param TranslatorInterface $translator The translator for translating violation messages.
* @param string|null $translationDomain The domain of the translation messages.
* @param ObjectInitializerInterface[] $objectInitializers The initializers for preparing objects before validation.
*
* @throws UnexpectedTypeException If any of the object initializers is not an instance of ObjectInitializerInterface
*/
public function __construct($root, MetadataFactoryInterface $metadataFactory, ConstraintValidatorFactoryInterface $validatorFactory, TranslatorInterface $translator, $translationDomain = null, array $objectInitializers = array())
{
foreach ($objectInitializers as $initializer) {
if (!$initializer instanceof ObjectInitializerInterface) {
throw new UnexpectedTypeException($initializer, 'Symfony\Component\Validator\ObjectInitializerInterface');
}
}
$this->root = $root;
$this->metadataFactory = $metadataFactory;
$this->validatorFactory = $validatorFactory;
$this->translator = $translator;
$this->translationDomain = $translationDomain;
$this->objectInitializers = $objectInitializers;
$this->violations = new ConstraintViolationList();
}
/**
* {@inheritdoc}
*/
public function visit(MetadataInterface $metadata, $value, $group, $propertyPath)
{
$context = new ExecutionContext(
$this,
$this->translator,
$this->translationDomain,
$metadata,
$value,
$group,
$propertyPath
);
$context->validateValue($value, $metadata->findConstraints($group));
}
/**
* {@inheritdoc}
*/
public function validate($value, $group, $propertyPath, $traverse = false, $deep = false)
{
if (null === $value) {
return;
}
if (is_object($value)) {
$hash = spl_object_hash($value);
// Exit, if the object is already validated for the current group
if (isset($this->validatedObjects[$hash][$group])) {
return;
}
// Remember validating this object before starting and possibly
// traversing the object graph
$this->validatedObjects[$hash][$group] = true;
foreach ($this->objectInitializers as $initializer) {
if (!$initializer instanceof ObjectInitializerInterface) {
throw new \LogicException('Validator initializers must implement ObjectInitializerInterface.');
}
$initializer->initialize($value);
}
}
// Validate arrays recursively by default, otherwise every driver needs
// to implement special handling for arrays.
// https://github.com/symfony/symfony/issues/6246
if (is_array($value) || ($traverse && $value instanceof \Traversable)) {
foreach ($value as $key => $element) {
// Ignore any scalar values in the collection
if (is_object($element) || is_array($element)) {
// Only repeat the traversal if $deep is set
$this->validate($element, $group, $propertyPath.'['.$key.']', $deep, $deep);
}
}
try {
$this->metadataFactory->getMetadataFor($value)->accept($this, $value, $group, $propertyPath);
} catch (NoSuchMetadataException $e) {
// Metadata doesn't necessarily have to exist for
// traversable objects, because we know how to validate
// them anyway. Optionally, additional metadata is supported.
}
} else {
$this->metadataFactory->getMetadataFor($value)->accept($this, $value, $group, $propertyPath);
}
}
/**
* {@inheritdoc}
*/
public function getViolations()
{
return $this->violations;
}
/**
* {@inheritdoc}
*/
public function getRoot()
{
return $this->root;
}
/**
* {@inheritdoc}
*/
public function getVisitor()
{
return $this;
}
/**
* {@inheritdoc}
*/
public function getValidatorFactory()
{
return $this->validatorFactory;
}
/**
* {@inheritdoc}
*/
public function getMetadataFactory()
{
return $this->metadataFactory;
}
}
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