Viewing file:  ValidatorChain.php (8.77 KB) -rwxrwxr-x
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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Validator;
use Countable;
use Zend\Stdlib\PriorityQueue;
class ValidatorChain implements
Countable,
ValidatorInterface
{
/**
* Default priority at which validators are added
*/
const DEFAULT_PRIORITY = 1;
/**
* @var ValidatorPluginManager
*/
protected $plugins;
/**
* Validator chain
*
* @var PriorityQueue
*/
protected $validators;
/**
* Array of validation failure messages
*
* @var array
*/
protected $messages = array();
/**
* Initialize validator chain
*/
public function __construct()
{
$this->validators = new PriorityQueue();
}
/**
* Return the count of attached validators
*
* @return int
*/
public function count()
{
return count($this->validators);
}
/**
* Get plugin manager instance
*
* @return ValidatorPluginManager
*/
public function getPluginManager()
{
if (!$this->plugins) {
$this->setPluginManager(new ValidatorPluginManager());
}
return $this->plugins;
}
/**
* Set plugin manager instance
*
* @param ValidatorPluginManager $plugins Plugin manager
* @return ValidatorChain
*/
public function setPluginManager(ValidatorPluginManager $plugins)
{
$this->plugins = $plugins;
return $this;
}
/**
* Retrieve a validator by name
*
* @param string $name Name of validator to return
* @param null|array $options Options to pass to validator constructor (if not already instantiated)
* @return ValidatorInterface
*/
public function plugin($name, array $options = null)
{
$plugins = $this->getPluginManager();
return $plugins->get($name, $options);
}
/**
* Attach a validator to the end of the chain
*
* If $breakChainOnFailure is true, then if the validator fails, the next validator in the chain,
* if one exists, will not be executed.
*
* @param ValidatorInterface $validator
* @param bool $breakChainOnFailure
* @param int $priority Priority at which to enqueue validator; defaults to
* 1 (higher executes earlier)
*
* @throws Exception\InvalidArgumentException
*
* @return self
*/
public function attach(
ValidatorInterface $validator,
$breakChainOnFailure = false,
$priority = self::DEFAULT_PRIORITY
) {
$this->validators->insert(
array(
'instance' => $validator,
'breakChainOnFailure' => (bool) $breakChainOnFailure,
),
$priority
);
return $this;
}
/**
* Proxy to attach() to keep BC
*
* @deprecated Please use attach()
* @param ValidatorInterface $validator
* @param bool $breakChainOnFailure
* @param int $priority
* @return ValidatorChain Provides a fluent interface
*/
public function addValidator(ValidatorInterface $validator, $breakChainOnFailure = false, $priority = self::DEFAULT_PRIORITY)
{
return $this->attach($validator, $breakChainOnFailure, $priority);
}
/**
* Adds a validator to the beginning of the chain
*
* If $breakChainOnFailure is true, then if the validator fails, the next validator in the chain,
* if one exists, will not be executed.
*
* @param ValidatorInterface $validator
* @param bool $breakChainOnFailure
* @return ValidatorChain Provides a fluent interface
*/
public function prependValidator(ValidatorInterface $validator, $breakChainOnFailure = false)
{
$priority = self::DEFAULT_PRIORITY;
if (!$this->validators->isEmpty()) {
$queue = $this->validators->getIterator();
$queue->setExtractFlags(PriorityQueue::EXTR_PRIORITY);
$extractedNode = $queue->extract();
$priority = $extractedNode[0] + 1;
}
$this->validators->insert(
array(
'instance' => $validator,
'breakChainOnFailure' => (bool) $breakChainOnFailure,
),
$priority
);
return $this;
}
/**
* Use the plugin manager to add a validator by name
*
* @param string $name
* @param array $options
* @param bool $breakChainOnFailure
* @param int $priority
* @return ValidatorChain
*/
public function attachByName($name, $options = array(), $breakChainOnFailure = false, $priority = self::DEFAULT_PRIORITY)
{
if (isset($options['break_chain_on_failure'])) {
$breakChainOnFailure = (bool) $options['break_chain_on_failure'];
}
if (isset($options['breakchainonfailure'])) {
$breakChainOnFailure = (bool) $options['breakchainonfailure'];
}
$this->attach($this->plugin($name, $options), $breakChainOnFailure, $priority);
return $this;
}
/**
* Proxy to attachByName() to keep BC
*
* @deprecated Please use attachByName()
* @param string $name
* @param array $options
* @param bool $breakChainOnFailure
* @return ValidatorChain
*/
public function addByName($name, $options = array(), $breakChainOnFailure = false)
{
return $this->attachByName($name, $options, $breakChainOnFailure);
}
/**
* Use the plugin manager to prepend a validator by name
*
* @param string $name
* @param array $options
* @param bool $breakChainOnFailure
* @return ValidatorChain
*/
public function prependByName($name, $options = array(), $breakChainOnFailure = false)
{
$validator = $this->plugin($name, $options);
$this->prependValidator($validator, $breakChainOnFailure);
return $this;
}
/**
* Returns true if and only if $value passes all validations in the chain
*
* Validators are run in the order in which they were added to the chain (FIFO).
*
* @param mixed $value
* @param mixed $context Extra "context" to provide the validator
* @return bool
*/
public function isValid($value, $context = null)
{
$this->messages = array();
$result = true;
foreach ($this->validators as $element) {
$validator = $element['instance'];
if ($validator->isValid($value, $context)) {
continue;
}
$result = false;
$messages = $validator->getMessages();
$this->messages = array_replace_recursive($this->messages, $messages);
if ($element['breakChainOnFailure']) {
break;
}
}
return $result;
}
/**
* Merge the validator chain with the one given in parameter
*
* @param ValidatorChain $validatorChain
* @return ValidatorChain
*/
public function merge(ValidatorChain $validatorChain)
{
foreach ($validatorChain->validators->toArray(PriorityQueue::EXTR_BOTH) as $item) {
$this->attach($item['data']['instance'], $item['data']['breakChainOnFailure'], $item['priority']);
}
return $this;
}
/**
* Returns array of validation failure messages
*
* @return array
*/
public function getMessages()
{
return $this->messages;
}
/**
* Get all the validators
*
* @return PriorityQueue
*/
public function getValidators()
{
return $this->validators->toArray(PriorityQueue::EXTR_DATA);
}
/**
* Invoke chain as command
*
* @param mixed $value
* @return bool
*/
public function __invoke($value)
{
return $this->isValid($value);
}
/**
* Deep clone handling
*/
public function __clone()
{
$this->validators = clone $this->validators;
}
/**
* Prepare validator chain for serialization
*
* Plugin manager (property 'plugins') cannot
* be serialized. On wakeup the property remains unset
* and next invocation to getPluginManager() sets
* the default plugin manager instance (ValidatorPluginManager).
*
* @return array
*/
public function __sleep()
{
return array('validators', 'messages');
}
}
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