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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;
- /**
- * Specifies whether and how a traversable object should be traversed.
- *
- * If the node traverser traverses a node whose value is an instance of
- * {@link \Traversable}, and if that node is either a class node or if
- * cascading is enabled, then the node's traversal strategy will be checked.
- * Depending on the requested traversal strategy, the node traverser will
- * iterate over the object and cascade each object or collection returned by
- * the iterator.
- *
- * The traversal strategy is ignored for arrays. Arrays are always iterated.
- *
- * @author Bernhard Schussek <bschussek@gmail.com>
- *
- * @see CascadingStrategy
- */
- class TraversalStrategy
- {
- /**
- * Specifies that a node's value should be iterated only if it is an
- * instance of {@link \Traversable}.
- */
- const IMPLICIT = 1;
- /**
- * Specifies that a node's value should never be iterated.
- */
- const NONE = 2;
- /**
- * Specifies that a node's value should always be iterated. If the value is
- * not an instance of {@link \Traversable}, an exception should be thrown.
- */
- const TRAVERSE = 4;
- /**
- * Specifies that nested instances of {@link \Traversable} should never be
- * iterated. Can be combined with {@link IMPLICIT} or {@link TRAVERSE}.
- *
- * @deprecated since version 2.5, to be removed in 3.0. This constant was added for backwards compatibility only.
- *
- * @internal
- */
- const STOP_RECURSION = 8;
- /**
- * Not instantiable.
- */
- private function __construct()
- {
- }
- }
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