66 lines
1.8 KiB
PHP
66 lines
1.8 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Validator\Mapping;
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/**
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* Specifies whether and how a traversable object should be traversed.
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*
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* If the node traverser traverses a node whose value is an instance of
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* {@link \Traversable}, and if that node is either a class node or if
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* cascading is enabled, then the node's traversal strategy will be checked.
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* Depending on the requested traversal strategy, the node traverser will
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* iterate over the object and cascade each object or collection returned by
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* the iterator.
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*
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* The traversal strategy is ignored for arrays. Arrays are always iterated.
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*
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* @author Bernhard Schussek <bschussek@gmail.com>
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*
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* @see CascadingStrategy
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*/
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class TraversalStrategy
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{
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/**
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* Specifies that a node's value should be iterated only if it is an
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* instance of {@link \Traversable}.
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*/
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const IMPLICIT = 1;
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/**
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* Specifies that a node's value should never be iterated.
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*/
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const NONE = 2;
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/**
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* Specifies that a node's value should always be iterated. If the value is
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* not an instance of {@link \Traversable}, an exception should be thrown.
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*/
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const TRAVERSE = 4;
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/**
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* Specifies that nested instances of {@link \Traversable} should never be
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* iterated. Can be combined with {@link IMPLICIT} or {@link TRAVERSE}.
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*
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* @deprecated since version 2.5, to be removed in 3.0. This constant was added for backwards compatibility only.
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*
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* @internal
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*/
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const STOP_RECURSION = 8;
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/**
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* Not instantiable.
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*/
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private function __construct()
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{
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}
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}
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