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1 <?php
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2
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3 /*
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4 * This file is part of the Symfony package.
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5 *
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6 * (c) Fabien Potencier <fabien@symfony.com>
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7 *
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8 * For the full copyright and license information, please view the LICENSE
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9 * file that was distributed with this source code.
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10 */
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11
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12 namespace Symfony\Component\Validator\Mapping;
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13
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14 /**
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15 * Specifies whether an object should be cascaded.
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16 *
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17 * Cascading is relevant for any node type but class nodes. If such a node
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18 * contains an object of value, and if cascading is enabled, then the node
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19 * traverser will try to find class metadata for that object and validate the
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20 * object against that metadata.
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21 *
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22 * If no metadata is found for a cascaded object, and if that object implements
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23 * {@link \Traversable}, the node traverser will iterate over the object and
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24 * cascade each object or collection contained within, unless iteration is
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25 * prohibited by the specified {@link TraversalStrategy}.
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26 *
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27 * Although the constants currently represent a boolean switch, they are
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28 * implemented as bit mask in order to allow future extensions.
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29 *
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30 * @author Bernhard Schussek <bschussek@gmail.com>
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31 *
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32 * @see TraversalStrategy
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33 */
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34 class CascadingStrategy
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35 {
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36 /**
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37 * Specifies that a node should not be cascaded.
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38 */
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39 const NONE = 1;
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40
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41 /**
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42 * Specifies that a node should be cascaded.
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43 */
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44 const CASCADE = 2;
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45
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46 /**
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47 * Not instantiable.
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48 */
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49 private function __construct()
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50 {
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51 }
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52 }
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