<?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;

use Symfony\Component\Validator\Constraint;

abstract class ElementMetadata

{

    public $constraints = array();

    public $constraintsByGroup = array();

    /**

     * Returns the names of the properties that should be serialized.

     *

     * @return array

     */

    public function __sleep()

    {

        return array(

            'constraints',

            'constraintsByGroup',

        );

    }

    /**

     * Clones this object.

     */

    public function __clone()

    {

        $constraints = $this->constraints;

        $this->constraints = array();

        $this->constraintsByGroup = array();

        foreach ($constraints as $constraint) {

            $this->addConstraint(clone $constraint);

        }

    }

    /**

     * Adds a constraint to this element.

     *

     * @param Constraint $constraint

     */

    public function addConstraint(Constraint $constraint)

    {

        $this->constraints[] = $constraint;

        foreach ($constraint->groups as $group) {

            $this->constraintsByGroup[$group][] = $constraint;

        }

        return $this;

    }

    /**

     * Returns all constraints of this element.

     *

     * @return array  An array of Constraint instances

     */

    public function getConstraints()

    {

        return $this->constraints;

    }

    /**

     * Returns whether this element has any constraints.

     *

     * @return Boolean

     */

    public function hasConstraints()

    {

        return count($this->constraints) > 0;

    }

    /**

     * Returns the constraints of the given group and global ones (* group).

     *

     * @param string $group The group name

     *

     * @return array An array with all Constraint instances belonging to the group

     */

    public function findConstraints($group)

    {

        return isset($this->constraintsByGroup[$group])

                ? $this->constraintsByGroup[$group]

                : array();

    }

}