Phraseanet/lib/Alchemy/Phrasea/Border/Attribute/Story.php

<?php

/*
 * This file is part of Phraseanet
 *
 * (c) 2005-2012 Alchemy
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Alchemy\Phrasea\Border\Attribute;

/**
 * Phraseanet Border Story Attribute
 *
 * This attribute is used to store a destination story for a file, prior to
 * their record creation
 */
class Story implements Attribute
{
    protected $story;

    /**
     * Constructor
     *
     * @param \record_adapter $story   The destination story
     */
    public function __construct(\record_adapter $story)
    {
        if ( ! $story->is_grouping()) {
            throw new \InvalidArgumentException('Unable to fetch a story from string');
        }

        $this->story = $story;
    }

    /**
     * Destructor
     */
    public function __destruct()
    {
        $this->story = null;
    }

    /**
     * {@inheritdoc}
     */
    public function getName()
    {
        return self::NAME_STORY;
    }

    /**
     * {@inheritdoc}
     *
     * @return \record_adapter  The story
     */
    public function getValue()
    {
        return $this->story;
    }

    /**
     * {@inheritdoc}
     */
    public function asString()
    {
        return $this->story->get_serialize_key();
    }

    /**
     * {@inheritdoc}
     *
     * @return Story
     */
    public static function loadFromString($string)
    {
        $ids = explode('_', $string);

        try {
            $story = new \record_adapter($ids[0], $ids[1]);
        } catch (\Exception_NotFound $e) {
            throw new \InvalidArgumentException('Unable to fetch a story from string');
        }

        if ( ! $story->is_grouping()) {
            throw new \InvalidArgumentException('Unable to fetch a story from string');
        }

        return new static($story);
    }
}