class.ilHTLMStakeholder.php

Go to the documentation of this file.

<?php

use ILIAS\ResourceStorage\Stakeholder\AbstractResourceStakeholder;
use ILIAS\ResourceStorage\Identification\ResourceIdentification;

class ilHTLMStakeholder extends AbstractResourceStakeholder
{
    public function getId(): string
    {
        return 'htlm';
    }

    public function getOwnerOfNewResources(): int
    {
        return $this->default_owner;
    }

    public function getLocationURIForResourceUsage(ResourceIdentification $identification): ?string
    {
        $db = $this->resolveDB();
        if ($db === null) {
            return null;
        }
        $res = $db->queryF(
            'SELECT ref_id FROM file_based_lm
                    JOIN object_reference ON file_based_lm.id = object_reference.obj_id
                    WHERE rid = %s',
            ['text'],
            [$identification->serialize()]
        );
        if ($row = $db->fetchAssoc($res)) {
            return ilLink::_getStaticLink((int) $row['ref_id']);
        }
    }

    public function isResourceInUse(ResourceIdentification $identification): bool
    {
        $db = $this->resolveDB();
        if ($db === null) {
            return true; // we assume it is in use
        }
        $res = $db->queryF(
            'SELECT ref_id FROM file_based_lm WHERE rid = %s',
            ['text'],
            [$identification->serialize()]
        );
        return $db->numRows($res) > 0;
    }

    private function resolveDB(): ?ilDBInterface
    {
        global $DIC;
        if ($DIC->isDependencyAvailable('database')) {
            return $DIC->database();
        }
        return null;
    }

}