/**
* Class constructor
*
* This function is used to instantiate the class. The instatiation is done
* based on a lesson id. If an entry with this id is not found in the database,
* an eF_ManifestException is thrown.
* <br/>Example:
* <code>
* $manifest = new EfrontManifest(32); //32 is a lesson id
* </code>
*
* @param int $lesson_id The lesson id
* @since 1.0
* @access public
*/
function __construct($lesson_id)
{
if (!eF_checkParameter($lesson_id, 'id')) {
throw new eF_ManifestException(_INVALIDID, eF_ManifestException::INVALID_ID);
}
$lesson = eF_getTableData("lessons", "*", "id = {$lesson_id}");
if (sizeof($lesson) == 0) {
throw new eF_ManifestException(_LESSONDOESNOTEXIST, eF_GroupException::LESSON_NOT_EXISTS);
} else {
$this->lesson_id = $lesson_id;
$content = new EfrontContentTree($this->lesson_id);
$cunit = $content->getCurrentNode();
$this->addUnit(new EfrontUnit($cunit[0]));
$lunits = $content->getNextNodes();
for ($i = 0; $i < sizeof($lunits); $i++) {
$this->addUnit(new EfrontUnit($lunits[$i]));
}
}
}