/**
* @access public
*/
public static final function GetListOfParentPathes($lessonId, $breakOnLessonId = false, $breakBeforeLesson = false, $arIgnoreEdges = array())
{
$arPathes = array(array($lessonId));
$arAlreadyProcessedLessons = array($lessonId);
if ($breakOnLessonId !== false) {
// This lesson must be interpreted as parentless.
// This behaviour can be emulated by adding to
// $arAlreadyProcessedLessons all immediate parents
// of this lesson.
$arEdges = self::ListImmediateParents($breakOnLessonId);
foreach ($arEdges as $arEdge) {
$arAlreadyProcessedLessons[] = (int) $arEdge['PARENT_LESSON'];
}
}
if ($breakBeforeLesson !== false) {
$arAlreadyProcessedLessons[] = (int) $breakBeforeLesson;
}
$arAllPathes = self::GetListOfParentPathesRecursive($arPathes, $arAlreadyProcessedLessons, $arIgnoreEdges);
$arObjPathes = array();
foreach ($arAllPathes as $arPathBackward) {
$arPath = array_reverse($arPathBackward);
$o = new CLearnPath($arPath);
$o->PopBottom();
// remove $lessonId
// skip empty pathes
if ($o->Count() > 0) {
$arObjPathes[] = $o;
}
}
return $arObjPathes;
}
