src/Biz/Course/Service/Impl/CourseDeleteServiceImpl.php

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<?php

namespace Biz\Course\Service\Impl;

use Biz\BaseService;
use Biz\Course\Dao\CourseDao;
use Biz\Course\Dao\ReviewDao;
use Biz\Course\Dao\ThreadDao;
use Biz\Course\Dao\FavoriteDao;
use Biz\Course\Dao\CourseSetDao;
use Biz\Course\Dao\CourseNoteDao;
use Biz\Course\Dao\ThreadPostDao;
use Biz\Task\Service\TaskService;
use AppBundle\Common\ArrayToolkit;
use Biz\Course\Dao\CourseMemberDao;
use Biz\User\Service\StatusService;
use Biz\Course\Dao\CourseChapterDao;
use Biz\Course\Dao\CourseNoteLikeDao;
use Biz\System\Service\SettingService;
use Biz\IM\Service\ConversationService;
use Biz\Course\Service\CourseDeleteService;
use Biz\Testpaper\Service\TestpaperService;
use Biz\Announcement\Service\AnnouncementService;

class CourseDeleteServiceImpl extends BaseService implements CourseDeleteService
{
    public function deleteCourseSet($courseSetId)
    {
        //XXX 这里仅处理删除逻辑，不对能否删除做判断
        try {
            $this->beginTransaction();

            $this->deleteCourseSetMaterial($courseSetId);

            $this->deleteCourseSetCourse($courseSetId);

            $this->deleteTestpaper($courseSetId);

            $this->deleteQuestion($courseSetId);

            $this->getCourseSetDao()->delete($courseSetId);

            $this->commit();

            return $courseSetId;
        } catch (\Exception $e) {
            $this->rollback();
            throw $e;
        }
    }

    protected function deleteCourseSetMaterial($courseSetId)
    {
        $this->getMaterialService()->deleteMaterialsByCourseSetId($courseSetId, 'course');
    }

    protected function deleteCourseSetCourse($courseSetId)
    {
        $courses = $this->getCourseDao()->findByCourseSetIds(array($courseSetId));
        if (empty($courses)) {