PHP ilObjMediaObject::delete方法代码示例

 /**
  * Deletes all data of a room sharing pool.
  *
  * @param ilObjRoomSharing $a_pool
  *
  * @return bool true if deletion was successful
  */
 public static function deletePool(ilObjRoomSharing $a_pool)
 {
     $db = new ilRoomSharingDatabase($a_pool->getPoolId());
     // Calendar
     $calendar_id = $db->getCalendarId();
     $db->deleteCalendar($calendar_id);
     // Bookings
     $all_bookings_ids = $db->getAllBookingsIds();
     // Calendar-Entries
     $db->deleteCalendarEntriesOfBookings($all_bookings_ids);
     foreach ($all_bookings_ids as $booking_id) {
         $db->deleteBooking($booking_id);
     }
     // Booking attributes
     $all_booking_attributes = $db->getAllBookingAttributes();
     foreach ($all_booking_attributes as $booking_attribute) {
         $db->deleteBookingAttribute($booking_attribute['id']);
         $db->deleteAttributeBookingAssign($booking_attribute['id']);
     }
     // Rooms
     $all_room_ids = $db->getAllRoomIds();
     foreach ($all_room_ids as $room_id) {
         $db->deleteRoom($room_id);
     }
     // Room attributes
     $all_room_attributes = $db->getAllRoomAttributes();
     foreach ($all_room_attributes as $room_attribute) {
         $db->deleteRoomAttribute($room_attribute['id']);
         $db->deleteAttributeRoomAssign($room_attribute['id']);
     }
     // Privileges
     $classes = $db->getClasses();
     foreach ($classes as $class) {
         $db->deleteClass($class['id']);
         // Takes also care of assignments
     }
     // Floorplans
     $all_floorplans_ids = $db->getAllFloorplanIds();
     foreach ($all_floorplans_ids as $floor_plan_id) {
         $db->deleteFloorplan($floor_plan_id);
     }
     // Files of floorplans and rooms user agreement
     foreach ($all_floorplans_ids as $floor_plan_file_id) {
         if (!empty($floor_plan_file_id) && $floor_plan_file_id != "0") {
             $floor_plan_file = new ilObjMediaObject($floor_plan_file_id);
             $floor_plan_file->delete();
         }
     }
     $rooms_agreement_file_id = $a_pool->getRoomsAgreementFileId();
     if (ilRoomSharingNumericUtils::isPositiveNumber($rooms_agreement_file_id)) {
         $rooms_agreement_file = new ilObjMediaObject($rooms_agreement_file_id);
         $rooms_agreement_file->delete();
     }
     // Pool itself
     $db->deletePoolEntry("SURE");
 }

 public function saveStatutoryRegulationsObject()
 {
     require_once 'Services/RTE/classes/class.ilRTE.php';
     if (isset($_POST['statutory_regulations']) && $_POST['statutory_regulations'] != NULL) {
         $this->genSetData->set('statutory_regulations', ilRTE::_replaceMediaObjectImageSrc($_POST['statutory_regulations'], 0), 'regulations');
         // copy temporary media objects (frm~)
         include_once 'Services/MediaObjects/classes/class.ilObjMediaObject.php';
         $mediaObjects = ilRTE::_getMediaObjects($_POST['statutory_regulations'], 0);
         $myMediaObjects = ilObjMediaObject::_getMobsOfObject('pays~:html', ilObject::_lookupObjId($this->ref_id));
         foreach ($mediaObjects as $mob) {
             foreach ($myMediaObjects as $myMob) {
                 if ($mob == $myMob) {
                     // change usage
                     ilObjMediaObject::_removeUsage($mob, 'pays~:html', ilObject::_lookupObjId($this->ref_id));
                     break;
                 }
             }
             ilObjMediaObject::_saveUsage($mob, 'pays~:html', ilObject::_lookupObjId($this->ref_id));
         }
     } else {
         $this->genSetData->set('statutory_regulations', NULL, 'regulations');
     }
     // remove usage of deleted media objects
     include_once 'Services/MediaObjects/classes/class.ilObjMediaObject.php';
     $oldMediaObjects = ilObjMediaObject::_getMobsOfObject('pays~:html', ilObject::_lookupObjId($this->ref_id));
     $curMediaObjects = ilRTE::_getMediaObjects($_POST['statutory_regulations'], 0);
     foreach ($oldMediaObjects as $oldMob) {
         $found = false;
         foreach ($curMediaObjects as $curMob) {
             if ($oldMob == $curMob) {
                 $found = true;
                 break;
             }
         }
         if (!$found) {
             if (ilObjMediaObject::_exists($oldMob)) {
                 ilObjMediaObject::_removeUsage($oldMob, 'pays~:html', ilObject::_lookupObjId($this->ref_id));
                 $mob_obj = new ilObjMediaObject($oldMob);
                 $mob_obj->delete();
             }
         }
     }
     $this->genSetData->set('show_sr_shoppingcart', isset($_POST['show_sr_shoppingcart']) ? 1 : 0, 'regulations');
     $this->genSetData->set('attach_sr_invoice', isset($_POST['attach_sr_invoice']) ? 1 : 0, 'regulations');
     $this->StatutoryRegulationsObject();
     ilUtil::sendSuccess($this->lng->txt('pays_updated_general_settings'));
     return true;
 }

 /**
  * Delete news item
  *
  */
 public function delete()
 {
     global $ilDB;
     // delete il_news_read entries
     $ilDB->manipulate("DELETE FROM il_news_read " . " WHERE news_id = " . $ilDB->quote($this->getId(), "integer"));
     // delete multimedia object
     $mob = $this->getMobId();
     // delete
     parent::delete();
     // delete mob after news, to have a "mob usage" of 0
     if ($mob > 0 and ilObject::_exists($mob)) {
         include_once "./Services/MediaObjects/classes/class.ilObjMediaObject.php";
         $mob = new ilObjMediaObject($mob);
         $mob->delete();
     }
 }

 /**
  * Uploads a new rooms agreement by using the ILIAS MediaObject Service.
  * If the old file id is given, the old file will be deleted.
  *
  * @param array  $a_newfile   an array containing the input values of the form
  * @param string $a_oldFileId to delete trash
  *
  * @return string uploaded file id
  */
 public function uploadRoomsAgreement($a_newfile, $a_oldFileId = "0")
 {
     if (!empty($a_oldFileId) && $a_oldFileId != "0") {
         $agreementFile = new ilObjMediaObject($a_oldFileId);
         $agreementFile->delete();
     }
     $mediaObj = new ilObjMediaObject();
     $mediaObj->setTitle("RoomSharingRoomsAgreement");
     $mediaObj->setDescription("RoomSharingRoomsAgreement");
     $mediaObj->create();
     $mob_dir = ilObjMediaObject::_getDirectory($mediaObj->getId());
     if (!is_dir($mob_dir)) {
         $mediaObj->createDirectory();
     }
     $file_name = ilUtil::getASCIIFilename($a_newfile["name"]);
     $file_name_mod = str_replace(" ", "_", $file_name);
     $file = $mob_dir . "/" . $file_name_mod;
     ilUtil::moveUploadedFile($a_newfile["tmp_name"], $file_name_mod, $file);
     ilUtil::renameExecutables($mob_dir);
     $format = ilObjMediaObject::getMimeType($file);
     $media_item = new ilMediaItem();
     $mediaObj->addMediaItem($media_item);
     $media_item->setPurpose("Standard");
     $media_item->setFormat($format);
     $media_item->setLocation($file_name_mod);
     $media_item->setLocationType("LocalFile");
     $mediaObj->update();
     return $mediaObj->getId();
 }

 /**
  * delete object and all related data
  *
  * this method has been tested on may 9th 2004
  * media pool tree, media objects and folders
  * have been deleted correctly as desired
  *
  * @access	public
  * @return	boolean	true if all object data were removed; false if only a references were removed
  */
 function delete()
 {
     // always call parent delete function first!!
     if (!parent::delete()) {
         return false;
     }
     // get childs
     $childs = $this->tree->getSubTree($this->tree->getNodeData($this->tree->readRootId()));
     // delete tree
     $this->tree->removeTree($this->tree->getTreeId());
     // delete childs
     foreach ($childs as $child) {
         $fid = ilMediaPoolItem::lookupForeignId($child["obj_id"]);
         switch ($child["type"]) {
             case "mob":
                 if (ilObject::_lookupType($fid) == "mob") {
                     include_once "./Services/MediaObjects/classes/class.ilObjMediaObject.php";
                     $mob = new ilObjMediaObject($fid);
                     $mob->delete();
                 }
                 break;
                 /*				case "fold":
                 					if  (ilObject::_lookupType($fid) == "fold")
                 					{
                 						include_once("./Modules/Folder/classes/class.ilObjFolder.php");
                 						$fold = new ilObjFolder($fid, false);
                 						$fold->delete();
                 					}
                 					break;*/
         }
     }
     return true;
 }

 /**
  * Before page is being deleted
  *
  * @param object $a_page page object
  */
 static function beforePageDelete($a_page)
 {
     include_once "./Services/MediaObjects/classes/class.ilObjMediaObject.php";
     $mob_ids = ilObjMediaObject::_getMobsOfObject($a_page->getParentType() . ":pg", $a_page->getId(), 0, $a_page->getLanguage());
     ilObjMediaObject::_deleteAllUsages($a_page->getParentType() . ":pg", $a_page->getId(), false, $a_page->getLanguage());
     foreach ($mob_ids as $mob) {
         if (ilObject::_exists($mob) && ilObject::_lookupType($mob) == "mob") {
             $mob_obj = new ilObjMediaObject($mob);
             $usages = $mob_obj->getUsages(false);
             if (count($usages) == 0) {
                 $mob_obj->delete();
             }
         }
     }
 }

 public function deleteMob($obj_id)
 {
     if (ilObject2::_lookupObjId($obj_id)) {
         $mob = new ilObjMediaObject($obj_id);
         $mob->delete();
     }
 }

 /**
  * remove item from clipboard
  */
 function remove()
 {
     global $ilias, $ilUser, $lng, $ilCtrl;
     // check number of objects
     if (!isset($_POST["id"])) {
         $ilias->raiseError($lng->txt("no_checkbox"), $ilias->error_obj->MESSAGE);
     }
     foreach ($_POST["id"] as $obj_id) {
         $id = explode(":", $obj_id);
         if ($id[0] == "mob") {
             $ilUser->removeObjectFromClipboard($id[1], "mob");
             include_once "./Services/MediaObjects/classes/class.ilObjMediaObject.php";
             $mob = new ilObjMediaObject($id[1]);
             $mob->delete();
             // this method don't delete, if mob is used elsewhere
         }
         if ($id[0] == "incl") {
             $ilUser->removeObjectFromClipboard($id[1], "incl");
         }
     }
     $ilCtrl->redirect($this, "view");
 }

 public function viewThreadObject()
 {
     /**
      * @var $tpl ilTemplate
      * @var $lng ilLanguage
      * @var $ilUser ilObjUser
      * @var $ilAccess ilAccessHandler
      * @var $rbacreview ilRbacReview
      * @var $ilNavigationHistory ilNavigationHistory
      * @var $ilCtrl ilCtrl
      * @var $ilToolbar ilToolbarGUI
      */
     global $tpl, $lng, $ilUser, $ilAccess, $rbacreview, $ilNavigationHistory, $ilCtrl, $frm, $ilToolbar, $ilLocator;
     $tpl->addCss('./Modules/Forum/css/forum_tree.css');
     if (!isset($_SESSION['viewmode'])) {
         $_SESSION['viewmode'] = $this->objProperties->getDefaultView();
     }
     // quick and dirty: check for treeview
     if (!isset($_SESSION['thread_control']['old'])) {
         $_SESSION['thread_control']['old'] = $_GET['thr_pk'];
         $_SESSION['thread_control']['new'] = $_GET['thr_pk'];
     } else {
         if (isset($_SESSION['thread_control']['old']) && $_GET['thr_pk'] != $_SESSION['thread_control']['old']) {
             $_SESSION['thread_control']['new'] = $_GET['thr_pk'];
         }
     }
     if (isset($_GET['viewmode']) && $_GET['viewmode'] != $_SESSION['viewmode']) {
         $_SESSION['viewmode'] = $_GET['viewmode'];
     }
     if (isset($_GET['action']) && $_SESSION['viewmode'] != ilForumProperties::VIEW_DATE || $_SESSION['viewmode'] == ilForumProperties::VIEW_TREE) {
         $_SESSION['viewmode'] = ilForumProperties::VIEW_TREE;
     } else {
         $_SESSION['viewmode'] = ilForumProperties::VIEW_DATE;
     }
     if (!$ilAccess->checkAccess('read', '', $this->object->getRefId())) {
         $this->ilias->raiseError($lng->txt('permission_denied'), $this->ilias->error_obj->MESSAGE);
     }
     // init objects
     $oForumObjects = $this->getForumObjects();
     /**
      * @var $forumObj ilObjForum
      */
     $forumObj = $oForumObjects['forumObj'];
     /**
      * @var $frm ilForum
      */
     $frm = $oForumObjects['frm'];
     /**
      * @var $file_obj ilFileDataForum
      */
     $file_obj = $oForumObjects['file_obj'];
     // download file
     if ($_GET['file']) {
         if (!($path = $file_obj->getFileDataByMD5Filename($_GET['file']))) {
             ilUtil::sendFailure($this->lng->txt('error_reading_file'));
         } else {
             ilUtil::deliverFile($path['path'], $path['clean_filename']);
         }
     }
     if (!$this->objCurrentTopic->getId()) {
         $ilCtrl->redirect($this, 'showThreads');
     }
     // Set context for login
     $append = '_' . $this->objCurrentTopic->getId() . ($this->objCurrentPost->getId() ? '_' . $this->objCurrentPost->getId() : '');
     $tpl->setLoginTargetPar('frm_' . $_GET['ref_id'] . $append);
     // delete temporary media object (not in case a user adds media objects and wants to save an invalid form)
     if ($_GET['action'] != 'showreply' && $_GET['action'] != 'showedit') {
         try {
             include_once 'Services/MediaObjects/classes/class.ilObjMediaObject.php';
             $mobs = ilObjMediaObject::_getMobsOfObject('frm~:html', $ilUser->getId());
             foreach ($mobs as $mob) {
                 if (ilObjMediaObject::_exists($mob)) {
                     ilObjMediaObject::_removeUsage($mob, 'frm~:html', $ilUser->getId());
                     $mob_obj = new ilObjMediaObject($mob);
                     $mob_obj->delete();
                 }
             }
         } catch (Exception $e) {
         }
     }
     require_once './Modules/Forum/classes/class.ilObjForum.php';
     require_once './Modules/Forum/classes/class.ilFileDataForum.php';
     $lng->loadLanguageModule('forum');
     // add entry to navigation history
     if (!$this->getCreationMode() && $ilAccess->checkAccess('read', '', $this->object->getRefId())) {
         $ilCtrl->setParameter($this, 'thr_pk', $this->objCurrentTopic->getId());
         $ilNavigationHistory->addItem($this->object->getRefId(), $ilCtrl->getLinkTarget($this, 'showThreads'), 'frm');
     }
     // save last access
     $forumObj->updateLastAccess($ilUser->getId(), (int) $this->objCurrentTopic->getId());
     $this->prepareThreadScreen($forumObj);
     $tpl->addBlockFile('ADM_CONTENT', 'adm_content', 'tpl.forums_threads_view.html', 'Modules/Forum');
     if (isset($_GET['anchor'])) {
         $tpl->setVariable('JUMP2ANCHOR_ID', (int) $_GET['anchor']);
     }
     if ($_SESSION['viewmode'] == 'date' || $_SESSION['viewmode'] == ilForumProperties::VIEW_DATE) {
         $orderField = 'frm_posts_tree.fpt_date';
         $this->objCurrentTopic->setOrderDirection(in_array($this->objProperties->getDefaultView(), array(ilForumProperties::VIEW_DATE_ASC, ilForumProperties::VIEW_TREE)) ? 'ASC' : 'DESC');
     } else {
         $orderField = 'frm_posts_tree.rgt';
//.........这里部分代码省略.........

 /**
  * Deletes a floor plan by file id.
  *
  * @param type $a_file_id the file id of the floor plan
  *
  * @return the result of the manipulation
  */
 public function deleteFloorPlan($a_file_id)
 {
     if (!$this->permission->checkPrivilege(PRIVC::DELETE_FLOORPLANS)) {
         ilUtil::sendFailure($this->lng->txt("rep_robj_xrs_no_permission_for_action"), true);
         $this->ctrl->redirectByClass('ilinfoscreengui', 'showSummary', 'showSummary');
         return false;
     }
     $res = NULL;
     if ($a_file_id) {
         $mediaObj = new ilObjMediaObject($a_file_id);
         $mediaObj->removeAllMediaItems();
         $mediaObj->delete();
         if ($res = $this->ilRoomsharingDatabase->deleteFloorplan($a_file_id)) {
             $this->ilRoomsharingDatabase->deleteFloorplanRoomAssociation($a_file_id);
         }
     }
     return $res;
 }

//.........这里部分代码省略.........
                     if ($last_c == "") {
                         $last_c = ilUtil::now();
                     }
                     $ilDB->insert("page_history", array("page_id" => array("integer", $old_rec["page_id"]), "parent_type" => array("text", $old_rec["parent_type"]), "hdate" => array("timestamp", $last_c), "parent_id" => array("integer", $old_rec["parent_id"]), "content" => array("clob", $old_rec["content"]), "user_id" => array("integer", $old_rec["last_change_user"]), "ilias_version" => array("text", ILIAS_VERSION_NUMERIC), "nr" => array("integer", (int) $last_nr["mnr"] + 1)));
                     /*$h_query = "REPLACE INTO page_history ".
                     							"(page_id, parent_type, hdate, parent_id, content, user_id, ilias_version, nr) VALUES (".
                     							$ilDB->quote($old_rec["page_id"]).",".
                     							$ilDB->quote($old_rec["parent_type"]).",".
                     							$ilDB->quote($old_rec["last_change"]).",".
                     							$ilDB->quote($old_rec["parent_id"]).",".
                     							$ilDB->quote($old_rec["content"]).",".
                     							$ilDB->quote($old_rec["last_change_user"]).",".
                     							$ilDB->quote(ILIAS_VERSION_NUMERIC).",".
                     							$ilDB->quote($last_nr["mnr"] + 1).")";
                     //echo "<br><br>+$a_no_history+$h_query";
                     						$ilDB->query($h_query);*/
                     $this->saveMobUsage($old_rec["content"], $last_nr["mnr"] + 1);
                     $this->saveStyleUsage($old_rec["content"], $last_nr["mnr"] + 1);
                     $this->saveFileUsage($old_rec["content"], $last_nr["mnr"] + 1);
                     $this->saveContentIncludeUsage($old_rec["content"], $last_nr["mnr"] + 1);
                     $this->saveSkillUsage($old_rec["content"], $last_nr["mnr"] + 1);
                     $this->history_saved = true;
                     // only save one time
                 } else {
                     $this->history_saved = true;
                     // do not save on first change
                 }
             }
         }
         //echo htmlentities($content);
         $em = trim($content) == "<PageObject/>" ? 1 : 0;
         $iel = $this->containsDeactivatedElements($content);
         $inl = $this->containsIntLinks($content);
         /*$query = "UPDATE page_object ".
         		"SET content = ".$ilDB->quote($content)." ".
         		", parent_id= ".$ilDB->quote($this->getParentId())." ".
         		", last_change_user= ".$ilDB->quote($ilUser->getId())." ".
         		", last_change = now() ".
         		", is_empty = ".$ilDB->quote($em, "integer")." ".
         		", active = ".$ilDB->quote($this->getActive())." ".
         		", activation_start = ".$ilDB->quote($this->getActivationStart())." ".
         		", activation_end = ".$ilDB->quote($this->getActivationEnd())." ".
         		", inactive_elements = ".$ilDB->quote($iel, "integer")." ".
         		", int_links = ".$ilDB->quote($inl, "integer")." ".
         		" WHERE page_id = ".$ilDB->quote($this->getId()).
         		" AND parent_type= ".$ilDB->quote($this->getParentType());*/
         $ilDB->update("page_object", array("content" => array("clob", $content), "parent_id" => array("integer", $this->getParentId()), "last_change_user" => array("integer", $ilUser->getId()), "last_change" => array("timestamp", ilUtil::now()), "is_empty" => array("integer", $em), "active" => array("integer", $this->getActive()), "activation_start" => array("timestamp", $this->getActivationStart()), "activation_end" => array("timestamp", $this->getActivationEnd()), "show_activation_info" => array("integer", $this->getShowActivationInfo()), "inactive_elements" => array("integer", $iel), "int_links" => array("integer", $inl)), array("page_id" => array("integer", $this->getId()), "parent_type" => array("text", $this->getParentType())));
         // todo put this into update function
         /*			if(!$this->ilias->db->checkQuerySize($query))
         			{
         				$this->ilias->raiseError($lng->txt("check_max_allowed_packet_size"),$this->ilias->error_obj->MESSAGE);
         				return false;
         			}*/
         //			$this->ilias->db->query($query);
         if (!$skip_handle_usages) {
             // handle media object usage
             include_once "./Services/MediaObjects/classes/class.ilObjMediaObject.php";
             $mob_ids = ilObjMediaObject::_getMobsOfObject($this->getParentType() . ":pg", $this->getId());
             $this->saveMobUsage($this->getXMLFromDom());
             $this->saveMetaKeywords($this->getXMLFromDom());
             foreach ($mob_ids as $mob) {
                 if (ilObject::_exists($mob) && ilObject::_lookupType($mob) == "mob") {
                     $mob_obj = new ilObjMediaObject($mob);
                     $usages = $mob_obj->getUsages(false);
                     if (count($usages) == 0) {
                         $mob_obj->delete();
                     }
                 }
             }
             // handle file usages
             include_once "./Modules/File/classes/class.ilObjFile.php";
             $file_ids = ilObjFile::_getFilesOfObject($this->getParentType() . ":pg", $this->getId());
             $this->saveFileUsage();
             foreach ($file_ids as $file) {
                 if (ilObject::_exists($file)) {
                     $file_obj = new ilObjFile($file, false);
                     $usages = $file_obj->getUsages();
                     if (count($usages) == 0) {
                         if ($file_obj->getMode() == "filelist") {
                             $file_obj->delete();
                         }
                     }
                 }
             }
             // save style usage
             $this->saveStyleUsage($this->getXMLFromDom());
             // save content include usage
             $this->saveContentIncludeUsage($this->getXMLFromDom());
             $this->saveSkillUsage($this->getXMLFromDom());
         }
         // save internal link information
         $this->saveInternalLinks($this->getXMLFromDom());
         $this->saveAnchors($this->getXMLFromDom());
         $this->callUpdateListeners();
         //echo "<br>PageObject::update:".htmlentities($this->getXMLContent()).":";
         return true;
     } else {
         return $errors;
     }
 }

    /**
     * delete post and sub-posts
     * @param	integer	$post: ID	
     * @access	public
     * @return	integer	0 or thread-ID
     */
    public function deletePost($post)
    {
        global $ilDB;
        include_once "./Modules/Forum/classes/class.ilObjForum.php";
        // delete tree and get id's of all posts to delete
        $p_node = $this->getPostNode($post);
        $del_id = $this->deletePostTree($p_node);
        // Delete User read entries
        foreach ($del_id as $post_id) {
            ilObjForum::_deleteReadEntries($post_id);
        }
        // DELETE ATTACHMENTS ASSIGNED TO POST
        $this->__deletePostFiles($del_id);
        $dead_pos = count($del_id);
        $dead_thr = 0;
        // if deletePost is thread opener ...
        if ($p_node["parent"] == 0) {
            // delete thread access data
            include_once './Modules/Forum/classes/class.ilObjForum.php';
            ilObjForum::_deleteAccessEntries($p_node['tree']);
            // delete thread
            $dead_thr = $p_node["tree"];
            $statement = $ilDB->manipulateF('
				DELETE FROM frm_threads
				WHERE thr_pk = %s', array('integer'), array($p_node['tree']));
            // update num_threads
            $statement = $ilDB->manipulateF('
				UPDATE frm_data 
				SET top_num_threads = top_num_threads - 1 
				WHERE top_frm_fk = %s', array('integer'), array($this->id));
            // delete all related news
            $posset = $ilDB->queryf('
				SELECT * FROM frm_posts
				WHERE pos_thr_fk = %s', array('integer'), array($p_node['tree']));
            while ($posrec = $ilDB->fetchAssoc($posset)) {
                include_once "./Services/News/classes/class.ilNewsItem.php";
                $news_id = ilNewsItem::getFirstNewsIdForContext($this->id, "frm", $posrec["pos_pk"], "pos");
                if ($news_id > 0) {
                    $news_item = new ilNewsItem($news_id);
                    $news_item->delete();
                }
                try {
                    include_once 'Services/MediaObjects/classes/class.ilObjMediaObject.php';
                    $mobs = ilObjMediaObject::_getMobsOfObject('frm:html', $posrec['pos_pk']);
                    foreach ($mobs as $mob) {
                        if (ilObjMediaObject::_exists($mob)) {
                            ilObjMediaObject::_removeUsage($mob, 'frm:html', $posrec['pos_pk']);
                            $mob_obj = new ilObjMediaObject($mob);
                            $mob_obj->delete();
                        }
                    }
                } catch (Exception $e) {
                }
            }
            // delete all posts of this thread
            $statement = $ilDB->manipulateF('
				DELETE FROM frm_posts
				WHERE pos_thr_fk = %s', array('integer'), array($p_node['tree']));
        } else {
            // delete this post and its sub-posts
            for ($i = 0; $i < $dead_pos; $i++) {
                $statement = $ilDB->manipulateF('
					DELETE FROM frm_posts
					WHERE pos_pk = %s', array('integer'), array($del_id[$i]));
                // delete related news item
                include_once "./Services/News/classes/class.ilNewsItem.php";
                $news_id = ilNewsItem::getFirstNewsIdForContext($this->id, "frm", $del_id[$i], "pos");
                if ($news_id > 0) {
                    $news_item = new ilNewsItem($news_id);
                    $news_item->delete();
                }
                try {
                    include_once 'Services/MediaObjects/classes/class.ilObjMediaObject.php';
                    $mobs = ilObjMediaObject::_getMobsOfObject('frm:html', $del_id[$i]);
                    foreach ($mobs as $mob) {
                        if (ilObjMediaObject::_exists($mob)) {
                            ilObjMediaObject::_removeUsage($mob, 'frm:html', $del_id[$i]);
                            $mob_obj = new ilObjMediaObject($mob);
                            $mob_obj->delete();
                        }
                    }
                } catch (Exception $e) {
                }
            }
            // update num_posts in frm_threads
            $statement = $ilDB->manipulateF('
				UPDATE frm_threads
				SET thr_num_posts = thr_num_posts - %s
				WHERE thr_pk = %s', array('integer', 'integer'), array($dead_pos, $p_node['tree']));
            // get latest post of thread and update last_post
            $res1 = $ilDB->queryf('
				SELECT * FROM frm_posts 
				WHERE pos_thr_fk = %s
				ORDER BY pos_date DESC', array('integer'), array($p_node['tree']));
//.........这里部分代码省略.........