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							748 lines
						
					
					
						
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							748 lines
						
					
					
						
							32 KiB
						
					
					
				<?php
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/* For licensing terms, see /license.txt */
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require_once 'Course.class.php';
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/**
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 * Class to delete items from a Chamilo-course
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 * @author Bart Mollet <bart.mollet@hogent.be>
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 * @package chamilo.backup
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 */
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class CourseRecycler
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{
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    /**
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     * A course-object with the items to delete
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     */
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    public $course;
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    public $type;
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    /**
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     * Create a new CourseRecycler
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     * @param course $course The course-object which contains the items to
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     * delete
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     */
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    public function __construct($course)
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    {
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        $this->course = $course;
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        $this->course_info = api_get_course_info($this->course->code);
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        $this->course_id = $this->course_info['real_id'];
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    }
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    /**
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     * Delete all items from the course.
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     * This deletes all items in the course-object from the current Chamilo-
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     * course
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     * @param string $type 'full_backup' or 'select_items'
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     *
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     * @return bool
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     *
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     * @assert (null) === false
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     */
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    public function recycle($type)
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    {
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        if (empty($type)) {
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            return false;
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        }
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        $this->type = $type;
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        $table_tool_intro = Database::get_course_table(TABLE_TOOL_INTRO);
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        $table_linked_resources = Database::get_course_table(TABLE_LINKED_RESOURCES);
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        $table_item_properties = Database::get_course_table(TABLE_ITEM_PROPERTY);
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        $this->recycle_links();
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        $this->recycle_link_categories();
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        $this->recycle_events();
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        $this->recycle_announcements();
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        $this->recycle_documents();
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        $this->recycle_forums();
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        $this->recycle_forum_categories();
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        $this->recycle_quizzes();
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        $this->recycle_test_category();
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        $this->recycle_surveys();
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        $this->recycle_learnpaths();
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        $this->recycle_cours_description();
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        $this->recycle_wiki();
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        $this->recycle_glossary();
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        $this->recycle_thematic();
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        $this->recycle_attendance();
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        $this->recycle_work();
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        foreach ($this->course->resources as $type => $resources) {
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            foreach ($resources as $id => $resource) {
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                $sql = "DELETE FROM ".$table_linked_resources."
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                        WHERE
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                            c_id = ".$this->course_id." AND
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                            (source_type = '".$type."' AND source_id = '".$id."') OR
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                            (resource_type = '".$type."' AND resource_id = '".$id."') ";
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                Database::query($sql);
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                if (is_numeric($id)) {
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                    $sql = "DELETE FROM ".$table_item_properties."
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                            WHERE c_id = ".$this->course_id." AND tool ='".$resource->get_tool()."' AND ref=".$id;
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                    Database::query($sql);
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                } elseif ($type == RESOURCE_TOOL_INTRO) {
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                    $sql = "DELETE FROM $table_tool_intro
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                            WHERE c_id = ".$this->course_id." AND id='$id'";
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                    Database::query($sql);
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                }
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            }
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        }
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    }
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    /**
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     * Delete documents
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     */
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    public function recycle_documents()
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    {
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        $table = Database :: get_course_table(TABLE_DOCUMENT);
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        $tableItemProperty = Database :: get_course_table(TABLE_ITEM_PROPERTY);
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        if ($this->type == 'full_backup') {
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            $sql = "DELETE FROM $tableItemProperty
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                        WHERE
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                            c_id = ".$this->course_id." AND
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                            tool = '".TOOL_DOCUMENT."'";
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            Database::query($sql);
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            $sql = "DELETE FROM $table WHERE c_id = ".$this->course_id;
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            Database::query($sql);
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            // Delete all content in the documents.
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            rmdirr($this->course->backup_path.'/document', true);
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        } else {
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            if ($this->course->has_resources(RESOURCE_DOCUMENT)) {
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                foreach ($this->course->resources[RESOURCE_DOCUMENT] as $document) {
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                    rmdirr($this->course->backup_path.'/'.$document->path);
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                }
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                $ids = implode(',', array_filter(array_keys($this->course->resources[RESOURCE_DOCUMENT])));
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                if (!empty($ids)) {
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                    $sql = "DELETE FROM $table
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                            WHERE c_id = ".$this->course_id." AND id IN(".$ids.")";
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                    Database::query($sql);
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                }
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            }
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        }
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    }
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    /**
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     * Delete wiki
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     */
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    public function recycle_wiki()
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    {
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        if ($this->course->has_resources(RESOURCE_WIKI)) {
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            $table_wiki = Database::get_course_table(TABLE_WIKI);
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            $table_wiki_conf = Database::get_course_table(TABLE_WIKI_CONF);
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            $pages = array();
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            foreach ($this->course->resources[RESOURCE_WIKI] as $resource) {
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                $pages[] = $resource->page_id;
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            }
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            $wiki_ids = implode(',', array_filter(array_keys($this->course->resources[RESOURCE_WIKI])));
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            if (!empty($wiki_ids)) {
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                $page_ids = implode(',', $pages);
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                $sql = "DELETE FROM ".$table_wiki."
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                        WHERE c_id = ".$this->course_id." AND id IN(".$wiki_ids.")";
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                Database::query($sql);
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                $sql = "DELETE FROM ".$table_wiki_conf."
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                        WHERE c_id = ".$this->course_id." AND page_id IN(".$page_ids.")";
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                Database::query($sql);
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            }
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        }
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    }
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    /**
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     * Delete glossary
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     */
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    public function recycle_glossary()
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    {
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        if ($this->course->has_resources(RESOURCE_GLOSSARY)) {
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            $table_glossary	= Database::get_course_table(TABLE_GLOSSARY);
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            $ids = implode(',', array_filter(array_keys($this->course->resources[RESOURCE_GLOSSARY])));
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            if (!empty($ids)) {
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                $sql = "DELETE FROM ".$table_glossary."
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                        WHERE c_id = ".$this->course_id." AND glossary_id IN(".$ids.")";
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                Database::query($sql);
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            }
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        }
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    }
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    /**
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     * Delete links
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     */
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    public function recycle_links()
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    {
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        if ($this->course->has_resources(RESOURCE_LINK)) {
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            $table = Database :: get_course_table(TABLE_LINK);
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            $ids = implode(',', array_filter(array_keys($this->course->resources[RESOURCE_LINK])));
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            if (!empty($ids)) {
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                $sql = "DELETE FROM $table
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                        WHERE c_id = ".$this->course_id." AND id IN(".$ids.")";
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                Database::query($sql);
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            }
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        }
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    }
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    /**
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     * Delete forums
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     */
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    public function recycle_forums()
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    {
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        $table_category = Database :: get_course_table(TABLE_FORUM_CATEGORY);
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        $table_forum = Database :: get_course_table(TABLE_FORUM);
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        $table_thread = Database :: get_course_table(TABLE_FORUM_THREAD);
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        $table_post = Database :: get_course_table(TABLE_FORUM_POST);
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        $table_attachment = Database::get_course_table(TABLE_FORUM_ATTACHMENT);
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        $table_notification = Database::get_course_table(TABLE_FORUM_NOTIFICATION);
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        $table_mail_queue = Database::get_course_table(TABLE_FORUM_MAIL_QUEUE);
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        $table_thread_qualify = Database::get_course_table(TABLE_FORUM_THREAD_QUALIFY);
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        $table_thread_qualify_log = Database::get_course_table(TABLE_FORUM_THREAD_QUALIFY_LOG);
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        if ($this->type == 'full_backup') {
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            $sql = "DELETE FROM ".$table_category." WHERE c_id = ".$this->course_id;
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            Database::query($sql);
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            $sql = "DELETE FROM ".$table_forum." WHERE c_id = ".$this->course_id;
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            Database::query($sql);
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            $sql = "DELETE FROM ".$table_thread." WHERE c_id = ".$this->course_id;
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            Database::query($sql);
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            $sql = "DELETE FROM ".$table_post." WHERE c_id = ".$this->course_id;
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            Database::query($sql);
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            $sql = "DELETE FROM ".$table_attachment." WHERE c_id = ".$this->course_id;
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            Database::query($sql);
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            $sql = "DELETE FROM ".$table_notification." WHERE c_id = ".$this->course_id;
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            Database::query($sql);
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            $sql = "DELETE FROM ".$table_mail_queue." WHERE c_id = ".$this->course_id;
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            Database::query($sql);
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            $sql = "DELETE FROM ".$table_thread_qualify." WHERE c_id = ".$this->course_id;
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            Database::query($sql);
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            $sql = "DELETE FROM ".$table_thread_qualify_log." WHERE c_id = ".$this->course_id;
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            Database::query($sql);
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            $sql = "DELETE FROM ".$table_thread_qualify_log." WHERE c_id = ".$this->course_id;
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            Database::query($sql);
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        }
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        if ($this->course->has_resources(RESOURCE_FORUMCATEGORY)) {
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            $forum_ids = implode(',', array_filter(array_keys($this->course->resources[RESOURCE_FORUMCATEGORY])));
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            if (!empty($forum_ids)) {
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                $sql = "DELETE FROM ".$table_category."
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                        WHERE c_id = ".$this->course_id." AND cat_id IN(".$forum_ids.");";
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                Database::query($sql);
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            }
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        }
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        if ($this->course->has_resources(RESOURCE_FORUM)) {
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            $forum_ids = implode(',', array_filter(array_keys($this->course->resources[RESOURCE_FORUM])));
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            if (empty($forum_ids)) {
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                return false;
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            }
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            $sql = "DELETE FROM $table_attachment USING $table_attachment
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                    INNER JOIN $table_post
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                    WHERE   ".$table_post.".c_id = ".$this->course_id." AND
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                            ".$table_attachment.".c_id = ".$this->course_id." AND
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                            ".$table_attachment.".post_id = ".$table_post.".post_id".
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                " AND ".$table_post.".forum_id IN(".$forum_ids.");";
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            Database::query($sql);
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            $sql = "DELETE FROM ".$table_mail_queue." USING ".$table_mail_queue." INNER JOIN $table_post
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                    WHERE
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                        ".$table_post.".c_id = ".$this->course_id." AND
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                        ".$table_mail_queue.".c_id = ".$this->course_id." AND
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                        ".$table_mail_queue.".post_id = ".$table_post.".post_id AND
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                        ".$table_post.".forum_id IN(".$forum_ids.");";
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            Database::query($sql);
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            // Just in case, deleting in the same table using thread_id as record-linker.
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            $sql = "DELETE FROM $table_mail_queue
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                    USING ".$table_mail_queue." INNER JOIN $table_thread
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                    WHERE
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                        $table_mail_queue.c_id = ".$this->course_id." AND
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                        $table_thread.c_id = ".$this->course_id." AND
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                        $table_mail_queue.thread_id = ".$table_thread.".thread_id AND
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                        $table_thread.forum_id IN(".$forum_ids.");";
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            Database::query($sql);
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            $sql = "DELETE FROM $table_thread_qualify
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                    USING $table_thread_qualify INNER JOIN $table_thread
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                    WHERE
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                        $table_thread_qualify.c_id = ".$this->course_id." AND
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                        $table_thread.c_id = ".$this->course_id." AND
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                        $table_thread_qualify.thread_id = $table_thread.thread_id AND
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                        $table_thread.forum_id IN(".$forum_ids.");";
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            Database::query($sql);
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            $sql = "DELETE FROM ".$table_thread_qualify_log.
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                " USING ".$table_thread_qualify_log." INNER JOIN ".$table_thread.
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                " WHERE
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                    $table_thread_qualify_log.c_id = ".$this->course_id." AND
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                    $table_thread.c_id = ".$this->course_id." AND
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                    ".$table_thread_qualify_log.".thread_id = ".$table_thread.".thread_id AND
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                    ".$table_thread.".forum_id IN(".$forum_ids.");";
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            Database::query($sql);
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            $sql = "DELETE FROM ".$table_notification."
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                    WHERE c_id = ".$this->course_id." AND forum_id IN(".$forum_ids.")";
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            Database::query($sql);
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            $sql = "DELETE FROM ".$table_post."
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                    WHERE c_id = ".$this->course_id." AND forum_id IN(".$forum_ids.")";
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            Database::query($sql);
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            $sql = "DELETE FROM ".$table_thread."
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                    WHERE c_id = ".$this->course_id." AND forum_id IN(".$forum_ids.")";
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            Database::query($sql);
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            $sql = "DELETE FROM ".$table_forum."
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                    WHERE c_id = ".$this->course_id." AND forum_id IN(".$forum_ids.")";
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            Database::query($sql);
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        }
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    }
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						|
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    /**
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     * Delete forum-categories
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     * Deletes all forum-categories from current course without forums
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     */
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    public function recycle_forum_categories()
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    {
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        $table_forum = Database :: get_course_table(TABLE_FORUM);
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        $table_forumcat = Database :: get_course_table(TABLE_FORUM_CATEGORY);
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        $sql = "SELECT fc.cat_id FROM ".$table_forumcat." fc
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                LEFT JOIN ".$table_forum." f
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                ON
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                    fc.cat_id=f.forum_category AND
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                    fc.c_id = ".$this->course_id." AND
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                    f.c_id = ".$this->course_id."
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        		WHERE f.forum_id IS NULL";
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        $res = Database::query($sql);
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						|
        while ($obj = Database::fetch_object($res)) {
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            $sql = "DELETE FROM ".$table_forumcat."
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                    WHERE c_id = ".$this->course_id." AND cat_id = ".$obj->cat_id;
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						|
            Database::query($sql);
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    /**
 | 
						|
     * Delete link-categories
 | 
						|
     * Deletes all empty link-categories (=without links) from current course
 | 
						|
     */
 | 
						|
    public function recycle_link_categories()
 | 
						|
    {
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						|
        $link_cat_table = Database :: get_course_table(TABLE_LINK_CATEGORY);
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						|
        $link_table = Database :: get_course_table(TABLE_LINK);
 | 
						|
        $sql = "SELECT lc.id FROM ".$link_cat_table." lc
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						|
                LEFT JOIN ".$link_table." l
 | 
						|
                ON
 | 
						|
                    lc.id=l.category_id AND
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						|
                    lc.c_id = ".$this->course_id." AND
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						|
                    l.c_id = ".$this->course_id."
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						|
        		WHERE l.id IS NULL";
 | 
						|
        $res = Database::query($sql);
 | 
						|
        while ($obj = Database::fetch_object($res)) {
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						|
            $sql = "DELETE FROM ".$link_cat_table."
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						|
                    WHERE c_id = ".$this->course_id." AND id = ".$obj->id;
 | 
						|
            Database::query($sql);
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    /**
 | 
						|
     * Delete events
 | 
						|
     */
 | 
						|
    public function recycle_events()
 | 
						|
    {
 | 
						|
        if ($this->course->has_resources(RESOURCE_EVENT)) {
 | 
						|
            $table = Database :: get_course_table(TABLE_AGENDA);
 | 
						|
            $table_attachment = Database :: get_course_table(TABLE_AGENDA_ATTACHMENT);
 | 
						|
 | 
						|
            $ids = implode(',', array_filter(array_keys($this->course->resources[RESOURCE_EVENT])));
 | 
						|
            if (!empty($ids)) {
 | 
						|
                $sql = "DELETE FROM ".$table."
 | 
						|
                        WHERE c_id = ".$this->course_id." AND id IN(".$ids.")";
 | 
						|
                Database::query($sql);
 | 
						|
 | 
						|
                $sql = "DELETE FROM ".$table_attachment."
 | 
						|
                        WHERE c_id = ".$this->course_id." AND agenda_id IN(".$ids.")";
 | 
						|
                Database::query($sql);
 | 
						|
            }
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    /**
 | 
						|
     * Delete announcements
 | 
						|
     */
 | 
						|
    public function recycle_announcements()
 | 
						|
    {
 | 
						|
        if ($this->course->has_resources(RESOURCE_ANNOUNCEMENT)) {
 | 
						|
            $table = Database :: get_course_table(TABLE_ANNOUNCEMENT);
 | 
						|
            $table_attachment = Database :: get_course_table(TABLE_ANNOUNCEMENT_ATTACHMENT);
 | 
						|
 | 
						|
            $ids = implode(',', array_filter(array_keys($this->course->resources[RESOURCE_ANNOUNCEMENT])));
 | 
						|
            if (!empty($ids)) {
 | 
						|
                $sql = "DELETE FROM ".$table."
 | 
						|
                        WHERE c_id = ".$this->course_id." AND id IN(".$ids.")";
 | 
						|
                Database::query($sql);
 | 
						|
 | 
						|
                $sql = "DELETE FROM ".$table_attachment."
 | 
						|
                        WHERE c_id = ".$this->course_id." AND announcement_id IN(".$ids.")";
 | 
						|
                Database::query($sql);
 | 
						|
            }
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    /**
 | 
						|
     * Recycle quizzes - doesn't remove the questions and their answers,
 | 
						|
     * as they might still be used later
 | 
						|
     */
 | 
						|
    public function recycle_quizzes()
 | 
						|
    {
 | 
						|
        if ($this->course->has_resources(RESOURCE_QUIZ)) {
 | 
						|
 | 
						|
            $table_qui_que = Database :: get_course_table(TABLE_QUIZ_QUESTION);
 | 
						|
            $table_qui_ans = Database :: get_course_table(TABLE_QUIZ_ANSWER);
 | 
						|
            $table_qui = Database :: get_course_table(TABLE_QUIZ_TEST);
 | 
						|
            $table_rel = Database :: get_course_table(TABLE_QUIZ_TEST_QUESTION);
 | 
						|
            $table_qui_que_opt = Database :: get_course_table(TABLE_QUIZ_QUESTION_OPTION);
 | 
						|
            $table_qui_que_cat = Database :: get_course_table(TABLE_QUIZ_QUESTION_CATEGORY);
 | 
						|
            $table_qui_que_rel_cat = Database :: get_course_table(TABLE_QUIZ_QUESTION_REL_CATEGORY);
 | 
						|
 | 
						|
            $ids = array_keys($this->course->resources[RESOURCE_QUIZ]);
 | 
						|
            // If the value "-1" is in the ids of elements (questions) to
 | 
						|
            // be deleted, then consider all orphan questions should be deleted
 | 
						|
            // This value is set in CourseBuilder::quiz_build_questions()
 | 
						|
            $delete_orphan_questions = in_array(-1, $ids);
 | 
						|
            $ids = implode(',', $ids);
 | 
						|
 | 
						|
            if (!empty($ids)) {
 | 
						|
                // Deletion of the tests first. Questions in these tests are
 | 
						|
                //   not deleted and become orphan at this point
 | 
						|
                $sql = "DELETE FROM ".$table_qui."
 | 
						|
                        WHERE c_id = ".$this->course_id." AND id IN(".$ids.")";
 | 
						|
                Database::query($sql);
 | 
						|
                $sql = "DELETE FROM ".$table_rel."
 | 
						|
                        WHERE c_id = ".$this->course_id." AND exercice_id IN(".$ids.")";
 | 
						|
                Database::query($sql);
 | 
						|
            }
 | 
						|
 | 
						|
            // Identifying again and deletion of the orphan questions, if it was desired.
 | 
						|
            if ($delete_orphan_questions) {
 | 
						|
 | 
						|
                $sql = " (
 | 
						|
                        SELECT q.id, ex.c_id FROM $table_qui_que q
 | 
						|
                        INNER JOIN $table_rel r
 | 
						|
                        ON (q.c_id = r.c_id AND q.id = r.question_id)
 | 
						|
                        INNER JOIN $table_qui ex
 | 
						|
                        ON (ex.id = r.exercice_id AND ex.c_id = r.c_id)
 | 
						|
                        WHERE ex.c_id = ".$this->course_id." AND (ex.active = '-1' OR ex.id = '-1')
 | 
						|
                    )
 | 
						|
                    UNION
 | 
						|
                    (
 | 
						|
                        SELECT q.id, r.c_id FROM $table_qui_que q
 | 
						|
                        LEFT OUTER JOIN $table_rel r
 | 
						|
                        ON (q.c_id = r.c_id AND q.id = r.question_id)
 | 
						|
                        WHERE q.c_id = ".$this->course_id." AND r.question_id is null
 | 
						|
                    )
 | 
						|
                    UNION
 | 
						|
                    (
 | 
						|
                        SELECT q.id, r.c_id FROM $table_qui_que q
 | 
						|
                        INNER JOIN $table_rel r
 | 
						|
                        ON (q.c_id = r.c_id AND q.id = r.question_id)
 | 
						|
                        WHERE r.c_id = ".$this->course_id." AND (r.exercice_id = '-1' OR r.exercice_id = '0')
 | 
						|
                    )";
 | 
						|
                $db_result = Database::query($sql);
 | 
						|
                if (Database::num_rows($db_result) > 0) {
 | 
						|
                    $orphan_ids = array();
 | 
						|
                    while ($obj = Database::fetch_object($db_result)) {
 | 
						|
                        $orphan_ids[] = $obj->id;
 | 
						|
                    }
 | 
						|
                    $orphan_ids = implode(',', $orphan_ids);
 | 
						|
                    $sql = "DELETE FROM ".$table_rel."
 | 
						|
                            WHERE c_id = ".$this->course_id." AND question_id IN(".$orphan_ids.")";
 | 
						|
                    Database::query($sql);
 | 
						|
                    $sql = "DELETE FROM ".$table_qui_ans."
 | 
						|
                            WHERE c_id = ".$this->course_id." AND question_id IN(".$orphan_ids.")";
 | 
						|
                    Database::query($sql);
 | 
						|
                    $sql = "DELETE FROM ".$table_qui_que."
 | 
						|
                            WHERE c_id = ".$this->course_id." AND id IN(".$orphan_ids.")";
 | 
						|
                    Database::query($sql);
 | 
						|
                }
 | 
						|
                // Also delete questions categories and options
 | 
						|
                $sql = "DELETE FROM $table_qui_que_rel_cat WHERE c_id = ".$this->course_id;
 | 
						|
                Database::query($sql);
 | 
						|
                $sql = "DELETE FROM $table_qui_que_cat WHERE c_id = ".$this->course_id;
 | 
						|
                Database::query($sql);
 | 
						|
                $sql = "DELETE FROM $table_qui_que_opt WHERE c_id = ".$this->course_id;
 | 
						|
                Database::query($sql);
 | 
						|
            }
 | 
						|
 | 
						|
            // Quizzes previously deleted are, in fact, kept with a status
 | 
						|
            //  (active field) of "-1". Delete those, now.
 | 
						|
            $sql = "DELETE FROM ".$table_qui." WHERE c_id = ".$this->course_id." AND active = -1";
 | 
						|
            Database::query($sql);
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    /**
 | 
						|
     * Recycle tests categories
 | 
						|
     */
 | 
						|
    public function recycle_test_category()
 | 
						|
    {
 | 
						|
        if (isset($this->course->resources[RESOURCE_TEST_CATEGORY])) {
 | 
						|
            foreach ($this->course->resources[RESOURCE_TEST_CATEGORY] as $tab_test_cat) {
 | 
						|
                $obj_cat = new TestCategory($tab_test_cat->source_id);
 | 
						|
                $obj_cat->removeCategory();
 | 
						|
            }
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    /**
 | 
						|
     * Recycle surveys - removes everything
 | 
						|
     */
 | 
						|
    public function recycle_surveys()
 | 
						|
    {
 | 
						|
        if ($this->course->has_resources(RESOURCE_SURVEY)) {
 | 
						|
            $table_survey = Database :: get_course_table(TABLE_SURVEY);
 | 
						|
            $table_survey_q = Database :: get_course_table(TABLE_SURVEY_QUESTION);
 | 
						|
            $table_survey_q_o = Database :: get_course_table(TABLE_SURVEY_QUESTION_OPTION);
 | 
						|
            $table_survey_a = Database :: get_course_Table(TABLE_SURVEY_ANSWER);
 | 
						|
            $table_survey_i = Database :: get_course_table(TABLE_SURVEY_INVITATION);
 | 
						|
            $sql = "DELETE FROM $table_survey_i
 | 
						|
                    WHERE c_id = ".$this->course_id;
 | 
						|
            Database::query($sql);
 | 
						|
 | 
						|
            $ids = implode(',', array_filter(array_keys($this->course->resources[RESOURCE_SURVEY])));
 | 
						|
            if (!empty($ids)) {
 | 
						|
 | 
						|
                $sql = "DELETE FROM $table_survey_a
 | 
						|
                        WHERE c_id = ".$this->course_id."  AND survey_id IN(".$ids.")";
 | 
						|
                Database::query($sql);
 | 
						|
 | 
						|
                $sql = "DELETE FROM $table_survey_q_o
 | 
						|
                        WHERE c_id = ".$this->course_id."  AND survey_id IN(".$ids.")";
 | 
						|
                Database::query($sql);
 | 
						|
 | 
						|
                $sql = "DELETE FROM $table_survey_q
 | 
						|
                        WHERE c_id = ".$this->course_id."  AND survey_id IN(".$ids.")";
 | 
						|
                Database::query($sql);
 | 
						|
 | 
						|
                $sql = "DELETE FROM $table_survey
 | 
						|
                        WHERE c_id = ".$this->course_id."  AND survey_id IN(".$ids.")";
 | 
						|
                Database::query($sql);
 | 
						|
            }
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    /**
 | 
						|
     * Recycle learning paths
 | 
						|
     */
 | 
						|
    public function recycle_learnpaths()
 | 
						|
    {
 | 
						|
        if ($this->course->has_resources(RESOURCE_LEARNPATH)) {
 | 
						|
            $table_main = Database :: get_course_table(TABLE_LP_MAIN);
 | 
						|
            $table_item = Database :: get_course_table(TABLE_LP_ITEM);
 | 
						|
            $table_view = Database :: get_course_table(TABLE_LP_VIEW);
 | 
						|
            $table_iv   = Database :: get_course_table(TABLE_LP_ITEM_VIEW);
 | 
						|
            $table_iv_int = Database::get_course_table(TABLE_LP_IV_INTERACTION);
 | 
						|
            $table_tool = Database::get_course_table(TABLE_TOOL_LIST);
 | 
						|
 | 
						|
            foreach ($this->course->resources[RESOURCE_LEARNPATH] as $id => $learnpath) {
 | 
						|
                // See task #875.
 | 
						|
                if ($learnpath->lp_type == 2) {
 | 
						|
                    // This is a learning path of SCORM type.
 | 
						|
                    // A sanity check for avoiding removal of the parent folder scorm/
 | 
						|
                    if (trim($learnpath->path) != '') {
 | 
						|
                        // when $learnpath->path value is incorrect for some reason.
 | 
						|
                        // The directory trat contains files of the SCORM package is to be deleted.
 | 
						|
                        $scorm_package_dir = realpath($this->course->path . 'scorm/' . $learnpath->path);
 | 
						|
                        rmdirr($scorm_package_dir);
 | 
						|
                    }
 | 
						|
                }
 | 
						|
 | 
						|
                //remove links from course homepage
 | 
						|
                $sql = "DELETE FROM $table_tool
 | 
						|
                        WHERE
 | 
						|
                            c_id = ".$this->course_id." AND
 | 
						|
                            link LIKE '%lp_controller.php%lp_id=$id%' AND
 | 
						|
                            image='scormbuilder.gif'";
 | 
						|
                Database::query($sql);
 | 
						|
                //remove elements from lp_* tables (from bottom-up)
 | 
						|
                // by removing interactions, then item_view, then views and items, then paths
 | 
						|
                $sql_items = "SELECT id FROM $table_item
 | 
						|
                              WHERE c_id = ".$this->course_id."  AND lp_id=$id";
 | 
						|
                $res_items = Database::query($sql_items);
 | 
						|
                while ($row_item = Database::fetch_array($res_items)) {
 | 
						|
                    //get item views
 | 
						|
                    $sql_iv = "SELECT id FROM $table_iv
 | 
						|
                               WHERE  c_id = ".$this->course_id."  AND lp_item_id=".$row_item['id'];
 | 
						|
                    $res_iv = Database::query($sql_iv);
 | 
						|
                    while ($row_iv = Database::fetch_array($res_iv)) {
 | 
						|
                        //delete interactions
 | 
						|
                        $sql_iv_int_del = "DELETE FROM $table_iv_int
 | 
						|
                                           WHERE c_id = ".$this->course_id."  AND lp_iv_id = ".$row_iv['id'];
 | 
						|
                        Database::query($sql_iv_int_del);
 | 
						|
                    }
 | 
						|
                    //delete item views
 | 
						|
                    $sql_iv_del = "DELETE FROM $table_iv
 | 
						|
                                   WHERE c_id = ".$this->course_id."  AND lp_item_id=".$row_item['id'];
 | 
						|
                    Database::query($sql_iv_del);
 | 
						|
                }
 | 
						|
                //delete items
 | 
						|
                $sql_items_del = "DELETE FROM $table_item WHERE c_id = ".$this->course_id."  AND lp_id=$id";
 | 
						|
                Database::query($sql_items_del);
 | 
						|
                //delete views
 | 
						|
                $sql_views_del = "DELETE FROM $table_view WHERE c_id = ".$this->course_id."  AND lp_id=$id";
 | 
						|
                Database::query($sql_views_del);
 | 
						|
                //delete lps
 | 
						|
                $sql_del = "DELETE FROM $table_main WHERE c_id = ".$this->course_id."  AND id = $id";
 | 
						|
                Database::query($sql_del);
 | 
						|
            }
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    /**
 | 
						|
     * Delete course description
 | 
						|
     */
 | 
						|
    public function recycle_cours_description()
 | 
						|
    {
 | 
						|
        if ($this->course->has_resources(RESOURCE_COURSEDESCRIPTION)) {
 | 
						|
            $table = Database :: get_course_table(TABLE_COURSE_DESCRIPTION);
 | 
						|
            $ids = implode(',', array_filter(array_keys($this->course->resources[RESOURCE_COURSEDESCRIPTION])));
 | 
						|
            if (!empty($ids)) {
 | 
						|
                $sql = "DELETE FROM $table
 | 
						|
                        WHERE  c_id = ".$this->course_id."  AND id IN(".$ids.")";
 | 
						|
                Database::query($sql);
 | 
						|
            }
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    /**
 | 
						|
    * Recycle Thematics
 | 
						|
    */
 | 
						|
    public function recycle_thematic($session_id = 0)
 | 
						|
    {
 | 
						|
        if ($this->course->has_resources(RESOURCE_THEMATIC)) {
 | 
						|
            $table_thematic = Database :: get_course_table(TABLE_THEMATIC);
 | 
						|
            $table_thematic_advance = Database :: get_course_table(TABLE_THEMATIC_ADVANCE);
 | 
						|
            $table_thematic_plan = Database :: get_course_table(TABLE_THEMATIC_PLAN);
 | 
						|
 | 
						|
            $resources = $this->course->resources;
 | 
						|
            foreach ($resources[RESOURCE_THEMATIC] as $last_id => $thematic) {
 | 
						|
                if (is_numeric($last_id)) {
 | 
						|
 | 
						|
                    foreach($thematic->thematic_advance_list as $thematic_advance) {
 | 
						|
                        $cond = array(
 | 
						|
                            'id = ? AND  c_id = ?' => array(
 | 
						|
                                $thematic_advance['id'],
 | 
						|
                                $this->course_id,
 | 
						|
                            ),
 | 
						|
                        );
 | 
						|
                        api_item_property_update(
 | 
						|
                            $this->course_info,
 | 
						|
                            'thematic_advance',
 | 
						|
                            $thematic_advance['id'],
 | 
						|
                            'ThematicAdvanceDeleted',
 | 
						|
                            api_get_user_id()
 | 
						|
                        );
 | 
						|
                        Database::delete($table_thematic_advance, $cond);
 | 
						|
                    }
 | 
						|
 | 
						|
                    foreach($thematic->thematic_plan_list as $thematic_plan) {
 | 
						|
                        $cond = array(
 | 
						|
                            'id = ? AND  c_id = ?' => array(
 | 
						|
                                $thematic_plan['id'],
 | 
						|
                                $this->course_id,
 | 
						|
                            ),
 | 
						|
                        );
 | 
						|
                        api_item_property_update(
 | 
						|
                            $this->course_info,
 | 
						|
                            'thematic_plan',
 | 
						|
                            $thematic_advance['id'],
 | 
						|
                            'ThematicPlanDeleted',
 | 
						|
                            api_get_user_id()
 | 
						|
                        );
 | 
						|
                        Database::delete($table_thematic_plan, $cond);
 | 
						|
                    }
 | 
						|
                    $cond = array(
 | 
						|
                        'id = ? AND  c_id = ?' => array(
 | 
						|
                            $last_id,
 | 
						|
                            $this->course_id,
 | 
						|
                        ),
 | 
						|
                    );
 | 
						|
                    api_item_property_update(
 | 
						|
                        $this->course_info,
 | 
						|
                        'thematic',
 | 
						|
                        $last_id,
 | 
						|
                        'ThematicDeleted',
 | 
						|
                        api_get_user_id()
 | 
						|
                    );
 | 
						|
                    Database::delete($table_thematic,$cond);
 | 
						|
                }
 | 
						|
            }
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    /**
 | 
						|
    * Recycle Attendances
 | 
						|
    */
 | 
						|
    public function recycle_attendance($session_id = 0)
 | 
						|
    {
 | 
						|
        if ($this->course->has_resources(RESOURCE_ATTENDANCE)) {
 | 
						|
            $table_attendance = Database :: get_course_table(TABLE_ATTENDANCE);
 | 
						|
            $table_attendance_calendar = Database :: get_course_table(TABLE_ATTENDANCE_CALENDAR);
 | 
						|
 | 
						|
            $resources = $this->course->resources;
 | 
						|
            foreach ($resources[RESOURCE_ATTENDANCE] as $last_id => $obj) {
 | 
						|
                if (is_numeric($last_id)) {
 | 
						|
                    foreach($obj->attendance_calendar as $attendance_calendar) {
 | 
						|
                        $cond = array('id = ? AND c_id = ? '=>array($attendance_calendar['id'], $this->course_id));
 | 
						|
                        Database::delete($table_attendance_calendar, $cond);
 | 
						|
                    }
 | 
						|
                    $cond = array('id = ? AND c_id = ?'=>array($last_id, $this->course_id));
 | 
						|
                    Database::delete($table_attendance, $cond);
 | 
						|
                    api_item_property_update(
 | 
						|
                        $this->course_info,
 | 
						|
                        TOOL_ATTENDANCE,
 | 
						|
                        $last_id,
 | 
						|
                        'AttendanceDeleted',
 | 
						|
                        api_get_user_id()
 | 
						|
                    );
 | 
						|
                }
 | 
						|
            }
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    /**
 | 
						|
     * Recycle Works
 | 
						|
     */
 | 
						|
    public function recycle_work($session_id = 0)
 | 
						|
    {
 | 
						|
        if ($this->course->has_resources(RESOURCE_WORK)) {
 | 
						|
            $table_work          = Database :: get_course_table(TABLE_STUDENT_PUBLICATION);
 | 
						|
            $table_work_assignment = Database :: get_course_table(TABLE_STUDENT_PUBLICATION_ASSIGNMENT);
 | 
						|
 | 
						|
            $resources = $this->course->resources;
 | 
						|
            foreach ($resources[RESOURCE_WORK] as $last_id => $obj) {
 | 
						|
                if (is_numeric($last_id)) {
 | 
						|
                    $cond = array('publication_id = ? AND c_id = ? '=>array($last_id, $this->course_id));
 | 
						|
                    Database::delete($table_work_assignment, $cond);
 | 
						|
                    // The following also deletes student tasks
 | 
						|
                    $cond = array('parent_id = ? AND c_id = ?'=>array($last_id, $this->course_id));
 | 
						|
                    Database::delete($table_work, $cond);
 | 
						|
                    // Finally, delete the main task registry
 | 
						|
                    $cond = array('id = ? AND c_id = ?'=>array($last_id, $this->course_id));
 | 
						|
                    Database::delete($table_work, $cond);
 | 
						|
                    api_item_property_update(
 | 
						|
                        $this->course_info,
 | 
						|
                        TOOL_STUDENTPUBLICATION,
 | 
						|
                        $last_id,
 | 
						|
                        'StudentPublicationDeleted',
 | 
						|
                        api_get_user_id()
 | 
						|
                    );
 | 
						|
                }
 | 
						|
            }
 | 
						|
        }
 | 
						|
    }
 | 
						|
}
 | 
						|
 |