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852 lines
32 KiB
852 lines
32 KiB
<?php // $Id: database.lib.php 22265 2009-07-20 23:26:43Z juliomontoya $
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/* See license terms in /dokeos_license.txt */
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/**
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==============================================================================
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* This is the main database library for Dokeos.
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* Include/require it in your code to use its functionality.
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* Because this library contains all the basic database calls, it could be
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* replaced by another library for say, PostgreSQL, to actually use Dokeos
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* with another database (this is not ready yet because a lot of code still
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* uses the MySQL database functions extensively).
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*
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* @package dokeos.library
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* @todo the table constants have all to start with TABLE_
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* This is because of the analogy with the tool constants TOOL_
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==============================================================================
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*/
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// TODO: It seems more natural if the function api_store_result() in
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// the main API had an implementation here as Database::store_result()
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/*
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==============================================================================
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CONSTANTS
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==============================================================================
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*/
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// Main database tables
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define('TABLE_MAIN_COURSE', 'course');
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define('TABLE_MAIN_USER', 'user');
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define('TABLE_MAIN_CLASS', 'class');
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define('TABLE_MAIN_ADMIN', 'admin');
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define('TABLE_MAIN_COURSE_CLASS', 'course_rel_class');
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define('TABLE_MAIN_COURSE_USER', 'course_rel_user');
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define('TABLE_MAIN_CLASS_USER', 'class_user');
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define('TABLE_MAIN_CATEGORY', 'course_category');
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define('TABLE_MAIN_COURSE_MODULE', 'course_module');
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define('TABLE_MAIN_SYSTEM_ANNOUNCEMENTS', 'sys_announcement');
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define('TABLE_MAIN_LANGUAGE', 'language');
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define('TABLE_MAIN_SETTINGS_OPTIONS', 'settings_options');
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define('TABLE_MAIN_SETTINGS_CURRENT', 'settings_current');
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define('TABLE_MAIN_SESSION', 'session');
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define('TABLE_MAIN_SESSION_COURSE', 'session_rel_course');
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define('TABLE_MAIN_SESSION_USER', 'session_rel_user');
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define('TABLE_MAIN_SESSION_CLASS', 'session_rel_class');
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define('TABLE_MAIN_SESSION_COURSE_USER', 'session_rel_course_rel_user');
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define('TABLE_MAIN_SHARED_SURVEY', 'shared_survey');
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define('TABLE_MAIN_SHARED_SURVEY_QUESTION', 'shared_survey_question');
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define('TABLE_MAIN_SHARED_SURVEY_QUESTION_OPTION', 'shared_survey_question_option');
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define('TABLE_MAIN_TEMPLATES', 'templates');
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define('TABLE_MAIN_SYSTEM_TEMPLATE', 'system_template');
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define('TABLE_MAIN_OPENID_ASSOCIATION', 'openid_association');
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// Gradebook
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define('TABLE_MAIN_GRADEBOOK_CATEGORY', 'gradebook_category');
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define('TABLE_MAIN_GRADEBOOK_EVALUATION', 'gradebook_evaluation');
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define('TABLE_MAIN_GRADEBOOK_LINKEVAL_LOG', 'gradebook_linkeval_log');
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define('TABLE_MAIN_GRADEBOOK_RESULT', 'gradebook_result');
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define('TABLE_MAIN_GRADEBOOK_RESULT_LOG', 'gradebook_result_log');
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define('TABLE_MAIN_GRADEBOOK_LINK', 'gradebook_link');
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define('TABLE_MAIN_GRADEBOOK_SCORE_DISPLAY','gradebook_score_display');
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// Profiling
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define('TABLE_MAIN_USER_FIELD', 'user_field');
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define('TABLE_MAIN_USER_FIELD_OPTIONS', 'user_field_options');
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define('TABLE_MAIN_USER_FIELD_VALUES', 'user_field_values');
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// Search engine
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define('TABLE_MAIN_SPECIFIC_FIELD', 'specific_field');
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define('TABLE_MAIN_SPECIFIC_FIELD_VALUES', 'specific_field_values');
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define('TABLE_MAIN_SEARCH_ENGINE_REF', 'search_engine_ref');
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// Access URLs
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define('TABLE_MAIN_ACCESS_URL', 'access_url');
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define('TABLE_MAIN_ACCESS_URL_REL_USER', 'access_url_rel_user');
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define('TABLE_MAIN_ACCESS_URL_REL_COURSE', 'access_url_rel_course');
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define('TABLE_MAIN_ACCESS_URL_REL_SESSION', 'access_url_rel_session');
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// Global calendar
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define('TABLE_MAIN_SYSTEM_CALENDAR', 'sys_calendar');
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// Reservation System
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define('TABLE_MAIN_RESERVATION_ITEM', 'reservation_item');
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define('TABLE_MAIN_RESERVATION_RESERVATION', 'reservation_main');
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define('TABLE_MAIN_RESERVATION_SUBSCRIBTION', 'reservation_subscription');
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define('TABLE_MAIN_RESERVATION_CATEGORY', 'reservation_category');
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define('TABLE_MAIN_RESERVATION_ITEM_RIGHTS', 'reservation_item_rights');
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// Social networking
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define('TABLE_MAIN_USER_FRIEND', 'user_friend');
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define('TABLE_MAIN_USER_FRIEND_RELATION_TYPE', 'user_friend_relation_type');
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// Web services
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define('TABLE_MAIN_USER_API_KEY', 'user_api_key');
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define('TABLE_MAIN_COURSE_FIELD', 'course_field');
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define('TABLE_MAIN_COURSE_FIELD_VALUES', 'course_field_values');
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define('TABLE_MAIN_SESSION_FIELD', 'session_field');
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define('TABLE_MAIN_SESSION_FIELD_VALUES', 'session_field_values');
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// Message
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define('TABLE_MAIN_MESSAGE', 'message');
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// Term and conditions
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define('TABLE_MAIN_LEGAL', 'legal');
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// Statistic database tables
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define('TABLE_STATISTIC_TRACK_E_LASTACCESS', 'track_e_lastaccess');
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define('TABLE_STATISTIC_TRACK_E_ACCESS', 'track_e_access');
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define('TABLE_STATISTIC_TRACK_E_LOGIN', 'track_e_login');
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define('TABLE_STATISTIC_TRACK_E_DOWNLOADS', 'track_e_downloads');
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define('TABLE_STATISTIC_TRACK_E_LINKS', 'track_e_links');
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define('TABLE_STATISTIC_TRACK_E_ONLINE', 'track_e_online');
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define('TABLE_STATISTIC_TRACK_E_HOTPOTATOES', 'track_e_hotpotatoes');
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define('TABLE_STATISTIC_TRACK_E_COURSE_ACCESS', 'track_e_course_access');
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define('TABLE_STATISTIC_TRACK_E_EXERCICES', 'track_e_exercices');
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define('TABLE_STATISTIC_TRACK_E_ATTEMPT', 'track_e_attempt');
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define('TABLE_STATISTIC_TRACK_E_ATTEMPT_RECORDING', 'track_e_attempt_recording');
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define('TABLE_STATISTIC_TRACK_E_DEFAULT', 'track_e_default');
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define('TABLE_STATISTIC_TRACK_E_UPLOADS', 'track_e_uploads');
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define('TABLE_STATISTIC_TRACK_E_HOTSPOT', 'track_e_hotspot');
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// SCORM database tables
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define('TABLE_SCORM_MAIN', 'scorm_main');
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define('TABLE_SCORM_SCO_DATA', 'scorm_sco_data');
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// Course tables
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define('TABLE_AGENDA', 'calendar_event');
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define('TABLE_AGENDA_REPEAT', 'calendar_event_repeat');
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define('TABLE_AGENDA_REPEAT_NOT', 'calendar_event_repeat_not');
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define('TABLE_AGENDA_ATTACHMENT', 'calendar_event_attachment');
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define('TABLE_ANNOUNCEMENT', 'announcement');
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define('TABLE_CHAT_CONNECTED', 'chat_connected'); // @todo: probably no longer in use !!!
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define('TABLE_COURSE_DESCRIPTION', 'course_description');
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define('TABLE_DOCUMENT', 'document');
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define('TABLE_ITEM_PROPERTY', 'item_property');
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define('TABLE_LINK', 'link');
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define('TABLE_LINK_CATEGORY', 'link_category');
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define('TABLE_TOOL_LIST', 'tool');
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define('TABLE_TOOL_INTRO', 'tool_intro');
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define('TABLE_SCORMDOC', 'scormdocument');
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define('TABLE_STUDENT_PUBLICATION', 'student_publication');
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define('TABLE_STUDENT_PUBLICATION_ASSIGNMENT', 'student_publication_assignment');
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define('CHAT_CONNECTED_TABLE', 'chat_connected');
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// Course forum tables
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define('TABLE_FORUM_CATEGORY', 'forum_category');
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define('TABLE_FORUM', 'forum_forum');
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define('TABLE_FORUM_THREAD', 'forum_thread');
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define('TABLE_FORUM_POST', 'forum_post');
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define('TABLE_FORUM_ATTACHMENT', 'forum_attachment');
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define('TABLE_FORUM_MAIL_QUEUE', 'forum_mailcue');
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define('TABLE_FORUM_THREAD_QUALIFY', 'forum_thread_qualify');
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define('TABLE_FORUM_THREAD_QUALIFY_LOG', 'forum_thread_qualify_log');
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define('TABLE_FORUM_NOTIFICATION', 'forum_notification');
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// Course group tables
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define('TABLE_GROUP', 'group_info');
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define('TABLE_GROUP_USER', 'group_rel_user');
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define('TABLE_GROUP_TUTOR', 'group_rel_tutor');
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define('TABLE_GROUP_CATEGORY', 'group_category');
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// Course dropbox tables
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define('TABLE_DROPBOX_CATEGORY', 'dropbox_category');
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define('TABLE_DROPBOX_FEEDBACK', 'dropbox_feedback');
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define('TABLE_DROPBOX_POST', 'dropbox_post');
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define('TABLE_DROPBOX_FILE', 'dropbox_file');
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define('TABLE_DROPBOX_PERSON', 'dropbox_person');
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// Course quiz (or test, or exercice) tables
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define('TABLE_QUIZ_QUESTION', 'quiz_question');
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define('TABLE_QUIZ_TEST', 'quiz');
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define('TABLE_QUIZ_ANSWER', 'quiz_answer');
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define('TABLE_QUIZ_TEST_QUESTION', 'quiz_rel_question');
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// Linked resource table
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define('TABLE_LINKED_RESOURCES', 'resource');
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// New SCORM tables
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define('TABLE_LP_MAIN', 'lp');
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define('TABLE_LP_ITEM', 'lp_item');
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define('TABLE_LP_VIEW', 'lp_view');
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define('TABLE_LP_ITEM_VIEW', 'lp_item_view');
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define('TABLE_LP_IV_INTERACTION', 'lp_iv_interaction'); // IV = Item View
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define('TABLE_LP_IV_OBJECTIVE', 'lp_iv_objective'); // IV = Item View
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// Smartblogs (Kevin Van Den Haute::kevin@develop-it.be)
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// Permission tables
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define('TABLE_PERMISSION_USER', 'permission_user');
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define('TABLE_PERMISSION_TASK', 'permission_task');
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define('TABLE_PERMISSION_GROUP', 'permission_group');
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// Role tables
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define('TABLE_ROLE', 'role');
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define('TABLE_ROLE_PERMISSION', 'role_permissions');
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define('TABLE_ROLE_USER', 'role_user');
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define('TABLE_ROLE_GROUP', 'role_group');
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// Blog tables
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define('TABLE_BLOGS', 'blog');
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define('TABLE_BLOGS_POSTS', 'blog_post');
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define('TABLE_BLOGS_COMMENTS', 'blog_comment');
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define('TABLE_BLOGS_REL_USER', 'blog_rel_user');
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define('TABLE_BLOGS_TASKS', 'blog_task');
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define('TABLE_BLOGS_TASKS_REL_USER', 'blog_task_rel_user');
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define('TABLE_BLOGS_RATING', 'blog_rating');
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define('TABLE_BLOGS_ATTACHMENT', 'blog_attachment');
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define('TABLE_BLOGS_TASKS_PERMISSIONS', 'permission_task');
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//end of Smartblogs
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// User information tables
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define('TABLE_USER_INFO', 'userinfo_def');
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define('TABLE_USER_INFO_CONTENT', 'userinfo_content');
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// Course settings table
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define('TABLE_COURSE_SETTING', 'course_setting');
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// Course online tables
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define('TABLE_ONLINE_LINK', 'online_link');
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define('TABLE_ONLINE_CONNECTED', 'online_connected');
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// Dokeos_user database
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define('TABLE_PERSONAL_AGENDA', 'personal_agenda');
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define('TABLE_PERSONAL_AGENDA_REPEAT', 'personal_agenda_repeat');
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define('TABLE_PERSONAL_AGENDA_REPEAT_NOT', 'personal_agenda_repeat_not');
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define('TABLE_USER_COURSE_CATEGORY', 'user_course_category');
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// Survey
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// @TODO: Are these MAIN tables or course tables?
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// @TODO: Probably these constants are obsolete.
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define('TABLE_MAIN_SURVEY', 'survey');
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define('TABLE_MAIN_GROUP', 'survey_group');
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define('TABLE_MAIN_SURVEYQUESTION', 'questions');
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// Survey
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define('TABLE_SURVEY', 'survey');
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define('TABLE_SURVEY_QUESTION', 'survey_question');
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define('TABLE_SURVEY_QUESTION_OPTION', 'survey_question_option');
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define('TABLE_SURVEY_INVITATION', 'survey_invitation');
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define('TABLE_SURVEY_ANSWER', 'survey_answer');
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define('TABLE_SURVEY_QUESTION_GROUP', 'survey_group');
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define('TABLE_SURVEY_REPORT', 'survey_report');
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// Wiki tables
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define('TABLE_WIKI', 'wiki');
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define('TABLE_WIKI_CONF', 'wiki_conf');
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define('TABLE_WIKI_DISCUSS', 'wiki_discuss');
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define('TABLE_WIKI_MAILCUE', 'wiki_mailcue');
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// Glossary
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define('TABLE_GLOSSARY', 'glossary');
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// Notebook
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define('TABLE_NOTEBOOK', 'notebook');
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// Message
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define('TABLE_MESSAGE', 'message');
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// Metadata
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define('TABLE_METADATA', 'metadata');
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/*
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==============================================================================
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DATABASE CLASS
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the class and its functions
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==============================================================================
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*/
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/**
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* @package dokeos.library
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*/
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class Database {
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/*
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-----------------------------------------------------------------------------
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Accessor Functions
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Usually, you won't need these directly but instead
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rely on of the get_xxx_table functions.
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-----------------------------------------------------------------------------
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*/
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/**
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* Returns the name of the main Dokeos database.
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*/
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public static function get_main_database () {
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global $_configuration;
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return $_configuration['main_database'];
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}
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/**
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* Returns the name of the Dokeos statistics database.
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*/
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public static function get_statistic_database () {
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global $_configuration;
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return $_configuration['statistics_database'];
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}
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/**
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* Returns the name of the Dokeos SCORM database.
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* @deprecated
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*/
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public static function get_scorm_database () {
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global $_configuration;
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return $_configuration['scorm_database'];
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}
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/**
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* Returns the name of the database where all the personal stuff of the user is stored
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*/
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public static function get_user_personal_database () {
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global $_configuration;
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return $_configuration['user_personal_database'];
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}
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/**
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* Returns the name of the main Dokeos database.
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*/
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public static function get_current_course_database () {
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$course_info = api_get_course_info();
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return $course_info["dbName"];
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}
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/**
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* Returns the glued name of the current course database.
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*/
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public static function get_current_course_glued_database () {
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$course_info = api_get_course_info();
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return $course_info["dbNameGlu"];
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}
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/**
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* The glue is the string needed between database and table.
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* The trick is: in multiple databases, this is a period (with backticks)
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* In single database, this can be e.g. an underscore so we just fake
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* there are multiple databases and the code can be written independent
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* of the single / multiple database setting.
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*/
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public static function get_database_glue () {
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global $_configuration;
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return $_configuration['db_glue'];
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}
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/**
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* Returns the database prefix.
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* All created COURSE databases are prefixed with this string.
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*
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* TIP: this can be convenient e.g. if you have multiple Dokeos installations
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* on the same physical server.
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*/
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public static function get_database_name_prefix () {
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global $_configuration;
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return $_configuration['db_prefix'];
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}
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/**
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* Returns the course table prefix for single database.
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* Not certain exactly when this is used.
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* Do research.
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* It's used in local.inc.php.
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*/
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public static function get_course_table_prefix () {
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global $_configuration;
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return $_configuration['table_prefix'];
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}
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/*
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-----------------------------------------------------------------------------
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Table Name functions
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use these functions to get a table name for queries,
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instead of constructing them yourself.
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Backticks automatically surround the result,
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e.g. `COURSE_NAME`.`link`
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so the queries can look cleaner.
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Example:
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$table = Database::get_course_table(TABLE_DOCUMENT);
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$sql_query = "SELECT * FROM $table WHERE $condition";
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$sql_result = api_sql_query($sql_query,__FILE__,__LINE__);
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$result = mysql_fetch_array($sql_result);
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-----------------------------------------------------------------------------
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*/
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/**
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* A more generic function than the other get_main_xxx_table functions,
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* this one can return the correct complete name of any table of the main database of which you pass
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* the short name as a parameter.
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* Please define table names as constants in this library and use them
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* instead of directly using magic words in your tool code.
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*
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* @param string $short_table_name, the name of the table
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*/
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public static function get_main_table ($short_table_name) {
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$database = Database::get_main_database();
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return Database::format_table_name($database, $short_table_name);
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}
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/**
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* A more generic function than the older get_course_xxx_table functions,
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* this one can return the correct complete name of any course table of which you pass
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* the short name as a parameter.
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* Please define table names as constants in this library and use them
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* instead of directly using magic words in your tool code.
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*
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* @param string $short_table_name, the name of the table
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* @param string $database_name, optional, name of the course database
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* - if you don't specify this, you work on the current course.
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*/
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public static function get_course_table ($short_table_name, $database_name = '') {
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$database_name_with_glue = Database::fix_database_parameter($database_name);
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return Database::format_glued_course_table_name($database_name_with_glue, $short_table_name);
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}
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/**
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* Get a complete course table name from a course code
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*
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* @param string $course_code
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* @param string $table the name of the table
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*/
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public static function get_course_table_from_code ($course_code, $table) {
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$ret = NULL;
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$course_table = Database::get_main_table(TABLE_MAIN_COURSE);
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$course_cat_table = Database::get_main_table(TABLE_MAIN_CATEGORY);
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$sql = "SELECT $course_table.db_name, $course_cat_table.code
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FROM $course_table
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LEFT JOIN $course_cat_table
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ON $course_table.category_code = $course_cat_table.code
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WHERE $course_table.code = '$course_code'
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LIMIT 1";
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$res = api_sql_query($sql, __FILE__, __LINE__);
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$result = Database::fetch_array($res);
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$ret = sprintf ("%s.%s", $result[0], $table);
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return $ret;
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}
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/**
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* This generic function returns the correct and complete name of any statistic table
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* of which you pass the short name as a parameter.
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* Please define table names as constants in this library and use them
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* instead of directly using magic words in your tool code.
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*
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* @param string $short_table_name, the name of the table
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*/
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public static function get_statistic_table ($short_table_name) {
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$database = Database::get_statistic_database();
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return Database::format_table_name($database, $short_table_name);
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}
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/**
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* This generic function returns the correct and complete name of any scorm
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* table of which you pass the short name as a parameter. Please define
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* table names as constants in this library and use them instead of directly
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* using magic words in your tool code.
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*
|
|
* @param string $short_table_name, the name of the table
|
|
*/
|
|
public static function get_scorm_table ($short_table_name) {
|
|
$database = Database::get_scorm_database();
|
|
return Database::format_table_name($database, $short_table_name);
|
|
}
|
|
/**
|
|
* This generic function returns the correct and complete name of any scorm
|
|
* table of which you pass the short name as a parameter. Please define
|
|
* table names as constants in this library and use them instead of directly
|
|
* using magic words in your tool code.
|
|
*
|
|
* @param string $short_table_name, the name of the table
|
|
*/
|
|
public static function get_user_personal_table($short_table_name) {
|
|
$database = Database::get_user_personal_database();
|
|
return Database::format_table_name($database, $short_table_name);
|
|
}
|
|
/**
|
|
* Returns the isocode corresponding to the language directory given.
|
|
* @param string $language This is the name of the folder containing translations for the corresponding language (e.g arabic, english).
|
|
* If $language is omitted, interface language is assumed then.
|
|
* @return string The found isocode or null on error..
|
|
* Returned codes are according to the following standards (in order of preference):
|
|
* - ISO 639-1 : Alpha-2 code (two-letters code - en, fr, es, ...)
|
|
* - RFC 4646 : five-letter code based on the ISO 639 two-letter language codes
|
|
* and the ISO 3166 two-letter territory codes (pt-BR, ...)
|
|
* - ISO 639-2 : Alpha-3 code (three-letters code - ast, fur, ...)
|
|
*/
|
|
public static function get_language_isocode ($language) {
|
|
static $iso_code = array();
|
|
if (empty($language)) {
|
|
$language = api_get_interface_language();
|
|
}
|
|
if (!isset($iso_code[$language])) {
|
|
$table = Database::get_main_table(TABLE_MAIN_LANGUAGE);
|
|
$sql_query = "SELECT isocode FROM $table WHERE dokeos_folder = '$language'";
|
|
$sql_result = api_sql_query($sql_query, __FILE__, __LINE__);
|
|
if (Database::num_rows($sql_result)) {
|
|
$result = Database::fetch_array($sql_result);
|
|
$iso_code[$language] = $result['isocode'];
|
|
} else {
|
|
$iso_code[$language] = null;
|
|
}
|
|
}
|
|
return $iso_code[$language];
|
|
}
|
|
|
|
/*
|
|
-----------------------------------------------------------------------------
|
|
Query Functions
|
|
these execute a query and return the result(s).
|
|
-----------------------------------------------------------------------------
|
|
*/
|
|
|
|
/**
|
|
* @return a list (array) of all courses.
|
|
* @todo shouldn't this be in the course.lib.php script?
|
|
*/
|
|
public static function get_course_list() {
|
|
$table = Database::get_main_table(TABLE_MAIN_COURSE);
|
|
$sql_query = "SELECT * FROM $table";
|
|
$sql_result = api_sql_query($sql_query, __FILE__, __LINE__);
|
|
$result = api_store_result($sql_result);
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Returns an array with all database fields for the specified course.
|
|
*
|
|
* @param the real (system) code of the course (ID from inside the main course table)
|
|
* @todo shouldn't this be in the course.lib.php script?
|
|
*/
|
|
public static function get_course_info ($course_code) {
|
|
$course_code = Database::escape_string($course_code);
|
|
$table = Database::get_main_table(TABLE_MAIN_COURSE);
|
|
$sql_query = "SELECT * FROM $table WHERE `code` = '$course_code'";
|
|
$sql_result = Database::query($sql_query, __FILE__, __LINE__);
|
|
$result = Database::fetch_array($sql_result);
|
|
$result = Database::generate_abstract_course_field_names($result);
|
|
if ($result===false) {
|
|
$result['db_name']='';
|
|
}
|
|
return $result;
|
|
}
|
|
/**
|
|
* @param $user_id (integer): the id of the user
|
|
* @return $user_info (array): user_id, lastname, firstname, username, email, ...
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, expanded to get info for any user
|
|
* @author Roan Embrechts, first version + converted to Database API
|
|
* @version 30 September 2004
|
|
* @desc find all the information about a specified user. Without parameter this is the current user.
|
|
* @todo shouldn't this be in the user.lib.php script?
|
|
*/
|
|
public static function get_user_info_from_id ($user_id = '') {
|
|
$table = Database::get_main_table(TABLE_MAIN_USER);
|
|
if ($user_id == '') {
|
|
return $GLOBALS["_user"];
|
|
} else {
|
|
$user_id = Database::escape_string($user_id);
|
|
$sql_query = "SELECT * FROM $table WHERE user_id = '$user_id'";
|
|
$result = Database::query($sql_query, __FILE__, __LINE__);
|
|
$result_array = mysql_fetch_array($result);
|
|
$result_array = Database::generate_abstract_user_field_names($result_array);
|
|
return $result_array;
|
|
}
|
|
}
|
|
/**
|
|
* This creates an abstraction layer between database field names
|
|
* and field names expected in code.
|
|
*
|
|
* This helps when changing database names.
|
|
* It's also useful now to get rid of the 'franglais'.
|
|
*
|
|
* @todo add more array entries to abstract course info from field names
|
|
* @author Roan Embrechts
|
|
*
|
|
* @todo what's the use of this function. I think this is better removed.
|
|
* There should be consistency in the variable names and the use throughout the scripts
|
|
* for the database name we should consistently use or db_name or database (db_name probably being the better one)
|
|
*/
|
|
public static function generate_abstract_course_field_names ($result_array) {
|
|
$visual_code = isset($result_array["visual_code"]) ? $result_array["visual_code"] : null;
|
|
$code = isset($result_array["code"]) ? $result_array["code"] : null;
|
|
$title = isset($result_array['title']) ? $result_array['title'] : null;
|
|
$db_name = isset($result_array["db_name"]) ? $result_array["db_name"] : null;
|
|
$category_code= isset($result_array["category_code"]) ? $result_array["category_code"] : null;
|
|
$result_array["official_code"] = $visual_code;
|
|
$result_array["visual_code"] = $visual_code;
|
|
$result_array["real_code"] = $code;
|
|
$result_array["system_code"] = $code;
|
|
$result_array["title"] = $title;
|
|
$result_array["database"] = $db_name;
|
|
$result_array["faculty"] = $category_code;
|
|
//$result_array["directory"] = $result_array["directory"];
|
|
/*
|
|
still to do: (info taken from local.inc.php)
|
|
|
|
$_course['id' ] = $cData['cours_id' ]; //auto-assigned integer
|
|
$_course['name' ] = $cData['title' ];
|
|
$_course['official_code'] = $cData['visual_code' ]; // use in echo
|
|
$_course['sysCode' ] = $cData['code' ]; // use as key in db
|
|
$_course['path' ] = $cData['directory' ]; // use as key in path
|
|
$_course['dbName' ] = $cData['db_name' ]; // use as key in db list
|
|
$_course['dbNameGlu' ] = $_configuration['table_prefix'] . $cData['dbName'] . $_configuration['db_glue']; // use in all queries
|
|
$_course['titular' ] = $cData['tutor_name' ];
|
|
$_course['language' ] = $cData['course_language' ];
|
|
$_course['extLink' ]['url' ] = $cData['department_url' ];
|
|
$_course['extLink' ]['name'] = $cData['department_name'];
|
|
$_course['categoryCode'] = $cData['faCode' ];
|
|
$_course['categoryName'] = $cData['faName' ];
|
|
|
|
$_course['visibility' ] = (bool) ($cData['visibility'] == 2 || $cData['visibility'] == 3);
|
|
$_course['registrationAllowed'] = (bool) ($cData['visibility'] == 1 || $cData['visibility'] == 2);
|
|
*/
|
|
return $result_array;
|
|
}
|
|
/**
|
|
* This creates an abstraction layer between database field names
|
|
* and field names expected in code.
|
|
*
|
|
* This helps when changing database names.
|
|
* It's also useful now to get rid of the 'franglais'.
|
|
*
|
|
* @todo add more array entries to abstract user info from field names
|
|
* @author Roan Embrechts
|
|
* @author Patrick Cool
|
|
*
|
|
* @todo what's the use of this function. I think this is better removed.
|
|
* There should be consistency in the variable names and the use throughout the scripts
|
|
*/
|
|
public static function generate_abstract_user_field_names ($result_array) {
|
|
$result_array['firstName'] = $result_array['firstname'];
|
|
$result_array['lastName'] = $result_array['lastname'];
|
|
$result_array['mail'] = $result_array['email'];
|
|
#$result_array['picture_uri'] = $result_array['picture_uri'];
|
|
#$result_array ['user_id' ] = $result_array['user_id' ];
|
|
return $result_array;
|
|
}
|
|
|
|
|
|
/*
|
|
-----------------------------------------------------------------------------
|
|
Private Functions
|
|
You should not access these from outside the class
|
|
No effort is made to keep the names / results the same.
|
|
-----------------------------------------------------------------------------
|
|
*/
|
|
/**
|
|
* Glues a course database.
|
|
* glue format from local.inc.php.
|
|
*/
|
|
public static function glue_course_database_name ($database_name) {
|
|
$prefix = Database::get_course_table_prefix();
|
|
$glue = Database::get_database_glue();
|
|
$database_name_with_glue = $prefix.$database_name.$glue;
|
|
return $database_name_with_glue;
|
|
}
|
|
/**
|
|
* @param string $database_name, can be empty to use current course db
|
|
*
|
|
* @return the glued parameter if it is not empty,
|
|
* or the current course database (glued) if the parameter is empty.
|
|
*/
|
|
public static function fix_database_parameter ($database_name) {
|
|
if ($database_name == '')
|
|
{
|
|
$course_info = api_get_course_info();
|
|
$database_name_with_glue = $course_info["dbNameGlu"];
|
|
}
|
|
else
|
|
{
|
|
$database_name_with_glue = Database::glue_course_database_name($database_name);
|
|
}
|
|
return $database_name_with_glue;
|
|
}
|
|
/**
|
|
* Structures a course database and table name to ready them
|
|
* for querying. The course database parameter is considered glued:
|
|
* e.g. COURSE001`.`
|
|
*/
|
|
public static function format_glued_course_table_name ($database_name_with_glue, $table) {
|
|
//$course_info = api_get_course_info();
|
|
return "`".$database_name_with_glue.$table."`";
|
|
}
|
|
/**
|
|
* Structures a database and table name to ready them
|
|
* for querying. The database parameter is considered not glued,
|
|
* just plain e.g. COURSE001
|
|
*/
|
|
public static function format_table_name($database, $table) {
|
|
return "`".$database."`.`".$table."`";
|
|
}
|
|
/**
|
|
* Count the number of rows in a table
|
|
* @param string $table The table of which the rows should be counted
|
|
* @return int The number of rows in the given table.
|
|
*/
|
|
public static function count_rows ($table) {
|
|
$sql = "SELECT COUNT(*) AS n FROM $table";
|
|
$res = api_sql_query($sql, __FILE__, __LINE__);
|
|
$obj = mysql_fetch_object($res);
|
|
return $obj->n;
|
|
}
|
|
/**
|
|
* Gets the ID of the last item inserted into the database
|
|
*
|
|
* @author Yannick Warnier <yannick.warnier@dokeos.com>
|
|
* @return integer The last ID as returned by the DB function
|
|
* @comment This should be updated to use ADODB at some point
|
|
*/
|
|
public static function get_last_insert_id () {
|
|
return mysql_insert_id();
|
|
}
|
|
/**
|
|
* Escapes a string to insert into the database as text
|
|
* @param string The string to escape
|
|
* @return string The escaped string
|
|
* @author Yannick Warnier <yannick.warnier@dokeos.com>
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
*/
|
|
public static function escape_string($string) {
|
|
if (get_magic_quotes_gpc())
|
|
{
|
|
$string = stripslashes($string);
|
|
}
|
|
return mysql_real_escape_string($string);
|
|
}
|
|
/**
|
|
* Gets the array from a SQL result (as returned by api_sql_query) - help achieving database independence
|
|
* @param resource The result from a call to sql_query (e.g. api_sql_query)
|
|
* @param string Optional: "ASSOC","NUM" or "BOTH", as the constant used in mysql_fetch_array.
|
|
* @return array Array of results as returned by php
|
|
* @author Yannick Warnier <yannick.warnier@dokeos.com>
|
|
*/
|
|
public static function fetch_array ($res, $option = 'BOTH') {
|
|
if ($option != 'BOTH')
|
|
{
|
|
if ($option == 'ASSOC')
|
|
{
|
|
return mysql_fetch_array($res, MYSQL_ASSOC);
|
|
}
|
|
elseif ($option == 'NUM')
|
|
{
|
|
return mysql_fetch_array($res, MYSQL_NUM);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
return mysql_fetch_array($res);
|
|
}
|
|
}
|
|
/**
|
|
* Gets the next row of the result of the SQL query (as returned by api_sql_query) in an object form
|
|
* @param resource The result from a call to sql_query (e.g. api_sql_query)
|
|
* @param string Optional class name to instanciate
|
|
* @param array Optional array of parameters
|
|
* @return object Object of class StdClass or the required class, containing the query result row
|
|
* @author Yannick Warnier <yannick.warnier@dokeos.com>
|
|
*/
|
|
public static function fetch_object ($res,$class=null,$params=null) {
|
|
if(!empty($class))
|
|
{
|
|
if(is_array($params))
|
|
{
|
|
return mysql_fetch_object($res,$class,$params);
|
|
}
|
|
return mysql_fetch_object($res,$class);
|
|
}
|
|
return mysql_fetch_object($res);
|
|
}
|
|
/**
|
|
* Gets the array from a SQL result (as returned by api_sql_query) - help achieving database independence
|
|
* @param resource The result from a call to sql_query (e.g. api_sql_query)
|
|
* @return array Array of results as returned by php (mysql_fetch_row)
|
|
* @author Yannick Warnier <yannick.warnier@dokeos.com>
|
|
*/
|
|
public static function fetch_row ($res) {
|
|
return mysql_fetch_row($res);
|
|
}
|
|
/**
|
|
* Gets the number of rows from the last query result - help achieving database independence
|
|
* @param resource The result
|
|
* @return integer The number of rows contained in this result
|
|
* @author Yannick Warnier <yannick.warnier@dokeos.com>
|
|
**/
|
|
public static function num_rows ($res) {
|
|
return mysql_num_rows($res);
|
|
}
|
|
|
|
public static function get_course_chat_connected_table ($database_name = '') {
|
|
$database_name_with_glue = self::fix_database_parameter($database_name);
|
|
return self::format_glued_course_table_name($database_name_with_glue, CHAT_CONNECTED_TABLE);
|
|
}
|
|
/**
|
|
* Acts as the relative *_result() function of most DB drivers and fetches a
|
|
* specific line and a field
|
|
* @param resource The database resource to get data from
|
|
* @param integer The row number
|
|
* @param string Optional field name or number
|
|
* @result mixed One cell of the result, or FALSE on error
|
|
*/
|
|
public static function result ($resource,$row,$field='') {
|
|
if (mysql_num_rows($resource) > 0) {
|
|
if(!empty($field))
|
|
{
|
|
return mysql_result($resource,$row,$field);
|
|
}
|
|
else
|
|
{
|
|
return mysql_result($resource,$row);
|
|
}
|
|
}
|
|
}
|
|
/**
|
|
* Recovers the last ID of any insert query executed over this SQL connection
|
|
* @return integer Unique ID of the latest inserted row
|
|
*/
|
|
public static function insert_id () {
|
|
return mysql_insert_id();
|
|
}
|
|
/**
|
|
* Returns the number of affected rows
|
|
* @param resource Optional database resource
|
|
*/
|
|
public static function affected_rows ($r=null) {
|
|
if(isset($r))
|
|
{
|
|
return mysql_affected_rows($r);
|
|
}
|
|
else
|
|
{
|
|
return mysql_affected_rows();
|
|
}
|
|
}
|
|
/**
|
|
* This function return a resource
|
|
* documentation has been added by Arthur Portugal
|
|
* @author Olivier Brouckaert;
|
|
* @param string $query - SQL query
|
|
* @param string $file - optional, the file path and name of the error (__FILE__)
|
|
* @param string $line - optional, the line of the error (__LINE__)
|
|
* @return resource - the return value of the query
|
|
*/
|
|
|
|
public static function query ($sql,$file='',$line=0) {
|
|
return api_sql_query($sql,$file,$line);
|
|
}
|
|
public static function error () {
|
|
return mysql_error();
|
|
}
|
|
/**
|
|
* Return course code from one given gradebook category's id
|
|
* @param int Category ID
|
|
* @return string Course code
|
|
* @todo move this function in a gradebook-related library
|
|
*/
|
|
public static function get_course_by_category ($category_id) {
|
|
$tbl_grade_categories = Database :: get_main_table(TABLE_MAIN_GRADEBOOK_CATEGORY);
|
|
$sql = 'SELECT course_code FROM '.$tbl_grade_categories.' WHERE id='.$category_id;
|
|
$res=api_sql_query($sql, __FILE__, __LINE__);
|
|
$option=Database::fetch_array($res,'ASSOC');
|
|
if ($option) {
|
|
return $option['course_code'];
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
|
|
}
|
|
//end class Database
|
|
|