00001 <?php
00011 class UnusedimagesPage extends ImageQueryPage {
00012
00013 function isExpensive() { return true; }
00014
00015 function getName() {
00016 return 'Unusedimages';
00017 }
00018
00019 function sortDescending() {
00020 return false;
00021 }
00022 function isSyndicated() { return false; }
00023
00024 function getSQL() {
00025 global $wgCountCategorizedImagesAsUsed, $wgDBtype;
00026 $dbr = wfGetDB( DB_SLAVE );
00027
00028 switch ($wgDBtype) {
00029 case 'mysql':
00030 $epoch = 'UNIX_TIMESTAMP(img_timestamp)';
00031 break;
00032 case 'oracle':
00033 $epoch = '((trunc(img_timestamp) - to_date(\'19700101\',\'YYYYMMDD\')) * 86400)';
00034 break;
00035 case 'sqlite':
00036 $epoch = 'img_timestamp';
00037 break;
00038 default:
00039 $epoch = 'EXTRACT(epoch FROM img_timestamp)';
00040 }
00041
00042 if ( $wgCountCategorizedImagesAsUsed ) {
00043 list( $page, $image, $imagelinks, $categorylinks ) = $dbr->tableNamesN( 'page', 'image', 'imagelinks', 'categorylinks' );
00044
00045 return "SELECT 'Unusedimages' as type, 6 as namespace, img_name as title, $epoch as value,
00046 img_user, img_user_text, img_description
00047 FROM ((($page AS I LEFT JOIN $categorylinks AS L ON I.page_id = L.cl_from)
00048 LEFT JOIN $imagelinks AS P ON I.page_title = P.il_to)
00049 INNER JOIN $image AS G ON I.page_title = G.img_name)
00050 WHERE I.page_namespace = ".NS_FILE." AND L.cl_from IS NULL AND P.il_to IS NULL";
00051 } else {
00052 list( $image, $imagelinks ) = $dbr->tableNamesN( 'image','imagelinks' );
00053
00054 return "SELECT 'Unusedimages' as type, 6 as namespace, img_name as title, $epoch as value,
00055 img_user, img_user_text, img_description
00056 FROM $image LEFT JOIN $imagelinks ON img_name=il_to WHERE il_to IS NULL ";
00057 }
00058 }
00059
00060 function getPageHeader() {
00061 return wfMsgExt( 'unusedimagestext', array( 'parse' ) );
00062 }
00063
00064 }
00065
00069 function wfSpecialUnusedimages() {
00070 list( $limit, $offset ) = wfCheckLimits();
00071 $uip = new UnusedimagesPage();
00072
00073 return $uip->doQuery( $offset, $limit );
00074 }