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 $epoch = $wgDBtype == 'mysql' ?
00029 'UNIX_TIMESTAMP(img_timestamp)' :
00030 'EXTRACT(epoch FROM img_timestamp)';
00031
00032 if ( $wgCountCategorizedImagesAsUsed ) {
00033 list( $page, $image, $imagelinks, $categorylinks ) = $dbr->tableNamesN( 'page', 'image', 'imagelinks', 'categorylinks' );
00034
00035 return "SELECT 'Unusedimages' as type, 6 as namespace, img_name as title, $epoch as value,
00036 img_user, img_user_text, img_description
00037 FROM ((($page AS I LEFT JOIN $categorylinks AS L ON I.page_id = L.cl_from)
00038 LEFT JOIN $imagelinks AS P ON I.page_title = P.il_to)
00039 INNER JOIN $image AS G ON I.page_title = G.img_name)
00040 WHERE I.page_namespace = ".NS_FILE." AND L.cl_from IS NULL AND P.il_to IS NULL";
00041 } else {
00042 list( $image, $imagelinks ) = $dbr->tableNamesN( 'image','imagelinks' );
00043
00044 return "SELECT 'Unusedimages' as type, 6 as namespace, img_name as title, $epoch as value,
00045 img_user, img_user_text, img_description
00046 FROM $image LEFT JOIN $imagelinks ON img_name=il_to WHERE il_to IS NULL ";
00047 }
00048 }
00049
00050 function getPageHeader() {
00051 return wfMsgExt( 'unusedimagestext', array( 'parse' ) );
00052 }
00053
00054 }
00055
00059 function wfSpecialUnusedimages() {
00060 list( $limit, $offset ) = wfCheckLimits();
00061 $uip = new UnusedimagesPage();
00062
00063 return $uip->doQuery( $offset, $limit );
00064 }