MediaWiki 1.30.2

[autoinstallsdev/mediawiki.git] / includes / LinkCache.php

diff --git a/includes/LinkCache.php b/includes/LinkCache.php
deleted file mode 100644 (file)
index 7c49d88..0000000
--- a/includes/LinkCache.php
+++ /dev/null
@@ -1,172 +0,0 @@
-<?php
-/**
- * Cache for article titles (prefixed DB keys) and ids linked from one source
- * 
- * @addtogroup Cache
- */
-class LinkCache {
-       // Increment $mClassVer whenever old serialized versions of this class
-       // becomes incompatible with the new version.
-       /* private */ var $mClassVer = 3;
-
-       /* private */ var $mPageLinks;
-       /* private */ var $mGoodLinks, $mBadLinks;
-       /* private */ var $mForUpdate;
-
-       /**
-        * Get an instance of this class
-        */
-       static function &singleton() {
-               static $instance;
-               if ( !isset( $instance ) ) {
-                       $instance = new LinkCache;
-               }
-               return $instance;
-       }
-
-       function __construct() {
-               $this->mForUpdate = false;
-               $this->mPageLinks = array();
-               $this->mGoodLinks = array();
-               $this->mBadLinks = array();
-       }
-
-       /* private */ function getKey( $title ) {
-               return wfMemcKey( 'lc', 'title', $title );
-       }
-
-       /**
-        * General accessor to get/set whether SELECT FOR UPDATE should be used
-        */
-       function forUpdate( $update = NULL ) {
-               return wfSetVar( $this->mForUpdate, $update );
-       }
-
-       function getGoodLinkID( $title ) {
-               if ( array_key_exists( $title, $this->mGoodLinks ) ) {
-                       return $this->mGoodLinks[$title];
-               } else {
-                       return 0;
-               }
-       }
-
-       function isBadLink( $title ) {
-               return array_key_exists( $title, $this->mBadLinks );
-       }
-
-       function addGoodLinkObj( $id, $title ) {
-               $dbkey = $title->getPrefixedDbKey();
-               $this->mGoodLinks[$dbkey] = $id;
-               $this->mPageLinks[$dbkey] = $title;
-       }
-
-       function addBadLinkObj( $title ) {
-               $dbkey = $title->getPrefixedDbKey();
-               if ( ! $this->isBadLink( $dbkey ) ) {
-                       $this->mBadLinks[$dbkey] = 1;
-                       $this->mPageLinks[$dbkey] = $title;
-               }
-       }
-
-       function clearBadLink( $title ) {
-               unset( $this->mBadLinks[$title] );
-               $this->clearLink( $title );
-       }
-
-       function clearLink( $title ) {
-               global $wgMemc, $wgLinkCacheMemcached;
-               if( $wgLinkCacheMemcached )
-                       $wgMemc->delete( $this->getKey( $title ) );
-       }
-
-       function getPageLinks() { return $this->mPageLinks; }
-       function getGoodLinks() { return $this->mGoodLinks; }
-       function getBadLinks() { return array_keys( $this->mBadLinks ); }
-
-       /**
-        * Add a title to the link cache, return the page_id or zero if non-existent
-        * @param $title String: title to add
-        * @return integer
-        */
-       function addLink( $title ) {
-               $nt = Title::newFromDBkey( $title );
-               if( $nt ) {
-                       return $this->addLinkObj( $nt );
-               } else {
-                       return 0;
-               }
-       }
-
-       /**
-        * Add a title to the link cache, return the page_id or zero if non-existent
-        * @param $nt Title to add.
-        * @return integer
-        */
-       function addLinkObj( &$nt ) {
-               global $wgMemc, $wgLinkCacheMemcached, $wgAntiLockFlags;
-               $title = $nt->getPrefixedDBkey();
-               if ( $this->isBadLink( $title ) ) { return 0; }
-               $id = $this->getGoodLinkID( $title );
-               if ( 0 != $id ) { return $id; }
-
-               $fname = 'LinkCache::addLinkObj';
-               global $wgProfiling, $wgProfiler;
-               if ( $wgProfiling && isset( $wgProfiler ) ) {
-                       $fname .= ' (' . $wgProfiler->getCurrentSection() . ')';
-               }
-
-               wfProfileIn( $fname );
-
-               $ns = $nt->getNamespace();
-               $t = $nt->getDBkey();
-
-               if ( '' == $title ) {
-                       wfProfileOut( $fname );
-                       return 0;
-               }
-
-               $id = NULL;
-               if( $wgLinkCacheMemcached )
-                       $id = $wgMemc->get( $key = $this->getKey( $title ) );
-               if( ! is_integer( $id ) ) {
-                       if ( $this->mForUpdate ) {
-                               $db = wfGetDB( DB_MASTER );
-                               if ( !( $wgAntiLockFlags & ALF_NO_LINK_LOCK ) ) {
-                                       $options = array( 'FOR UPDATE' );
-                               } else {
-                                       $options = array();
-                               }
-                       } else {
-                               $db = wfGetDB( DB_SLAVE );
-                               $options = array();
-                       }
-
-                       $id = $db->selectField( 'page', 'page_id',
-                                       array( 'page_namespace' => $ns, 'page_title' => $t ),
-                                       $fname, $options );
-                       if ( !$id ) {
-                               $id = 0;
-                       }
-                       if( $wgLinkCacheMemcached )
-                               $wgMemc->add( $key, $id, 3600*24 );
-               }
-
-               if( 0 == $id ) {
-                       $this->addBadLinkObj( $nt );
-               } else {
-                       $this->addGoodLinkObj( $id, $nt );
-               }
-               wfProfileOut( $fname );
-               return $id;
-       }
-
-       /**
-        * Clears cache
-        */
-       function clear() {
-               $this->mPageLinks = array();
-               $this->mGoodLinks = array();
-               $this->mBadLinks = array();
-       }
-}
-