MediaWiki 1.30.2

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

diff --git a/includes/LinkBatch.php b/includes/LinkBatch.php
deleted file mode 100644 (file)
index d9a9666..0000000
--- a/includes/LinkBatch.php
+++ /dev/null
@@ -1,191 +0,0 @@
-<?php
-
-/**
- * Class representing a list of titles
- * The execute() method checks them all for existence and adds them to a LinkCache object
- *
- * @ingroup Cache
- */
-class LinkBatch {
-       /**
-        * 2-d array, first index namespace, second index dbkey, value arbitrary
-        */
-       var $data = array();
-
-       function __construct( $arr = array() ) {
-               foreach( $arr as $item ) {
-                       $this->addObj( $item );
-               }
-       }
-
-       public function addObj( $title ) {
-               if ( is_object( $title ) ) {
-                       $this->add( $title->getNamespace(), $title->getDBkey() );
-               } else {
-                       wfDebug( "Warning: LinkBatch::addObj got invalid title object\n" );
-               }
-       }
-
-       public function add( $ns, $dbkey ) {
-               if ( $ns < 0 ) {
-                       return;
-               }
-               if ( !array_key_exists( $ns, $this->data ) ) {
-                       $this->data[$ns] = array();
-               }
-
-               $this->data[$ns][str_replace( ' ', '_', $dbkey )] = 1;
-       }
-
-       /**
-        * Set the link list to a given 2-d array
-        * First key is the namespace, second is the DB key, value arbitrary
-        */
-       public function setArray( $array ) {
-               $this->data = $array;
-       }
-
-       /**
-        * Returns true if no pages have been added, false otherwise.
-        */
-       public function isEmpty() {
-               return ($this->getSize() == 0);
-       }
-
-       /**
-        * Returns the size of the batch.
-        */
-       public function getSize() {
-               return count( $this->data );
-       }
-
-       /**
-        * Do the query and add the results to the LinkCache object
-        * Return an array mapping PDBK to ID
-        */
-        public function execute() {
-               $linkCache = LinkCache::singleton();
-               return $this->executeInto( $linkCache );
-        }
-
-       /**
-        * Do the query and add the results to a given LinkCache object
-        * Return an array mapping PDBK to ID
-        */
-       protected function executeInto( &$cache ) {
-               wfProfileIn( __METHOD__ );
-               $res = $this->doQuery();
-               $ids = $this->addResultToCache( $cache, $res );
-               wfProfileOut( __METHOD__ );
-               return $ids;
-       }
-
-       /**
-        * Add a ResultWrapper containing IDs and titles to a LinkCache object.
-        * As normal, titles will go into the static Title cache field.
-        * This function *also* stores extra fields of the title used for link
-        * parsing to avoid extra DB queries.
-        */
-       public function addResultToCache( $cache, $res ) {
-               if ( !$res ) {
-                       return array();
-               }
-
-               // For each returned entry, add it to the list of good links, and remove it from $remaining
-
-               $ids = array();
-               $remaining = $this->data;
-               while ( $row = $res->fetchObject() ) {
-                       $title = Title::makeTitle( $row->page_namespace, $row->page_title );
-                       $cache->addGoodLinkObj( $row->page_id, $title, $row->page_len, $row->page_is_redirect );
-                       $ids[$title->getPrefixedDBkey()] = $row->page_id;
-                       unset( $remaining[$row->page_namespace][$row->page_title] );
-               }
-
-               // The remaining links in $data are bad links, register them as such
-               foreach ( $remaining as $ns => $dbkeys ) {
-                       foreach ( $dbkeys as $dbkey => $unused ) {
-                               $title = Title::makeTitle( $ns, $dbkey );
-                               $cache->addBadLinkObj( $title );
-                               $ids[$title->getPrefixedDBkey()] = 0;
-                       }
-               }
-               return $ids;
-       }
-
-       /**
-        * Perform the existence test query, return a ResultWrapper with page_id fields
-        */
-       public function doQuery() {
-               if ( $this->isEmpty() ) {
-                       return false;
-               }
-               wfProfileIn( __METHOD__ );
-
-               // Construct query
-               // This is very similar to Parser::replaceLinkHolders
-               $dbr = wfGetDB( DB_SLAVE );
-               $page = $dbr->tableName( 'page' );
-               $set = $this->constructSet( 'page', $dbr );
-               if ( $set === false ) {
-                       wfProfileOut( __METHOD__ );
-                       return false;
-               }
-               $sql = "SELECT page_id, page_namespace, page_title, page_len, page_is_redirect FROM $page WHERE $set";
-
-               // Do query
-               $res = $dbr->query( $sql, __METHOD__ );
-               wfProfileOut( __METHOD__ );
-               return $res;
-       }
-
-       /**
-        * Construct a WHERE clause which will match all the given titles.
-        *
-        * @param string $prefix the appropriate table's field name prefix ('page', 'pl', etc)
-        * @return string
-        * @public
-        */
-       public function constructSet( $prefix, &$db ) {
-               $first = true;
-               $firstTitle = true;
-               $sql = '';
-               foreach ( $this->data as $ns => $dbkeys ) {
-                       if ( !count( $dbkeys ) ) {
-                               continue;
-                       }
-
-                       if ( $first ) {
-                               $first = false;
-                       } else {
-                               $sql .= ' OR ';
-                       }
-
-                       if (count($dbkeys)==1) { // avoid multiple-reference syntax if simple equality can be used
-                               $singleKey = array_keys($dbkeys);
-                               $sql .= "({$prefix}_namespace=$ns AND {$prefix}_title=".
-                                       $db->addQuotes($singleKey[0]).
-                                       ")";
-                       } else {
-                               $sql .= "({$prefix}_namespace=$ns AND {$prefix}_title IN (";
-
-                               $firstTitle = true;
-                               foreach( $dbkeys as $dbkey => $unused ) {
-                                       if ( $firstTitle ) {
-                                               $firstTitle = false;
-                                       } else {
-                                               $sql .= ',';
-                                       }
-                                       $sql .= $db->addQuotes( $dbkey );
-                               }
-                               $sql .= '))';
-                       }
-               }
-               if ( $first && $firstTitle ) {
-                       # No titles added
-                       return false;
-               } else {
-                       return $sql;
-               }
-       }
-}