diff options
Diffstat (limited to 'includes/cache/LinkCache.php')
| -rw-r--r-- | includes/cache/LinkCache.php | 98 |
1 files changed, 77 insertions, 21 deletions
diff --git a/includes/cache/LinkCache.php b/includes/cache/LinkCache.php index f759c020..54de1989 100644 --- a/includes/cache/LinkCache.php +++ b/includes/cache/LinkCache.php @@ -35,18 +35,44 @@ class LinkCache { private $mGoodLinkFields = array(); private $mBadLinks = array(); private $mForUpdate = false; + private $useDatabase = true; /** - * Get an instance of this class + * @var LinkCache + */ + protected static $instance; + + /** + * Get an instance of this class. * * @return LinkCache */ static function &singleton() { - static $instance; - if ( !isset( $instance ) ) { - $instance = new LinkCache; + if ( self::$instance ) { + return self::$instance; } - return $instance; + self::$instance = new LinkCache; + return self::$instance; + } + + /** + * Destroy the singleton instance, a new one will be created next time + * singleton() is called. + * @since 1.22 + */ + static function destroySingleton() { + self::$instance = null; + } + + /** + * Set the singleton instance to a given object. + * Since we do not have an interface for LinkCache, you have to be sure the + * given object implements all the LinkCache public methods. + * @param LinkCache $instance + * @since 1.22 + */ + static function setSingleton( LinkCache $instance ) { + self::$instance = $instance; } /** @@ -74,11 +100,11 @@ class LinkCache { * Get a field of a title object from cache. * If this link is not good, it will return NULL. * @param $title Title - * @param $field String: ('length','redirect','revision') + * @param string $field ('length','redirect','revision','model') * @return mixed */ public function getGoodLinkFieldObj( $title, $field ) { - $dbkey = $title->getPrefixedDbKey(); + $dbkey = $title->getPrefixedDBkey(); if ( array_key_exists( $dbkey, $this->mGoodLinkFields ) ) { return $this->mGoodLinkFields[$dbkey][$field]; } else { @@ -102,14 +128,16 @@ class LinkCache { * @param $len Integer: text's length * @param $redir Integer: whether the page is a redirect * @param $revision Integer: latest revision's ID + * @param $model Integer: latest revision's content model ID */ - public function addGoodLinkObj( $id, $title, $len = -1, $redir = null, $revision = false ) { - $dbkey = $title->getPrefixedDbKey(); + public function addGoodLinkObj( $id, $title, $len = -1, $redir = null, $revision = false, $model = false ) { + $dbkey = $title->getPrefixedDBkey(); $this->mGoodLinks[$dbkey] = intval( $id ); $this->mGoodLinkFields[$dbkey] = array( 'length' => intval( $len ), 'redirect' => intval( $redir ), - 'revision' => intval( $revision ) ); + 'revision' => intval( $revision ), + 'model' => intval( $model ) ); } /** @@ -117,15 +145,16 @@ class LinkCache { * @since 1.19 * @param $title Title * @param $row object which has the fields page_id, page_is_redirect, - * page_latest + * page_latest and page_content_model */ public function addGoodLinkObjFromRow( $title, $row ) { - $dbkey = $title->getPrefixedDbKey(); + $dbkey = $title->getPrefixedDBkey(); $this->mGoodLinks[$dbkey] = intval( $row->page_id ); $this->mGoodLinkFields[$dbkey] = array( 'length' => intval( $row->page_len ), 'redirect' => intval( $row->page_is_redirect ), 'revision' => intval( $row->page_latest ), + 'model' => !empty( $row->page_content_model ) ? strval( $row->page_content_model ) : null, ); } @@ -133,7 +162,7 @@ class LinkCache { * @param $title Title */ public function addBadLinkObj( $title ) { - $dbkey = $title->getPrefixedDbKey(); + $dbkey = $title->getPrefixedDBkey(); if ( !$this->isBadLink( $dbkey ) ) { $this->mBadLinks[$dbkey] = 1; } @@ -147,24 +176,29 @@ class LinkCache { * @param $title Title */ public function clearLink( $title ) { - $dbkey = $title->getPrefixedDbKey(); + $dbkey = $title->getPrefixedDBkey(); unset( $this->mBadLinks[$dbkey] ); unset( $this->mGoodLinks[$dbkey] ); unset( $this->mGoodLinkFields[$dbkey] ); } - public function getGoodLinks() { return $this->mGoodLinks; } - public function getBadLinks() { return array_keys( $this->mBadLinks ); } + public function getGoodLinks() { + return $this->mGoodLinks; + } + + public 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 + * @param string $title title to add * @return Integer */ public function addLink( $title ) { $nt = Title::newFromDBkey( $title ); - if( $nt ) { + if ( $nt ) { return $this->addLinkObj( $nt ); } else { return 0; @@ -172,13 +206,27 @@ class LinkCache { } /** + * Enable or disable database use. + * @since 1.22 + * @param $value Boolean + * @return Boolean + */ + public function useDatabase( $value = null ) { + if ( $value !== null ) { + $this->useDatabase = (bool)$value; + } + return $this->useDatabase; + } + + /** * Add a title to the link cache, return the page_id or zero if non-existent * * @param $nt Title object to add * @return Integer */ public function addLinkObj( $nt ) { - global $wgAntiLockFlags; + global $wgAntiLockFlags, $wgContentHandlerUseDB; + wfProfileIn( __METHOD__ ); $key = $nt->getPrefixedDBkey(); @@ -197,6 +245,10 @@ class LinkCache { return 0; } + if( !$this->useDatabase ) { + return 0; + } + # Some fields heavily used for linking... if ( $this->mForUpdate ) { $db = wfGetDB( DB_MASTER ); @@ -210,8 +262,12 @@ class LinkCache { $options = array(); } - $s = $db->selectRow( 'page', - array( 'page_id', 'page_len', 'page_is_redirect', 'page_latest' ), + $f = array( 'page_id', 'page_len', 'page_is_redirect', 'page_latest' ); + if ( $wgContentHandlerUseDB ) { + $f[] = 'page_content_model'; + } + + $s = $db->selectRow( 'page', $f, array( 'page_namespace' => $nt->getNamespace(), 'page_title' => $nt->getDBkey() ), __METHOD__, $options ); # Set fields... |