119 lines
3.1 KiB
PHP
119 lines
3.1 KiB
PHP
<?php
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class WatchedItem {
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var $mTitle, $mUser;
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# Create a WatchedItem object with the given user and title
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/* static */ function &fromUserTitle( &$user, &$title ) {
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$wl = new WatchedItem;
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$wl->mUser =& $user;
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$wl->mTitle =& $title;
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$wl->id = $user->getId();
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$wl->ns = $title->getNamespace() & ~1;
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$wl->ti = $title->getDBkey();
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return $wl;
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}
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# Returns the memcached key for this item
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function watchKey() {
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global $wgDBname;
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return "$wgDBname:watchlist:user:$this->id:page:$this->ns:$this->ti";
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}
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# Is mTitle being watched by mUser?
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function isWatched()
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{
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# Pages and their talk pages are considered equivalent for watching;
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# remember that talk namespaces are numbered as page namespace+1.
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global $wgMemc;
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$fname = 'WatchedItem::isWatched';
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$key = $this->watchKey();
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$iswatched = $wgMemc->get( $key );
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if( is_integer( $iswatched ) ) return $iswatched;
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$dbr =& wfGetDB( DB_SLAVE );
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$res = $dbr->select( 'watchlist', 1, array( 'wl_user' => $this->id, 'wl_namespace' => $this->ns,
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'wl_title' => $this->ti ), $fname );
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$iswatched = ($dbr->numRows( $res ) > 0) ? 1 : 0;
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$wgMemc->set( $key, $iswatched );
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return $iswatched;
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}
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function addWatch()
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{
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$fname = "WatchedItem::addWatch";
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# REPLACE instead of INSERT because occasionally someone
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# accidentally reloads a watch-add operation.
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$dbw =& wfGetDB( DB_MASTER );
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$dbw->replace( 'watchlist', array(array('wl_user', 'wl_namespace', 'wl_title')),
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array(
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'wl_user' => $this->id,
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'wl_namespace' => $this->ns,
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'wl_title' => $this->ti,
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), $fname );
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global $wgMemc;
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$wgMemc->set( $this->watchkey(), 1 );
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return true;
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}
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function removeWatch()
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{
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$fname = 'WatchedItem::removeWatch';
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$dbw =& wfGetDB( DB_MASTER );
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$dbw->delete( 'watchlist',
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array(
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'wl_user' => $this->id,
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'wl_namespace' => $this->ns,
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'wl_title' => $this->ti
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), $fname
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);
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if ( $dbw->affectedRows() ) {
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global $wgMemc;
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$wgMemc->set( $this->watchkey(), 0 );
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return true;
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} else {
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return false;
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}
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}
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/* static */ function duplicateEntries( $ot, $nt ) {
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$fname = "WatchedItem::duplicateEntries";
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global $wgMemc, $wgDBname;
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$oldnamespace = $ot->getNamespace() & ~1;
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$newnamespace = $nt->getNamespace() & ~1;
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$oldtitle = $ot->getDBkey();
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$newtitle = $nt->getDBkey();
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$dbw =& wfGetDB( DB_MASTER );
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$watchlist = $dbw->tableName( 'watchlist' );
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$res = $dbw->select( 'watchlist', 'wl_user',
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array( 'wl_namespace' => $oldnamespace, 'wl_title' => $oldtitle ),
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$fname, 'FOR UPDATE'
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);
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# Construct array to replace into the watchlist
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$values = array();
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while ( $s = $dbw->fetchObject( $res ) ) {
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$values[] = array(
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'wl_user' => $s->wl_user,
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'wl_namespace' => $newnamespace,
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'wl_title' => $newtitle
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);
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}
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$dbw->freeResult( $res );
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# Perform replace
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# Note that multi-row replace is very efficient for MySQL but may be inefficient for
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# some other DBMSes, mostly due to poor simulation by us
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$dbw->replace( 'watchlist', array(array( 'wl_user', 'wl_namespace', 'wl_title')), $values, $fname );
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return true;
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}
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}
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?>
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