X-Git-Url: https://git.heureux-cyclage.org/?a=blobdiff_plain;f=includes%2FSearchEngine.php;h=c3b38519a7f3e1085fe52df29a13c8ce57a39e75;hb=cdbbe0ad4aaf40c1872d204a68a014d77981e8b7;hp=930ab83160f2a8f10439308cb8dcb1de580c02d9;hpb=bdb843ade7d2c98425982fc912ecce46eb530a89;p=lhc%2Fweb%2Fwiklou.git diff --git a/includes/SearchEngine.php b/includes/SearchEngine.php index 930ab83160..c3b38519a7 100644 --- a/includes/SearchEngine.php +++ b/includes/SearchEngine.php @@ -1,645 +1,345 @@ rawText = trim( $text ); - - # We display the query, so let's strip it for safety - # - global $wgDBmysql4; - $lc = SearchEngine::legalSearchChars() . '()'; - if( $wgDBmysql4 ) { - $lc .= "\"~<>*+-"; - } - $this->filteredText = trim( preg_replace( "/[^{$lc}]/", " ", $text ) ); - $this->searchTerms = array(); - $this->strictMatching = true; # Google-style, add '+' on all terms - - $this->db =& wfGetDB( DB_SLAVE ); - } + var $limit = 10; + var $offset = 0; + var $searchTerms = array(); + var $namespaces = array( NS_MAIN ); + var $showRedirects = false; /** - * Return a partial WHERE clause to limit the search to the given namespaces + * Perform a full text search query and return a result set. + * If title searches are not supported or disabled, return null. + * + * @param string $term - Raw search term + * @return SearchResultSet + * @access public + * @abstract */ - function queryNamespaces() { - $namespaces = implode( ',', $this->namespacesToSearch ); - if ($namespaces == '') { - $namespaces = '0'; - } - return "AND cur_namespace IN (" . $namespaces . ')'; + function searchText( $term ) { + return null; } /** - * Return a partial WHERE clause to include or exclude redirects from results + * Perform a title-only search query and return a result set. + * If title searches are not supported or disabled, return null. + * + * @param string $term - Raw search term + * @return SearchResultSet + * @access public + * @abstract */ - function searchRedirects() { - if ( $this->doSearchRedirects ) { - return ''; - } else { - return 'AND cur_is_redirect=0 '; - } + function searchTitle( $term ) { + return null; } /** - * @access private - */ function initNamespaceCheckbox( $i ) { - global $wgUser, $wgNamespacesToBeSearchedDefault; - - if ($wgUser->getID()) { - // User is logged in so we retrieve his default namespaces - return $wgUser->getOption( 'searchNs'.$i ); - } else { - // User is not logged in so we give him the global default namespaces - return !empty($wgNamespacesToBeSearchedDefault[ $i ]); - } - } - - /** - * Display the "power search" footer. Does not actually perform the search, - * that is done by showResults() + * If an exact title match can be find, or a very slightly close match, + * return the title. If no match, returns NULL. + * + * @static + * @param string $term + * @return Title + * @private */ - function powersearch() { - global $wgUser, $wgOut, $wgContLang, $wgTitle, $wgRequest; - $sk =& $wgUser->getSkin(); - - $search = $this->rawText; - $searchx = $wgRequest->getVal( 'searchx' ); - $listredirs = $wgRequest->getVal( 'redirs' ); - - $ret = wfMsg('powersearchtext'); # Text to be returned - $tempText = ''; # Temporary text, for substitution into $ret - - if( isset( $_REQUEST['searchx'] ) ) { - $this->addToQuery['searchx'] = '1'; - } - - # Do namespace checkboxes - $namespaces = $wgContLang->getNamespaces(); - foreach ( $namespaces as $i => $namespace ) { - # Skip virtual namespaces - if ( $i < 0 ) { - continue; - } - - $formVar = 'ns'.$i; - - # Initialise checkboxValues, either from defaults or from - # a previous invocation - if ( !isset( $searchx ) ) { - $checkboxValue = $this->initNamespaceCheckbox( $i ); - } else { - $checkboxValue = $wgRequest->getVal( $formVar ); - } - - $checked = ''; - if ( $checkboxValue == 1 ) { - $checked = ' checked="checked"'; - $this->addToQuery['ns'.$i] = 1; - array_push( $this->namespacesToSearch, $i ); - } - $name = str_replace( '_', ' ', $namespaces[$i] ); - if ( '' == $name ) { - $name = wfMsg( 'blanknamespace' ); - } + function getNearMatch( $term ) { + # Exact match? No need to look further. + $title = Title::newFromText( $term ); + if (is_null($title)) + return NULL; - if ( $tempText !== '' ) { - $tempText .= ' '; - } - $tempText .= "{$name}\n"; + if ( $title->getNamespace() == NS_SPECIAL || $title->exists() ) { + return $title; } - $ret = str_replace ( '$1', $tempText, $ret ); - - # List redirects checkbox - $checked = ''; - if ( $listredirs == 1 ) { - $this->addToQuery['redirs'] = 1; - $checked = ' checked="checked"'; + # Now try all lower case (i.e. first letter capitalized) + # + $title = Title::newFromText( strtolower( $term ) ); + if ( $title->exists() ) { + return $title; } - $tempText = "\n"; - $ret = str_replace( '$2', $tempText, $ret ); - - # Search field - - $tempText = "\n"; - $ret = str_replace( "$3", $tempText, $ret ); - # Searchx button + # Now try capitalized string + # + $title = Title::newFromText( ucwords( strtolower( $term ) ) ); + if ( $title->exists() ) { + return $title; + } - $tempText = '\n"; - $ret = str_replace( '$9', $tempText, $ret ); + # Now try all upper case + # + $title = Title::newFromText( strtoupper( $term ) ); + if ( $title->exists() ) { + return $title; + } - $action = $sk->escapeSearchLink(); - $ret = "

\n
\n{$ret}\n
\n"; + # Now try Word-Caps-Breaking-At-Word-Breaks, for hyphenated names etc + $title = Title::newFromText( preg_replace_callback( + '/\b([\w\x80-\xff]+)\b/', + create_function( '$matches', ' + global $wgContLang; + return $wgContLang->ucfirst($matches[1]); + ' ), + $term ) ); + if ( $title->exists() ) { + return $title; + } - if ( isset ( $searchx ) ) { - if ( ! $listredirs ) { - $this->doSearchRedirects = false; + global $wgCapitalLinks, $wgContLang; + if( !$wgCapitalLinks ) { + // Catch differs-by-first-letter-case-only + $title = Title::newFromText( $wgContLang->ucfirst( $term ) ); + if ( $title->exists() ) { + return $title; + } + $title = Title::newFromText( $wgContLang->lcfirst( $term ) ); + if ( $title->exists() ) { + return $title; } } - return $ret; - } - - function setupPage() { - global $wgOut; - $wgOut->setPageTitle( wfMsg( 'searchresults' ) ); - $wgOut->setSubtitle( wfMsg( 'searchquery', htmlspecialchars( $this->rawText ) ) ); - $wgOut->setArticleRelated( false ); - $wgOut->setRobotpolicy( 'noindex,nofollow' ); - } - - /** - * Perform the search and construct the results page - */ - function showResults() { - global $wgUser, $wgTitle, $wgOut, $wgLang; - global $wgDisableTextSearch, $wgInputEncoding; - $fname = 'SearchEngine::showResults'; - - $search = $this->rawText; - $powersearch = $this->powersearch(); /* Need side-effects here? */ + $title = Title::newFromText( $term ); - $this->setupPage(); - - $sk = $wgUser->getSkin(); - $wgOut->addWikiText( wfMsg( 'searchresulttext' ) ); - - if ( !$this->parseQuery() ) { - $wgOut->addWikiText( - '==' . wfMsg( 'badquery' ) . "==\n" . - wfMsg( 'badquerytext' ) ); - return; - } - list( $limit, $offset ) = wfCheckLimits( 20, 'searchlimit' ); - - if ( $wgDisableTextSearch ) { - $wgOut->addHTML( wfMsg( 'searchdisabled' ) ); - $wgOut->addHTML( wfMsg( 'googlesearch', - htmlspecialchars( $this->rawText ), - htmlspecialchars( $wgInputEncoding ) ) ); - return; + # Entering an IP address goes to the contributions page + if ( ( $title->getNamespace() == NS_USER && User::isIP($title->getText() ) ) + || User::isIP( trim( $term ) ) ) { + return Title::makeTitle( NS_SPECIAL, "Contributions/" . $title->getDbkey() ); } - $titleMatches = $this->getMatches( $this->titleCond, $limit, $offset ); - $textMatches = $this->getMatches( $this->textCond, $limit, $offset ); - $sk = $wgUser->getSkin(); - - $num = count( $titleMatches ) + count( $textMatches ); - if ( $num >= $limit ) { - $top = wfShowingResults( $offset, $limit ); - } else { - $top = wfShowingResultsNum( $offset, $limit, $num ); + # Entering a user goes to the user page whether it's there or not + if ( $title->getNamespace() == NS_USER ) { + return $title; } - $wgOut->addHTML( "

{$top}

\n" ); - # For powersearch - $a2l = ''; - $akk = array_keys( $this->addToQuery ); - foreach ( $akk AS $ak ) { - $a2l .= "&{$ak}={$this->addToQuery[$ak]}" ; + # Quoted term? Try without the quotes... + if( preg_match( '/^"([^"]+)"$/', $term, $matches ) ) { + return SearchEngine::getNearMatch( $matches[1] ); } - $prevnext = wfViewPrevNext( $offset, $limit, '', - 'search=' . wfUrlencode( $this->filteredText ) . $a2l ); - $wgOut->addHTML( "
{$prevnext}\n" ); - - $foundsome = $this->showMatches( $titleMatches, $offset, 'notitlematches', 'titlematches' ) - || $this->showMatches( $textMatches, $offset, 'notextmatches', 'textmatches' ); - - if ( !$foundsome ) { - $wgOut->addWikiText( wfMsg( 'nonefound' ) ); - } - $wgOut->addHTML( "

{$prevnext}

\n" ); - $wgOut->addHTML( $powersearch ); + return NULL; } function legalSearchChars() { - $lc = "A-Za-z_'0-9\\x80-\\xFF\\-"; - return $lc; + return "A-Za-z_'0-9\\x80-\\xFF\\-"; } - function parseQuery() { - global $wgDBmysql4; - if (strlen($this->filteredText) < 1) - return MW_SEARCH_BAD_QUERY; - - if( $wgDBmysql4 ) { - # Use cleaner boolean search if available - return $this->parseQuery4(); - } else { - # Fall back to ugly hack with multiple search clauses - return $this->parseQuery3(); - } + /** + * Set the maximum number of results to return + * and how many to skip before returning the first. + * + * @param int $limit + * @param int $offset + * @access public + */ + function setLimitOffset( $limit, $offset = 0 ) { + $this->limit = intval( $limit ); + $this->offset = intval( $offset ); } - - function parseQuery3() { - global $wgDBminWordLen, $wgContLang; - - # on non mysql4 database: get list of words we don't want to search for - require_once( 'FulltextStoplist.php' ); - - $lc = SearchEngine::legalSearchChars() . '()'; - $q = preg_replace( "/([()])/", " \\1 ", $this->filteredText ); - $q = preg_replace( "/\\s+/", " ", $q ); - $w = explode( ' ', trim( $q ) ); - - $last = $cond = ''; - foreach ( $w as $word ) { - $word = $wgContLang->stripForSearch( $word ); - if ( 'and' == $word || 'or' == $word || 'not' == $word - || '(' == $word || ')' == $word ) { - $cond .= ' ' . strtoupper( $word ); - $last = ''; - } else if ( strlen( $word ) < $wgDBminWordLen ) { - continue; - } else if ( FulltextStoplist::inList( $word ) ) { - continue; - } else { - if ( '' != $last ) { $cond .= ' AND'; } - $cond .= " (MATCH (##field##) AGAINST ('" . - $this->db->strencode( $word ). "'))"; - $last = $word; - array_push( $this->searchTerms, "\\b" . $word . "\\b" ); - } - } - if ( 0 == count( $this->searchTerms ) ) { - return MW_SEARCH_BAD_QUERY; - } - $this->titleCond = '(' . str_replace( '##field##', - 'si_title', $cond ) . ' )'; - - $this->textCond = '(' . str_replace( '##field##', - 'si_text', $cond ) . ' AND (cur_is_redirect=0) )'; - - return MW_SEARCH_OK; + /** + * Set which namespaces the search should include. + * Give an array of namespace index numbers. + * + * @param array $namespaces + * @access public + */ + function setNamespaces( $namespaces ) { + $this->namespaces = $namespaces; } - - function parseQuery4() { + + /** + * Make a list of searchable namespaces and their canonical names. + * @return array + * @access public + */ + function searchableNamespaces() { global $wgContLang; - $lc = SearchEngine::legalSearchChars(); - $searchon = ''; - $this->searchTerms = array(); - - # FIXME: This doesn't handle parenthetical expressions. - if( preg_match_all( '/([-+<>~]?)(([' . $lc . ']+)(\*?)|"[^"]*")/', - $this->filteredText, $m, PREG_SET_ORDER ) ) { - foreach( $m as $terms ) { - if( $searchon !== '' ) $searchon .= ' '; - if( $this->strictMatching && ($terms[1] == '') ) { - $terms[1] = '+'; - } - $searchon .= $terms[1] . $wgContLang->stripForSearch( $terms[2] ); - if( !empty( $terms[3] ) ) { - $regexp = preg_quote( $terms[3] ); - if( $terms[4] ) $regexp .= "[0-9A-Za-z_]+"; - } else { - $regexp = preg_quote( str_replace( '"', '', $terms[2] ) ); - } - $this->searchTerms[] = $regexp; + $arr = array(); + foreach( $wgContLang->getNamespaces() as $ns => $name ) { + if( $ns >= NS_MAIN ) { + $arr[$ns] = $name; } - wfDebug( "Would search with '$searchon'\n" ); - wfDebug( "Match with /\b" . implode( '\b|\b', $this->searchTerms ) . "\b/\n" ); - } else { - wfDebug( "Can't understand search query '{$this->filteredText}'\n" ); } - - $searchon = $this->db->strencode( $searchon ); - $this->titleCond = " MATCH(si_title) AGAINST('$searchon' IN BOOLEAN MODE)"; - $this->textCond = " (MATCH(si_text) AGAINST('$searchon' IN BOOLEAN MODE) AND cur_is_redirect=0)"; - return MW_SEARCH_OK; + return $arr; } - function &getMatches( $cond, $limit, $offset = 0 ) { - $searchindex = $this->db->tableName( 'searchindex' ); - $cur = $this->db->tableName( 'cur' ); - $searchnamespaces = $this->queryNamespaces(); - $redircond = $this->searchRedirects(); - - $sql = "SELECT cur_id,cur_namespace,cur_title," . - "cur_text FROM $cur,$searchindex " . - "WHERE cur_id=si_page AND {$cond} " . - "{$searchnamespaces} {$redircond} " . - $this->db->limitResult( $limit, $offset ); - - $res = $this->db->query( $sql, 'SearchEngine::getMatches' ); - $matches = array(); - while ( $row = $this->db->fetchObject( $res ) ) { - $matches[] = $row; - } - $this->db->freeResult( $res ); - - return $matches; + /** + * Return a 'cleaned up' search string + * + * @return string + * @access public + */ + function filter( $text ) { + $lc = $this->legalSearchChars(); + return trim( preg_replace( "/[^{$lc}]/", " ", $text ) ); } - - function showMatches( &$matches, $offset, $msgEmpty, $msgFound ) { - global $wgOut; - if ( 0 == count( $matches ) ) { - $wgOut->addHTML( "

" . wfMsg( $msgEmpty ) . - "

\n" ); - return false; + /** + * Load up the appropriate search engine class for the currently + * active database backend, and return a configured instance. + * + * @return SearchEngine + * @private + */ + function create() { + global $wgDBtype, $wgSearchType; + if( $wgSearchType ) { + $class = $wgSearchType; + } elseif( $wgDBtype == 'mysql' ) { + $class = 'SearchMySQL4'; + } else if ( $wgDBtype == 'postgres' ) { + $class = 'SearchPostgres'; } else { - $off = $offset + 1; - $wgOut->addHTML( "

" . wfMsg( $msgFound ) . - "

\n
    " ); - - foreach( $matches as $row ) { - $this->showHit( $row ); - } - $wgOut->addHTML( "
\n" ); - return true; + $class = 'SearchEngineDummy'; } + $search = new $class( wfGetDB( DB_SLAVE ) ); + $search->setLimitOffset(0,0); + return $search; } - function showHit( $row ) { - global $wgUser, $wgOut, $wgContLang; - - $t = Title::makeName( $row->cur_namespace, $row->cur_title ); - if( is_null( $t ) ) { - $wgOut->addHTML( "\n" ); - return; - } - $sk = $wgUser->getSkin(); - - $contextlines = $wgUser->getOption( 'contextlines' ); - if ( '' == $contextlines ) { $contextlines = 5; } - $contextchars = $wgUser->getOption( 'contextchars' ); - if ( '' == $contextchars ) { $contextchars = 50; } - - $link = $sk->makeKnownLink( $t, '' ); - $size = wfMsg( 'nbytes', strlen( $row->cur_text ) ); - $wgOut->addHTML( "
  • {$link} ({$size})" ); - - $lines = explode( "\n", $row->cur_text ); - $pat1 = "/(.*)(" . implode( "|", $this->searchTerms ) . ")(.*)/i"; - $lineno = 0; - - foreach ( $lines as $line ) { - if ( 0 == $contextlines ) { - break; - } - --$contextlines; - ++$lineno; - if ( ! preg_match( $pat1, $line, $m ) ) { - continue; - } - - $pre = $wgContLang->truncate( $m[1], -$contextchars, '...' ); - - if ( count( $m ) < 3 ) { - $post = ''; - } else { - $post = $wgContLang->truncate( $m[3], $contextchars, '...' ); - } - - $found = $m[2]; - - $line = htmlspecialchars( $pre . $found . $post ); - $pat2 = '/(' . implode( '|', $this->searchTerms ) . ")/i"; - $line = preg_replace( $pat2, - "\\1", $line ); - - $wgOut->addHTML( "
    {$lineno}: {$line}\n" ); - } - $wgOut->addHTML( "
    • \n" ); + /** + * Create or update the search index record for the given page. + * Title and text should be pre-processed. + * + * @param int $id + * @param string $title + * @param string $text + * @abstract + */ + function update( $id, $title, $text ) { + // no-op } - function getNearMatch() { - # Exact match? No need to look further. - $title = Title::newFromText( $this->rawText ); - if ( $title->getNamespace() == NS_SPECIAL || 0 != $title->getArticleID() ) { - return $title; - } - - # Now try all lower case (i.e. first letter capitalized) - # - $title = Title::newFromText( strtolower( $this->rawText ) ); - if ( 0 != $title->getArticleID() ) { - return $title; - } - - # Now try capitalized string - # - $title = Title::newFromText( ucwords( strtolower( $this->rawText ) ) ); - if ( 0 != $title->getArticleID() ) { - return $title; - } - - # Now try all upper case - # - $title = Title::newFromText( strtoupper( $this->rawText ) ); - if ( 0 != $title->getArticleID() ) { - return $title; - } + /** + * Update a search index record's title only. + * Title should be pre-processed. + * + * @param int $id + * @param string $title + * @abstract + */ + function updateTitle( $id, $title ) { + // no-op + } +} - # Entering an IP address goes to the contributions page - if ( preg_match( '/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/', $this->rawText ) ) { - $title = Title::makeTitle( NS_SPECIAL, "Contributions/" . $this->rawText ); - return $title; - } - - return NULL; +/** @package MediaWiki */ +class SearchResultSet { + /** + * Fetch an array of regular expression fragments for matching + * the search terms as parsed by this engine in a text extract. + * + * @return array + * @access public + * @abstract + */ + function termMatches() { + return array(); } - function goResult() { - global $wgOut, $wgGoToEdit; - global $wgDisableTextSearch; - $fname = 'SearchEngine::goResult'; - - # Try to go to page as entered. - # - $t = Title::newFromText( $this->rawText ); + function numRows() { + return 0; + } - # If the string cannot be used to create a title - if( is_null( $t ) ){ - $this->showResults(); - return; - } + /** + * Return true if results are included in this result set. + * @return bool + * @abstract + */ + function hasResults() { + return false; + } - # If there's an exact or very near match, jump right there. - $t = $this->getNearMatch(); - if( !is_null( $t ) ) { - $wgOut->redirect( $t->getFullURL() ); - return; - } - - # No match, generate an edit URL - $t = Title::newFromText( $this->rawText ); - - # If the feature is enabled, go straight to the edit page - if ( $wgGoToEdit ) { - $wgOut->redirect( $t->getFullURL( 'action=edit' ) ); - return; - } - - if( $t ) { - $editurl = $t->escapeLocalURL( 'action=edit' ); - } else { - $editurl = ''; # ?? - } - $wgOut->addHTML( '

    ' . wfMsg('nogomatch', $editurl ) . "

    \n" ); - - # Try a fuzzy title search - $anyhit = false; - global $wgDisableFuzzySearch; - if(! $wgDisableFuzzySearch ){ - foreach( array(NS_MAIN, NS_PROJECT, NS_USER, NS_IMAGE, NS_MEDIAWIKI) as $namespace){ - $anyhit |= SearchEngine::doFuzzyTitleSearch( $this->rawText, $namespace ); - } - } - - if( ! $anyhit ){ - return $this->showResults(); - } + /** + * Some search modes return a total hit count for the query + * in the entire article database. This may include pages + * in namespaces that would not be matched on the given + * settings. + * + * Return null if no total hits number is supported. + * + * @return int + * @access public + */ + function getTotalHits() { + return null; } /** - * @static + * Some search modes return a suggested alternate term if there are + * no exact hits. Returns true if there is one on this set. + * + * @return bool + * @access public */ - function doFuzzyTitleSearch( $search, $namespace ){ - global $wgContLang, $wgOut; - - $this->setupPage(); - - $sstr = ucfirst($search); - $sstr = str_replace(' ', '_', $sstr); - $fuzzymatches = SearchEngine::fuzzyTitles( $sstr, $namespace ); - $fuzzymatches = array_slice($fuzzymatches, 0, 10); - $slen = strlen( $search ); - $wikitext = ''; - foreach($fuzzymatches as $res){ - $t = str_replace('_', ' ', $res[1]); - $tfull = $wgContLang->getNsText( $namespace ) . ":$t|$t"; - if( $namespace == NS_MAIN ) - $tfull = $t; - $distance = $res[0]; - $closeness = (strlen( $search ) - $distance) / strlen( $search ); - $percent = intval( $closeness * 100 ) . '%'; - $stars = str_repeat('*', ceil(5 * $closeness) ); - $wikitext .= "* [[$tfull]] $percent ($stars)\n"; - } - if( $wikitext ){ - if( $namespace != NS_MAIN ) - $wikitext = '=== ' . $wgContLang->getNsText( $namespace ) . " ===\n" . $wikitext; - $wgOut->addWikiText( $wikitext ); - return true; - } + function hasSuggestion() { return false; } /** - * @static + * Some search modes return a suggested alternate term if there are + * no exact hits. Check hasSuggestion() first. + * + * @return string + * @access public */ - function fuzzyTitles( $sstr, $namespace = NS_MAIN ){ - $span = 0.10; // weed on title length before doing levenshtein. - $tolerance = 0.35; // allowed percentage of erronous characters - $slen = strlen($sstr); - $tolerance_count = ceil($tolerance * $slen); - $spanabs = ceil($slen * (1 + $span)) - $slen; - # print "Word: $sstr, len = $slen, range = [$min, $max], tolerance_count = $tolerance_count
    \n"; - $result = array(); - $cnt = 0; - for( $i=0; $i <= $spanabs; $i++ ){ - $titles = SearchEngine::getTitlesByLength( $slen + $i, $namespace ); - if( $i != 0) { - $titles = array_merge($titles, SearchEngine::getTitlesByLength( $slen - $i, $namespace ) ); - } - foreach($titles as $t){ - $d = levenshtein($sstr, $t); - if($d < $tolerance_count) - $result[] = array($d, $t); - $cnt++; - } - } - usort($result, 'SearchEngine_pcmp'); - return $result; + function getSuggestion() { + return ''; } /** - * static + * Fetches next search result, or false. + * @return SearchResult + * @access public + * @abstract */ - function getTitlesByLength($aLength, $aNamespace = 0){ - global $wgMemc, $wgDBname; - $fname = 'SearchEngin::getTitlesByLength'; - - // to avoid multiple costly SELECTs in case of no memcached - if( $this->allTitles ){ - if( isset( $this->allTitles[$aLength][$aNamespace] ) ){ - return $this->allTitles[$aLength][$aNamespace]; - } else { - return array(); - } - } + function next() { + return false; + } +} - $mkey = "$wgDBname:titlesbylength:$aLength:$aNamespace"; - $mkeyts = "$wgDBname:titlesbylength:createtime"; - $ts = $wgMemc->get( $mkeyts ); - $result = $wgMemc->get( $mkey ); +/** @package MediaWiki */ +class SearchResult { + function SearchResult( $row ) { + $this->mTitle = Title::makeTitle( $row->page_namespace, $row->page_title ); + } - if( time() - $ts < 3600 ){ - // note: in case of insufficient memcached space, we return - // an empty list instead of starting to hit the DB. - return is_array( $result ) ? $result : array(); - } + /** + * @return Title + * @access public + */ + function getTitle() { + return $this->mTitle; + } - $wgMemc->set( $mkeyts, time() ); - - $res = $this->db->select( 'cur', array( 'cur_title', 'cur_namespace' ), false, $fname ); - $titles = array(); // length, ns, [titles] - while( $obj = $this->db->fetchObject( $res ) ){ - $title = $obj->cur_title; - $ns = $obj->cur_namespace; - $len = strlen( $title ); - $titles[$len][$ns][] = $title; - } - foreach($titles as $length => $length_arr){ - foreach($length_arr as $ns => $title_arr){ - $mkey = "$wgDBname:titlesbylength:$length:$ns"; - $wgMemc->set( $mkey, $title_arr, 3600 * 24 ); - } - } - $this->allTitles = $titles; - if( isset( $titles[$aLength][$aNamespace] ) ) - return $titles[$aLength][$aNamespace]; - else - return array(); + /** + * @return double or null if not supported + */ + function getScore() { + return null; } } /** - * @access private - * @static + * @package MediaWiki */ -function SearchEngine_pcmp($a, $b){ return $a[0] - $b[0]; } - +class SearchEngineDummy { + function search( $term ) { + return null; + } + function setLimitOffset($l, $o) {} + function legalSearchChars() {} + function update() {} + function setnamespaces() {} + function searchtitle() {} + function searchtext() {} +} ?>