X-Git-Url: https://git.heureux-cyclage.org/?a=blobdiff_plain;f=includes%2FQueryPage.php;h=06710b6de0aea7e6e5f10c77d6275d20c3ff891f;hb=07a2fee8a82017d34f2c5120ce2f3863053003d9;hp=57d412df61479b59b8338800e686d16472205e9c;hpb=aeeec5397bb8d3b6fa9ad407a5fd7a102ef7f70f;p=lhc%2Fweb%2Fwiklou.git diff --git a/includes/QueryPage.php b/includes/QueryPage.php index 57d412df61..06710b6de0 100644 --- a/includes/QueryPage.php +++ b/includes/QueryPage.php @@ -1,168 +1,458 @@ listoutput; + * + * @param bool $bool + */ + function setListoutput( $bool ) { + $this->listoutput = $bool; + } + /** + * Subclasses return their name here. Make sure the name is also + * specified in SpecialPage.php and in Language.php as a language message + * param. + */ function getName() { - return ""; + return ''; } - # Subclasses return an SQL query here. - # - # Note that the query itself should return the following four columns: - # 'type' (your special page's name), 'namespace', 'title', and 'value' - # *in that order*. 'value' is used for sorting. These may be stored in - # the querycache table for expensive queries, and that cached data will - # be returned sometimes, so the presence of extra fields can't be - # relied upon. - # - # Don't include an ORDER or LIMIT clause, this will be added. + /** + * Return title object representing this page + * + * @return Title + */ + function getTitle() { + return SpecialPage::getTitleFor( $this->getName() ); + } + /** + * Subclasses return an SQL query here. + * + * Note that the query itself should return the following four columns: + * 'type' (your special page's name), 'namespace', 'title', and 'value' + * *in that order*. 'value' is used for sorting. + * + * These may be stored in the querycache table for expensive queries, + * and that cached data will be returned sometimes, so the presence of + * extra fields can't be relied upon. The cached 'value' column will be + * an integer; non-numeric values are useful only for sorting the initial + * query. + * + * Don't include an ORDER or LIMIT clause, this will be added. + */ function getSQL() { return "SELECT 'sample' as type, 0 as namespace, 'Sample result' as title, 42 as value"; } - # Override to sort by increasing values + /** + * Override to sort by increasing values + */ function sortDescending() { return true; } - # Don't override this unless you're darn sure. - function getOrderLimit( $offset, $limit ) { - return " ORDER BY value " . - ($this->sortDescending() ? "DESC" : "") - . wfLimitResult($limit,$offset); - } - function getOrder() { - return " ORDER BY value " . - ($this->sortDescending() ? "DESC" : ""); + return ' ORDER BY value ' . + ($this->sortDescending() ? 'DESC' : ''); } - # Is this query expensive (for some definition of expensive)? Then we - # don't let it run in miser mode. $wgDisableQueryPages causes all query - # pages to be declared expensive. Some query pages are always expensive. + /** + * Is this query expensive (for some definition of expensive)? Then we + * don't let it run in miser mode. $wgDisableQueryPages causes all query + * pages to be declared expensive. Some query pages are always expensive. + */ function isExpensive( ) { global $wgDisableQueryPages; return $wgDisableQueryPages; } - # Formats the results of the query for display. The skin is the current - # skin; you can use it for making links. The result is a single row of - # result data. You should be able to grab SQL results off of it. + /** + * Whether or not the output of the page in question is retrived from + * the database cache. + * + * @return bool + */ + function isCached() { + global $wgMiserMode; + + return $this->isExpensive() && $wgMiserMode; + } + + /** + * Sometime we dont want to build rss / atom feeds. + */ + function isSyndicated() { + return true; + } + /** + * Formats the results of the query for display. The skin is the current + * skin; you can use it for making links. The result is a single row of + * result data. You should be able to grab SQL results off of it. + * If the function return "false", the line output will be skipped. + */ function formatResult( $skin, $result ) { - return ""; + return ''; } - # This is the actual workhorse. It does everything needed to make a - # real, honest-to-gosh query page. + /** + * The content returned by this function will be output before any result + */ + function getPageHeader( ) { + return ''; + } - function doQuery( $offset, $limit ) { - global $wgUser, $wgOut, $wgLang, $wgRequest; - global $wgMiserMode; + /** + * If using extra form wheely-dealies, return a set of parameters here + * as an associative array. They will be encoded and added to the paging + * links (prev/next/lengths). + * @return array + */ + function linkParameters() { + return array(); + } + + /** + * Some special pages (for example SpecialListusers) might not return the + * current object formatted, but return the previous one instead. + * Setting this to return true, will call one more time wfFormatResult to + * be sure that the very last result is formatted and shown. + */ + function tryLastResult( ) { + return false; + } + + /** + * Clear the cache and save new results + */ + function recache( $limit, $ignoreErrors = true ) { + $fname = get_class($this) . '::recache'; + $dbw = wfGetDB( DB_MASTER ); + $dbr = wfGetDB( DB_SLAVE, array( $this->getName(), 'QueryPage::recache', 'vslow' ) ); + if ( !$dbw || !$dbr ) { + return false; + } - $sname = $this->getName(); - $fname = get_class($this) . "::doQuery"; - $sql = $this->getSQL(); - $dbr =& wfGetDB( DB_SLAVE ); - $dbw =& wfGetDB( DB_MASTER ); $querycache = $dbr->tableName( 'querycache' ); - $wgOut->setSyndicated( true ); - $res = false; - - if ( $this->isExpensive() ) { - $recache = $wgRequest->getBool( "recache" ); - if( $recache ) { - # Clear out any old cached data - $dbw->delete( 'querycache', array( 'qc_type' => $sname ), $fname ); - - # Do query on the (possibly out of date) slave server - $maxstored = 1000; - $res = $dbr->query( $sql . $this->getOrder() . $dbr->limitResult( $maxstored,0 ), $fname ); - - # Fetch results - $insertSql = "INSERT INTO $querycache (qc_type,qc_namespace,qc_title,qc_value) VALUES "; - $first = true; - while ( $row = $dbr->fetchObject( $res ) ) { - if ( $first ) { - $first = false; - } else { - $insertSql .= ","; - } - $insertSql .= "(" . - $dbw->addQuotes( $row->type ) . "," . - $dbw->addQuotes( $row->namespace ) . "," . - $dbw->addQuotes( $row->title ) . "," . - $dbw->addQuotes( $row->value ) . ")"; + if ( $ignoreErrors ) { + $ignoreW = $dbw->ignoreErrors( true ); + $ignoreR = $dbr->ignoreErrors( true ); + } + + # Clear out any old cached data + $dbw->delete( 'querycache', array( 'qc_type' => $this->getName() ), $fname ); + # Do query + $sql = $this->getSQL() . $this->getOrder(); + if ($limit !== false) + $sql = $dbr->limitResult($sql, $limit, 0); + $res = $dbr->query($sql, $fname); + $num = false; + if ( $res ) { + $num = $dbr->numRows( $res ); + # Fetch results + $insertSql = "INSERT INTO $querycache (qc_type,qc_namespace,qc_title,qc_value) VALUES "; + $first = true; + while ( $res && $row = $dbr->fetchObject( $res ) ) { + if ( $first ) { + $first = false; + } else { + $insertSql .= ','; + } + if ( isset( $row->value ) ) { + $value = $row->value; + } else { + $value = ''; } - # Save results into the querycache table on the master - $dbw->query( $insertSql, $fname ); + $insertSql .= '(' . + $dbw->addQuotes( $row->type ) . ',' . + $dbw->addQuotes( $row->namespace ) . ',' . + $dbw->addQuotes( $row->title ) . ',' . + $dbw->addQuotes( $value ) . ')'; + } - # Set result pointer to allow reading for display - $numRows = $dbr->numRows( $res ); - if ( $numRows <= $offset ) { - $num = 0; - } else { - $dbr->dataSeek( $res, $offset ); - $num = max( $limit, $numRows - $offset ); + # Save results into the querycache table on the master + if ( !$first ) { + if ( !$dbw->query( $insertSql, $fname ) ) { + // Set result to false to indicate error + $dbr->freeResult( $res ); + $res = false; } } - if( $wgMiserMode || $recache ) { - $type = $dbr->strencode( $sname ); - $sql = - "SELECT qc_type as type, qc_namespace as namespace,qc_title as title, qc_value as value - FROM $querycache WHERE qc_type='$type'"; + if ( $res ) { + $dbr->freeResult( $res ); } - if( $wgMiserMode ) { - $wgOut->addWikiText( wfMsg( "perfcached" ) ); + if ( $ignoreErrors ) { + $dbw->ignoreErrors( $ignoreW ); + $dbr->ignoreErrors( $ignoreR ); } + + # Update the querycache_info record for the page + $dbw->delete( 'querycache_info', array( 'qci_type' => $this->getName() ), $fname ); + $dbw->insert( 'querycache_info', array( 'qci_type' => $this->getName(), 'qci_timestamp' => $dbw->timestamp() ), $fname ); + } - if ( $res === false ) { - $res = $dbr->query( $sql . $this->getOrder() . - $dbr->limitResult( $limit,$offset ), $fname ); - $num = $dbr->numRows($res); - } + return $num; + } + /** + * This is the actual workhorse. It does everything needed to make a + * real, honest-to-gosh query page. + * + * @param $offset database query offset + * @param $limit database query limit + * @param $shownavigation show navigation like "next 200"? + */ + function doQuery( $offset, $limit, $shownavigation=true ) { + global $wgUser, $wgOut, $wgLang, $wgContLang; - $sk = $wgUser->getSkin( ); + $this->offset = $offset; + $this->limit = $limit; - $top = wfShowingResults( $offset, $num); - $wgOut->addHTML( "
{$top}\n" );
+ $sname = $this->getName();
+ $fname = get_class($this) . '::doQuery';
+ $dbr = wfGetDB( DB_SLAVE );
- # often disable 'next' link when we reach the end
- if($num < $limit) { $atend = true; } else { $atend = false; }
+ $wgOut->setSyndicated( $this->isSyndicated() );
- $sl = wfViewPrevNext( $offset, $limit , $wgLang->specialPage( $sname ), "" ,$atend );
- $wgOut->addHTML( "
{$sl}
{$sl}
\n" ); + + $sql .= $this->getOrder(); + $sql = $dbr->limitResult($sql, $limit, $offset); + $res = $dbr->query( $sql ); + $num = $dbr->numRows($res); + + $this->preprocessResults( $dbr, $res ); + + $wgOut->addHtml( XML::openElement( 'div', array('class' => 'mw-spcontent') ) ); + + # Top header and navigation + if( $shownavigation ) { + $wgOut->addHtml( $this->getPageHeader() ); + if( $num > 0 ) { + $wgOut->addHtml( '' . wfShowingResults( $offset, $num ) . '
' ); + # Disable the "next" link when we reach the end + $paging = wfViewPrevNext( $offset, $limit, $wgContLang->specialPage( $sname ), + wfArrayToCGI( $this->linkParameters() ), ( $num < $limit ) ); + $wgOut->addHtml( '' . $paging . '
' ); + } else { + # No results to show, so don't bother with "showing X of Y" etc. + # -- just let the user know and give up now + $wgOut->addHtml( '' . wfMsgHtml( 'specialpage-empty' ) . '
' ); + $wgOut->addHtml( XML::closeElement( 'div' ) ); + return; + } + } + + # The actual results; specialist subclasses will want to handle this + # with more than a straight list, so we hand them the info, plus + # an OutputPage, and let them get on with it + $this->outputResults( $wgOut, + $wgUser->getSkin(), + $dbr, # Should use a ResultWrapper for this + $res, + $dbr->numRows( $res ), + $offset ); + + # Repeat the paging links at the bottom + if( $shownavigation ) { + $wgOut->addHtml( '' . $paging . '
' ); + } + + $wgOut->addHtml( XML::closeElement( 'div' ) ); + + return $num; + } + + /** + * Format and output report results using the given information plus + * OutputPage + * + * @param OutputPage $out OutputPage to print to + * @param Skin $skin User skin to use + * @param Database $dbr Database (read) connection to use + * @param int $res Result pointer + * @param int $num Number of available result rows + * @param int $offset Paging offset + */ + protected function outputResults( $out, $skin, $dbr, $res, $num, $offset ) { + global $wgContLang; + + if( $num > 0 ) { + $html = array(); + if( !$this->listoutput ) + $html[] = $this->openList( $offset ); + + # $res might contain the whole 1,000 rows, so we read up to + # $num [should update this to use a Pager] + for( $i = 0; $i < $num && $row = $dbr->fetchObject( $res ); $i++ ) { + $line = $this->formatResult( $skin, $row ); + if( $line ) { + $attr = ( isset( $row->usepatrol ) && $row->usepatrol && $row->patrolled == 0 ) + ? ' class="not-patrolled"' + : ''; + $html[] = $this->listoutput + ? $line + : "" . htmlspecialchars( wfMsg( "summary" ) ) . ": " . $text . "
\n