function getSQL() {
return "SELECT 'sample' as type, 0 as namespace, 'Sample result' as title, 42 as value";
}
-
+
# Override to sort by increasing values
function sortDescending() {
return true;
function getOrderLimit( $offset, $limit ) {
return " ORDER BY value " .
($this->sortDescending() ? "DESC" : "")
- . " LIMIT {$offset}, {$limit}";
+ . wfLimitResult($limit,$offset);
+ }
+
+ function getOrder() {
+ return " ORDER BY value " .
+ ($this->sortDescending() ? "DESC" : "");
}
# Is this query expensive (for some definition of expensive)? Then we
function formatResult( $skin, $result ) {
return "";
}
-
+
# This is the actual workhorse. It does everything needed to make a
# real, honest-to-gosh query page.
-
+
function doQuery( $offset, $limit ) {
global $wgUser, $wgOut, $wgLang, $wgRequest;
global $wgMiserMode;
$sname = $this->getName();
$fname = get_class($this) . "::doQuery";
- $sql = $this->getSQL( $offset, $limit );
+ $sql = $this->getSQL();
+ $dbr =& wfGetDB( DB_SLAVE );
+ $dbw =& wfGetDB( DB_MASTER );
+ $querycache = $dbr->tableName( 'querycache' );
$wgOut->setSyndicated( true );
-
+ $res = false;
+
if ( $this->isExpensive() ) {
- $type = wfStrencode( $sname );
$recache = $wgRequest->getBool( "recache" );
if( $recache ) {
# Clear out any old cached data
- $res = wfQuery( "DELETE FROM querycache WHERE qc_type='$type'", DB_WRITE, $fname );
+ $dbw->delete( 'querycache', array( 'qc_type' => $sname ), $fname );
- # Save results into the querycache table
+ # Do query on the (possibly out of date) slave server
$maxstored = 1000;
- $res = wfQuery(
- "INSERT INTO querycache(qc_type,qc_namespace,qc_title,qc_value) " .
- $this->getSQL() .
- $this->getOrderLimit( 0, $maxstored ),
- DB_WRITE, $fname );
+ $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 ) . ")";
+ }
+
+ # Save results into the querycache table on the master
+ $dbw->query( $insertSql, $fname );
+
+ # 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 );
+ }
}
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'";
+ FROM $querycache WHERE qc_type='$type'";
}
if( $wgMiserMode ) {
$wgOut->addWikiText( wfMsg( "perfcached" ) );
}
}
+ if ( $res === false ) {
+ $res = $dbr->query( $sql . $this->getOrder() .
+ $dbr->limitResult( $limit,$offset ), $fname );
+ $num = $dbr->numRows($res);
+ }
+
- $res = wfQuery( $sql . $this->getOrderLimit( $offset, $limit ), DB_READ, $fname );
-
- $num = wfNumRows($res);
-
$sk = $wgUser->getSkin( );
$top = wfShowingResults( $offset, $num);
# often disable 'next' link when we reach the end
if($num < $limit) { $atend = true; } else { $atend = false; }
-
+
$sl = wfViewPrevNext( $offset, $limit , $wgLang->specialPage( $sname ), "" ,$atend );
$wgOut->addHTML( "<br />{$sl}</p>\n" );
- $s = "<ol start='" . ( $offset + 1 ) . "'>";
- while ( $obj = wfFetchObject( $res ) ) {
+ $s = "<ol start='" . ( $offset + 1 ) . "' class='special'>";
+ # Only read at most $num rows, because $res may contain the whole 1000
+ for ( $i = 0; $i < $num && $obj = $dbr->fetchObject( $res ); $i++ ) {
$format = $this->formatResult( $sk, $obj );
- $s .= "<li>{$format}</li>\n";
+ $attr = ( $obj->usepatrol && $obj->patrolled == 0 ) ? ' class="not_patrolled"' : '';
+ $s .= "<li{$attr}>{$format}</li>\n";
}
- wfFreeResult( $res );
+ $dbr->freeResult( $res );
$s .= "</ol>";
$wgOut->addHTML( $s );
$wgOut->addHTML( "<p>{$sl}</p>\n" );
}
-
+
# Similar to above, but packaging in a syndicated feed instead of a web page
function doFeed( $class = "" ) {
global $wgFeedClasses;
$this->feedDesc(),
$this->feedUrl() );
$feed->outHeader();
-
- $sql = $this->getSQL( 0, 50 );
- $res = wfQuery( $sql, DB_READ, "QueryPage::doFeed" );
- while( $obj = wfFetchObject( $res ) ) {
+
+ $dbr =& wfGetDB( DB_SLAVE );
+ $sql = $this->getSQL() . $this->getOrder().$dbr->limitResult( 50, 0 );
+ $res = $dbr->query( $sql, "QueryPage::doFeed" );
+ while( $obj = $dbr->fetchObject( $res ) ) {
$item = $this->feedResult( $obj );
if( $item ) $feed->outItem( $item );
}
- wfFreeResult( $res );
+ $dbr->freeResult( $res );
$feed->outFooter();
return true;
} else {
$date = "";
}
-
+
$comments = "";
if( $title ) {
$talkpage = $title->getTalkPage();
$comments = $talkpage->getFullURL();
}
-
+
return new FeedItem(
$title->getText(),
$this->feedItemDesc( $row ),
return NULL;
}
}
-
+
function feedItemDesc( $row ) {
$text = "";
if( isset( $row->comment ) ) {
} else {
$text = "";
}
-
+
if( isset( $row->text ) ) {
$text = "<p>" . htmlspecialchars( wfMsg( "summary" ) ) . ": " . $text . "</p>\n<hr />\n<div>" .
nl2br( htmlspecialchars( $row->text ) ) . "</div>";;
}
return $text;
}
-
+
function feedItemAuthor( $row ) {
if( isset( $row->user_text ) ) {
return $row->user_text;
return "";
}
}
-
+
function feedTitle() {
global $wgLanguageCode, $wgSitename, $wgLang;
$page = SpecialPage::getPage( $this->getName() );
$desc = $page->getDescription();
return "$wgSitename - $desc [$wgLanguageCode]";
}
-
+
function feedDesc() {
return wfMsg( "fromwikipedia" );
}
-
+
function feedUrl() {
global $wgLang;
$title = Title::MakeTitle( NS_SPECIAL, $this->getName() );
dépôts / lhc / web / wiklou.git / blobdiff