<?php
/**
+ * @file
* @todo document
- * @package MediaWiki
- * @subpackage Maintenance
+ * @ingroup Maintenance
*/
/** */
function convertLinks() {
global $wgDBtype;
- if( $wgDBtype == 'PostgreSQL' ) {
- print "Links table already ok on PostgreSQL.\n";
+ if( $wgDBtype == 'postgres' ) {
+ wfOut( "Links table already ok on Postgres.\n" );
return;
}
-
- print "Converting links table to ID-ID...\n";
-
+
+ wfOut( "Converting links table to ID-ID...\n" );
+
global $wgLang, $wgDBserver, $wgDBadminuser, $wgDBadminpassword, $wgDBname;
global $noKeys, $logPerformance, $fh;
-
- $numRows = $tuplesAdded = $numBadLinks = $curRowsRead = 0; #counters etc
+
+ $tuplesAdded = $numBadLinks = $curRowsRead = 0; #counters etc
$totalTuplesInserted = 0; # total tuples INSERTed into links_temp
$reportCurReadProgress = true; #whether or not to give progress reports while reading IDs from cur table
$logPerformance = false; # output performance data to a file
$perfLogFilename = "convLinksPerf.txt";
#--------------------------------------------------------------------
-
- $dbw =& wfGetDB( DB_MASTER );
- extract( $dbw->tableNames( 'cur', 'links', 'links_temp', 'links_backup' ) );
- $res = $dbw->query( "SELECT l_from FROM $links LIMIT 1" );
+ $dbw = wfGetDB( DB_MASTER );
+ list ($cur, $links, $links_temp, $links_backup) = $dbw->tableNamesN( 'cur', 'links', 'links_temp', 'links_backup' );
+
+ // Get database-agnostic limit clause
+ $sql_limit = $dbw->limitResult( "SELECT l_from FROM $links", 1 );
+ $res = $dbw->query( $sql_limit );
if ( $dbw->fieldType( $res, 0 ) == "int" ) {
- print "Schema already converted\n";
+ wfOut( "Schema already converted\n" );
return;
}
-
+
$res = $dbw->query( "SELECT COUNT(*) AS count FROM $links" );
$row = $dbw->fetchObject($res);
$numRows = $row->count;
$dbw->freeResult( $res );
if ( $numRows == 0 ) {
- print "Updating schema (no rows to convert)...\n";
+ wfOut( "Updating schema (no rows to convert)...\n" );
createTempTable();
} else {
if ( $logPerformance ) { $fh = fopen ( $perfLogFilename, "w" ); }
$baseTime = $startTime = getMicroTime();
# Create a title -> cur_id map
- print "Loading IDs from $cur table...\n";
+ wfOut( "Loading IDs from $cur table...\n" );
performanceLog ( "Reading $numRows rows from cur table...\n" );
performanceLog ( "rows read vs seconds elapsed:\n" );
-
+
$dbw->bufferResults( false );
$res = $dbw->query( "SELECT cur_namespace,cur_title,cur_id FROM $cur" );
$ids = array();
if ($reportCurReadProgress) {
if (($curRowsRead % $curReadReportInterval) == 0) {
performanceLog( $curRowsRead . " " . (getMicroTime() - $baseTime) . "\n" );
- print "\t$curRowsRead rows of $cur table read.\n";
+ wfOut( "\t$curRowsRead rows of $cur table read.\n" );
}
}
}
$dbw->freeResult( $res );
$dbw->bufferResults( true );
- print "Finished loading IDs.\n\n";
+ wfOut( "Finished loading IDs.\n\n" );
performanceLog( "Took " . (getMicroTime() - $baseTime) . " seconds to load IDs.\n\n" );
#--------------------------------------------------------------------
createTempTable();
performanceLog( "Resetting timer.\n\n" );
$baseTime = getMicroTime();
- print "Processing $numRows rows from $links table...\n";
+ wfOut( "Processing $numRows rows from $links table...\n" );
performanceLog( "Processing $numRows rows from $links table...\n" );
performanceLog( "rows inserted vs seconds elapsed:\n" );
-
+
for ($rowOffset = $initialRowOffset; $rowOffset < $numRows; $rowOffset += $linksConvInsertInterval) {
- $sqlRead = "SELECT * FROM $links ".$dbw->limitResult($linksConvInsertInterval,$rowOffset);
+ $sqlRead = "SELECT * FROM $links ";
+ $sqlRead = $dbw->limitResult($sqlRead, $linksConvInsertInterval,$rowOffset);
$res = $dbw->query($sqlRead);
if ( $noKeys ) {
$sqlWrite = array("INSERT INTO $links_temp (l_from,l_to) VALUES ");
} else {
$sqlWrite = array("INSERT IGNORE INTO $links_temp (l_from,l_to) VALUES ");
}
-
+
$tuplesAdded = 0; # no tuples added to INSERT yet
while ( $row = $dbw->fetchObject($res) ) {
- $fromTitle = $row->l_from;
+ $fromTitle = $row->l_from;
if ( array_key_exists( $fromTitle, $ids ) ) { # valid title
$from = $ids[$fromTitle];
$to = $row->l_to;
$sqlWrite[] = ",";
}
$sqlWrite[] = "($from,$to)";
- $tuplesAdded++;
+ $tuplesAdded++;
} else { # invalid title
$numBadLinks++;
}
}
$dbw->freeResult($res);
- #print "rowOffset: $rowOffset\ttuplesAdded: $tuplesAdded\tnumBadLinks: $numBadLinks\n";
+ #wfOut( "rowOffset: $rowOffset\ttuplesAdded: $tuplesAdded\tnumBadLinks: $numBadLinks\n" );
if ( $tuplesAdded != 0 ) {
if ($reportLinksConvProgress) {
- print "Inserting $tuplesAdded tuples into $links_temp...";
+ wfOut( "Inserting $tuplesAdded tuples into $links_temp..." );
}
$dbw->query( implode("",$sqlWrite) );
$totalTuplesInserted += $tuplesAdded;
if ($reportLinksConvProgress)
- print " done. Total $totalTuplesInserted tuples inserted.\n";
+ wfOut( " done. Total $totalTuplesInserted tuples inserted.\n" );
performanceLog( $totalTuplesInserted . " " . (getMicroTime() - $baseTime) . "\n" );
}
}
- print "$totalTuplesInserted valid titles and $numBadLinks invalid titles were processed.\n\n";
+ wfOut( "$totalTuplesInserted valid titles and $numBadLinks invalid titles were processed.\n\n" );
performanceLog( "$totalTuplesInserted valid titles and $numBadLinks invalid titles were processed.\n" );
performanceLog( "Total execution time: " . (getMicroTime() - $startTime) . " seconds.\n" );
if ( $logPerformance ) { fclose ( $fh ); }
if ( $overwriteLinksTable ) {
$dbConn = Database::newFromParams( $wgDBserver, $wgDBadminuser, $wgDBadminpassword, $wgDBname );
if (!($dbConn->isOpen())) {
- print "Opening connection to database failed.\n";
+ wfOut( "Opening connection to database failed.\n" );
return;
}
# Check for existing links_backup, and delete it if it exists.
- print "Dropping backup links table if it exists...";
+ wfOut( "Dropping backup links table if it exists..." );
$dbConn->query( "DROP TABLE IF EXISTS $links_backup", DB_MASTER);
- print " done.\n";
-
+ wfOut( " done.\n" );
+
# Swap in the new table, and move old links table to links_backup
- print "Swapping tables '$links' to '$links_backup'; '$links_temp' to '$links'...";
+ wfOut( "Swapping tables '$links' to '$links_backup'; '$links_temp' to '$links'..." );
$dbConn->query( "RENAME TABLE links TO $links_backup, $links_temp TO $links", DB_MASTER );
- print " done.\n\n";
-
+ wfOut( " done.\n\n" );
+
$dbConn->close();
- print "Conversion complete. The old table remains at $links_backup;\n";
- print "delete at your leisure.\n";
+ wfOut( "Conversion complete. The old table remains at $links_backup;\n" );
+ wfOut( "delete at your leisure.\n" );
} else {
- print "Conversion complete. The converted table is at $links_temp;\n";
- print "the original links table is unchanged.\n";
+ wfOut( "Conversion complete. The converted table is at $links_temp;\n" );
+ wfOut( "the original links table is unchanged.\n" );
}
}
global $wgDBserver, $wgDBadminuser, $wgDBadminpassword, $wgDBname;
global $noKeys;
$dbConn = Database::newFromParams( $wgDBserver, $wgDBadminuser, $wgDBadminpassword, $wgDBname );
-
+
if (!($dbConn->isOpen())) {
- print "Opening connection to database failed.\n";
+ wfOut( "Opening connection to database failed.\n" );
return;
}
$links_temp = $dbConn->tableName( 'links_temp' );
-
- print "Dropping temporary links table if it exists...";
+
+ wfOut( "Dropping temporary links table if it exists..." );
$dbConn->query( "DROP TABLE IF EXISTS $links_temp");
- print " done.\n";
-
- print "Creating temporary links table...";
+ wfOut( " done.\n" );
+
+ wfOut( "Creating temporary links table..." );
if ( $noKeys ) {
$dbConn->query( "CREATE TABLE $links_temp ( " .
"l_from int(8) unsigned NOT NULL default '0', " .
"UNIQUE KEY l_from(l_from,l_to), " .
"KEY (l_to))");
}
- print " done.\n\n";
+ wfOut( " done.\n\n" );
}
function performanceLog( $text ) {
list($usec, $sec) = explode(" ", microtime());
return ((float)$usec + (float)$sec);
}
-
-
-
-?>
scripts.mit.edu / autoinstalls / mediawiki.git / blobdiff