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<?php
define( 'REPORTING_INTERVAL', 100 );
if ( !defined( 'MEDIAWIKI' ) ) {
$optionsWithArgs = array( 'm' );
require_once( '../commandLine.inc' );
require_once( 'includes/ExternalStoreDB.php' );
resolveStubs();
}
/**
* Convert history stubs that point to an external row to direct
* external pointers
*/
function resolveStubs() {
$fname = 'resolveStubs';
$dbr =& wfGetDB( DB_SLAVE );
$dbw =& wfGetDB( DB_MASTER );
$maxID = $dbr->selectField( 'text', 'MAX(old_id)', false, $fname );
$blockSize = 10000;
$numBlocks = intval( $maxID / $blockSize ) + 1;
for ( $b = 0; $b < $numBlocks; $b++ ) {
wfWaitForSlaves( 5 );
printf( "%5.2f%%\n", $b / $numBlocks * 100 );
$start = intval($maxID / $numBlocks) * $b + 1;
$end = intval($maxID / $numBlocks) * ($b + 1);
$stubs = array();
$flagsArray = array();
$res = $dbr->select( 'text', array( 'old_id', 'old_text', 'old_flags' ),
"old_id>=$start AND old_id<=$end " .
# Using a more restrictive flag set for now, until I do some more analysis -- TS
#"AND old_flags LIKE '%object%' AND old_flags NOT LIKE '%external%' ".
"AND old_flags='object' " .
"AND old_text LIKE 'O:15:\"historyblobstub\"%'", $fname );
while ( $row = $dbr->fetchObject( $res ) ) {
resolveStub( $row->old_id, $row->old_text, $row->old_flags );
}
$dbr->freeResult( $res );
}
print "100%\n";
}
/**
* Resolve a history stub
*/
function resolveStub( $id, $stubText, $flags ) {
$fname = 'resolveStub';
$stub = unserialize( $stubText );
$flags = explode( ',', $flags );
$dbr =& wfGetDB( DB_SLAVE );
$dbw =& wfGetDB( DB_MASTER );
if ( strtolower( get_class( $stub ) ) !== 'historyblobstub' ) {
print "Error found object of class " . get_class( $stub ) . ", expecting historyblobstub\n";
return;
}
# Get the (maybe) external row
$externalRow = $dbr->selectRow( 'text', array( 'old_text' ),
array( 'old_id' => $stub->mOldId, "old_flags LIKE '%external%'" ),
$fname
);
if ( !$externalRow ) {
# Object wasn't external
return;
}
# Preserve the legacy encoding flag, but switch from object to external
if ( in_array( 'utf-8', $flags ) ) {
$newFlags = 'external,utf-8';
} else {
$newFlags = 'external';
}
# Update the row
$dbw->update( 'text',
array( /* SET */
'old_flags' => $newFlags,
'old_text' => $externalRow->old_text . '/' . $stub->mHash
),
array( /* WHERE */
'old_id' => $id
), $fname
);
}
?>
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