includes/Title.php

   1 <?php
   2 # See title.doc
   3
   4 /* private static */ $title_interwiki_cache = array();
   5
   6 # Title class
   7 #
   8 # * Represents a title, which may contain an interwiki designation or namespace
   9 # * Can fetch various kinds of data from the database, albeit inefficiently.
  10 #
  11 class Title {
  12         # All member variables should be considered private
  13         # Please use the accessor functions
  14
  15         var $mTextform;           # Text form (spaces not underscores) of the main part
  16         var $mUrlform;            # URL-encoded form of the main part
  17         var $mDbkeyform;          # Main part with underscores
  18         var $mNamespace;          # Namespace index, i.e. one of the NS_xxxx constants
  19         var $mInterwiki;          # Interwiki prefix (or null string)
  20         var $mFragment;           # Title fragment (i.e. the bit after the #)
  21         var $mArticleID;          # Article ID, fetched from the link cache on demand
  22         var $mRestrictions;       # Array of groups allowed to edit this article
  23                               # Only null or "sysop" are supported
  24         var $mRestrictionsLoaded; # Boolean for initialisation on demand
  25         var $mPrefixedText;       # Text form including namespace/interwiki, initialised on demand
  26
  27 #----------------------------------------------------------------------------
  28 #   Construction
  29 #----------------------------------------------------------------------------
  30
  31         /* private */ function Title()
  32         {
  33                 $this->mInterwiki = $this->mUrlform =
  34                 $this->mTextform = $this->mDbkeyform = "";
  35                 $this->mArticleID = -1;
  36                 $this->mNamespace = 0;
  37                 $this->mRestrictionsLoaded = false;
  38                 $this->mRestrictions = array();
  39         }
  40
  41         # From a prefixed DB key
  42         /* static */ function newFromDBkey( $key )
  43         {
  44                 $t = new Title();
  45                 $t->mDbkeyform = $key;
  46                 if( $t->secureAndSplit() )
  47                         return $t;
  48                 else
  49                         return NULL;
  50         }
  51
  52         # From text, such as what you would find in a link
  53         /* static */ function newFromText( $text )
  54         {
  55                 static $trans;
  56                 $fname = "Title::newFromText";
  57                 wfProfileIn( $fname );
  58
  59                 # Note - mixing latin1 named entities and unicode numbered
  60                 # ones will result in a bad link.
  61                 if( !isset( $trans ) ) {
  62                         global $wgInputEncoding;
  63                         $trans = array_flip( get_html_translation_table( HTML_ENTITIES ) );
  64                         if( strcasecmp( "utf-8", $wgInputEncoding ) == 0 ) {
  65                             $trans = array_map( "utf8_encode", $trans );
  66                         }
  67                 }
  68
  69                 if( is_object( $text ) ) {
  70                         wfDebugDieBacktrace( "Called with object instead of string." );
  71                 }
  72                 $text = strtr( $text, $trans );
  73
  74                 $text = wfMungeToUtf8( $text );
  75
  76
  77                 # What was this for? TS 2004-03-03
  78                 # $text = urldecode( $text );
  79
  80                 $t = new Title();
  81                 $t->mDbkeyform = str_replace( " ", "_", $text );
  82                 wfProfileOut( $fname );
  83                 if( $t->secureAndSplit() ) {
  84                         return $t;
  85                 } else {
  86                         return NULL;
  87                 }
  88         }
  89
  90         # From a URL-encoded title
  91         /* static */ function newFromURL( $url )
  92         {
  93                 global $wgLang, $wgServer;
  94                 $t = new Title();
  95                 $s = urldecode( $url ); # This is technically wrong, as anything
  96                                                                 # we've gotten is already decoded by PHP.
  97                                                                 # Kept for backwards compatibility with
  98                                                                 # buggy URLs we had for a while...
  99                 $s = $url;
 100
 101                 # For links that came from outside, check for alternate/legacy
 102                 # character encoding.
 103                 wfDebug( "Servr: $wgServer\n" );
 104                 if( empty( $_SERVER["HTTP_REFERER"] ) ||
 105                         strncmp($wgServer, $_SERVER["HTTP_REFERER"], strlen( $wgServer ) ) )
 106                 {
 107                         $s = $wgLang->checkTitleEncoding( $s );
 108                 } else {
 109                         wfDebug( "Refer: {$_SERVER['HTTP_REFERER']}\n" );
 110                 }
 111
 112                 $t->mDbkeyform = str_replace( " ", "_", $s );
 113                 if( $t->secureAndSplit() ) {
 114                         return $t;
 115                 } else {
 116                         return NULL;
 117                 }
 118         }
 119
 120         # From a cur_id
 121         # This is inefficiently implemented, the cur row is requested but not
 122         # used for anything else
 123         /* static */ function newFromID( $id )
 124         {
 125                 $fname = "Title::newFromID";
 126                 $row = wfGetArray( "cur", array( "cur_namespace", "cur_title" ),
 127                         array( "cur_id" => $id ), $fname );
 128                 if ( $row !== false ) {
 129                         $title = Title::makeTitle( $row->cur_namespace, $row->cur_title );
 130                 } else {
 131                         $title = NULL;
 132                 }
 133                 return $title;
 134         }
 135
 136         # From a namespace index and a DB key
 137         /* static */ function makeTitle( $ns, $title )
 138         {
 139                 $t = new Title();
 140                 $t->mDbkeyform = Title::makeName( $ns, $title );
 141                 if( $t->secureAndSplit() ) {
 142                         return $t;
 143                 } else {
 144                         return NULL;
 145                 }
 146         }
 147
 148         function newMainPage()
 149         {
 150                 return Title::newFromText( wfMsg( "mainpage" ) );
 151         }
 152
 153 #----------------------------------------------------------------------------
 154 #       Static functions
 155 #----------------------------------------------------------------------------
 156
 157         # Get the prefixed DB key associated with an ID
 158         /* static */ function nameOf( $id )
 159         {
 160                 $sql = "SELECT cur_namespace,cur_title FROM cur WHERE " .
 161                   "cur_id={$id}";
 162                 $res = wfQuery( $sql, DB_READ, "Article::nameOf" );
 163                 if ( 0 == wfNumRows( $res ) ) { return NULL; }
 164
 165                 $s = wfFetchObject( $res );
 166                 $n = Title::makeName( $s->cur_namespace, $s->cur_title );
 167                 return $n;
 168         }
 169
 170         # Get a regex character class describing the legal characters in a link
 171         /* static */ function legalChars()
 172         {
 173                 # Missing characters:
 174                 #  * []|# Needed for link syntax
 175                 #  * % and + are corrupted by Apache when they appear in the path
 176                 #
 177                 # Theoretically 0x80-0x9F of ISO 8859-1 should be disallowed, but
 178                 # this breaks interlanguage links
 179
 180                 $set = " !\"$&'()*,\\-.\\/0-9:;<=>?@A-Z\\\\^_`a-z{}~\\x80-\\xFF";
 181                 return $set;
 182         }
 183
 184         # Returns a stripped-down a title string ready for the search index
 185         # Takes a namespace index and a text-form main part
 186         /* static */ function indexTitle( $ns, $title )
 187         {
 188                 global $wgDBminWordLen, $wgLang;
 189
 190                 $lc = SearchEngine::legalSearchChars() . "&#;";
 191                 $t = $wgLang->stripForSearch( $title );
 192                 $t = preg_replace( "/[^{$lc}]+/", " ", $t );
 193                 $t = strtolower( $t );
 194
 195                 # Handle 's, s'
 196                 $t = preg_replace( "/([{$lc}]+)'s( |$)/", "\\1 \\1's ", $t );
 197                 $t = preg_replace( "/([{$lc}]+)s'( |$)/", "\\1s ", $t );
 198
 199                 $t = preg_replace( "/\\s+/", " ", $t );
 200
 201                 if ( $ns == Namespace::getImage() ) {
 202                         $t = preg_replace( "/ (png|gif|jpg|jpeg|ogg)$/", "", $t );
 203                 }
 204                 return trim( $t );
 205         }
 206
 207         # Make a prefixed DB key from a DB key and a namespace index
 208         /* static */ function makeName( $ns, $title )
 209         {
 210                 global $wgLang;
 211
 212                 $n = $wgLang->getNsText( $ns );
 213                 if ( "" == $n ) { return $title; }
 214                 else { return "{$n}:{$title}"; }
 215         }
 216
 217         # Arguably static
 218         # Returns the URL associated with an interwiki prefix
 219         # The URL contains $1, which is replaced by the title
 220         function getInterwikiLink( $key )
 221         {
 222                 global $wgMemc, $wgDBname, $title_interwiki_cache;
 223                 $k = "$wgDBname:interwiki:$key";
 224
 225                 if( array_key_exists( $k, $title_interwiki_cache ) )
 226                         return $title_interwiki_cache[$k]->iw_url;
 227
 228                 $s = $wgMemc->get( $k );
 229                 if( $s ) {
 230                         $title_interwiki_cache[$k] = $s;
 231                         return $s->iw_url;
 232                 }
 233                 $dkey = wfStrencode( $key );
 234                 $query = "SELECT iw_url FROM interwiki WHERE iw_prefix='$dkey'";
 235                 $res = wfQuery( $query, DB_READ, "Title::getInterwikiLink" );
 236                 if(!$res) return "";
 237
 238                 $s = wfFetchObject( $res );
 239                 if(!$s) {
 240                         $s = (object)false;
 241                         $s->iw_url = "";
 242                 }
 243                 $wgMemc->set( $k, $s );
 244                 $title_interwiki_cache[$k] = $s;
 245                 return $s->iw_url;
 246         }
 247
 248 #----------------------------------------------------------------------------
 249 #       Other stuff
 250 #----------------------------------------------------------------------------
 251
 252         # Simple accessors
 253         # See the definitions at the top of this file
 254
 255         function getText() { return $this->mTextform; }
 256         function getPartialURL() { return $this->mUrlform; }
 257         function getDBkey() { return $this->mDbkeyform; }
 258         function getNamespace() { return $this->mNamespace; }
 259         function setNamespace( $n ) { $this->mNamespace = $n; }
 260         function getInterwiki() { return $this->mInterwiki; }
 261         function getFragment() { return $this->mFragment; }
 262
 263         # Get title for search index
 264         function getIndexTitle()
 265         {
 266                 return Title::indexTitle( $this->mNamespace, $this->mTextform );
 267         }
 268
 269         # Get prefixed title with underscores
 270         function getPrefixedDBkey()
 271         {
 272                 $s = $this->prefix( $this->mDbkeyform );
 273                 $s = str_replace( " ", "_", $s );
 274                 return $s;
 275         }
 276
 277         # Get prefixed title with spaces
 278         # This is the form usually used for display
 279         function getPrefixedText()
 280         {
 281                 if ( empty( $this->mPrefixedText ) ) {
 282                         $s = $this->prefix( $this->mTextform );
 283                         $s = str_replace( "_", " ", $s );
 284                         $this->mPrefixedText = $s;
 285                 }
 286                 return $this->mPrefixedText;
 287         }
 288
 289         # Get a URL-encoded title (not an actual URL) including interwiki
 290         function getPrefixedURL()
 291         {
 292                 $s = $this->prefix( $this->mDbkeyform );
 293                 $s = str_replace( " ", "_", $s );
 294
 295                 $s = wfUrlencode ( $s ) ;
 296
 297                 # Cleaning up URL to make it look nice -- is this safe?
 298                 $s = preg_replace( "/%3[Aa]/", ":", $s );
 299                 $s = preg_replace( "/%2[Ff]/", "/", $s );
 300                 $s = str_replace( "%28", "(", $s );
 301                 $s = str_replace( "%29", ")", $s );
 302
 303                 return $s;
 304         }
 305
 306         # Get a real URL referring to this title, with interwiki link and fragment
 307         function getFullURL( $query = "" )
 308         {
 309                 global $wgLang, $wgArticlePath, $wgServer, $wgScript;
 310
 311                 if ( "" == $this->mInterwiki ) {
 312                         $p = $wgArticlePath;
 313                         return $wgServer . $this->getLocalUrl( $query );
 314                 }
 315
 316                 $p = $this->getInterwikiLink( $this->mInterwiki );
 317                 $n = $wgLang->getNsText( $this->mNamespace );
 318                 if ( "" != $n ) { $n .= ":"; }
 319                 $u = str_replace( "$1", $n . $this->mUrlform, $p );
 320                 if ( "" != $this->mFragment ) {
 321                         $u .= "#" . wfUrlencode( $this->mFragment );
 322                 }
 323                 return $u;
 324         }
 325
 326         # Get a URL with an optional query string, no fragment
 327         # * If $query=="", it will use $wgArticlePath
 328         # * Returns a full for an interwiki link, loses any query string
 329         # * Optionally adds the server and escapes for HTML
 330         # * Setting $query to "-" makes an old-style URL with nothing in the
 331         #   query except a title
 332
 333         function getURL() {
 334                 die( "Call to obsolete obsolete function Title::getURL()" );
 335         }
 336
 337         function getLocalURL( $query = "" )
 338         {
 339                 global $wgLang, $wgArticlePath, $wgScript;
 340
 341                 if ( $this->isExternal() ) {
 342                         return $this->getFullURL();
 343                 }
 344
 345                 $dbkey = wfUrlencode( $this->getPrefixedDBkey() );
 346                 if ( $query == "" ) {
 347                         $url = str_replace( "$1", $dbkey, $wgArticlePath );
 348                 } else {
 349                         if ( $query == "-" ) {
 350                                 $query = "";
 351                         }
 352                         if ( $wgScript != "" ) {
 353                                 $url = "{$wgScript}?title={$dbkey}&{$query}";
 354                         } else {
 355                                 # Top level wiki
 356                                 $url = "/{$dbkey}?{$query}";
 357                         }
 358                 }
 359                 return $url;
 360         }
 361
 362         function escapeLocalURL( $query = "" ) {
 363                 return wfEscapeHTML( $this->getLocalURL( $query ) );
 364         }
 365
 366         function escapeFullURL( $query = "" ) {
 367                 return wfEscapeHTML( $this->getFullURL( $query ) );
 368         }
 369
 370         function getInternalURL( $query = "" ) {
 371                 # Used in various Squid-related code, in case we have a different
 372                 # internal hostname for the server than the exposed one.
 373                 global $wgInternalServer;
 374                 return $wgInternalServer . $this->getLocalURL( $query );
 375         }
 376
 377         # Get the edit URL, or a null string if it is an interwiki link
 378         function getEditURL()
 379         {
 380                 global $wgServer, $wgScript;
 381
 382                 if ( "" != $this->mInterwiki ) { return ""; }
 383                 $s = $this->getLocalURL( "action=edit" );
 384
 385                 return $s;
 386         }
 387
 388         # Get HTML-escaped displayable text
 389         # For the title field in <a> tags
 390         function getEscapedText()
 391         {
 392                 return wfEscapeHTML( $this->getPrefixedText() );
 393         }
 394
 395         # Is the title interwiki?
 396         function isExternal() { return ( "" != $this->mInterwiki ); }
 397
 398         # Does the title correspond to a protected article?
 399         function isProtected()
 400         {
 401                 if ( -1 == $this->mNamespace ) { return true; }
 402                 $a = $this->getRestrictions();
 403                 if ( in_array( "sysop", $a ) ) { return true; }
 404                 return false;
 405         }
 406
 407         # Is the page a log page, i.e. one where the history is messed up by
 408         # LogPage.php? This used to be used for suppressing diff links in recent
 409         # changes, but now that's done by setting a flag in the recentchanges
 410         # table. Hence, this probably is no longer used.
 411         function isLog()
 412         {
 413                 if ( $this->mNamespace != Namespace::getWikipedia() ) {
 414                         return false;
 415                 }
 416                 if ( ( 0 == strcmp( wfMsg( "uploadlogpage" ), $this->mDbkeyform ) ) ||
 417                   ( 0 == strcmp( wfMsg( "dellogpage" ), $this->mDbkeyform ) ) ) {
 418                         return true;
 419                 }
 420                 return false;
 421         }
 422
 423         # Is $wgUser is watching this page?
 424         function userIsWatching()
 425         {
 426                 global $wgUser;
 427
 428                 if ( -1 == $this->mNamespace ) { return false; }
 429                 if ( 0 == $wgUser->getID() ) { return false; }
 430
 431                 return $wgUser->isWatched( $this );
 432         }
 433
 434         # Can $wgUser edit this page?
 435         function userCanEdit()
 436         {
 437                 global $wgUser;
 438
 439                 if ( -1 == $this->mNamespace ) { return false; }
 440                 # if ( 0 == $this->getArticleID() ) { return false; }
 441                 if ( $this->mDbkeyform == "_" ) { return false; }
 442
 443                 $ur = $wgUser->getRights();
 444                 foreach ( $this->getRestrictions() as $r ) {
 445                         if ( "" != $r && ( ! in_array( $r, $ur ) ) ) {
 446                                 return false;
 447                         }
 448                 }
 449                 return true;
 450         }
 451
 452         # Accessor/initialisation for mRestrictions
 453         function getRestrictions()
 454         {
 455                 $id = $this->getArticleID();
 456                 if ( 0 == $id ) { return array(); }
 457
 458                 if ( ! $this->mRestrictionsLoaded ) {
 459                         $res = wfGetSQL( "cur", "cur_restrictions", "cur_id=$id" );
 460                         $this->mRestrictions = explode( ",", trim( $res ) );
 461                         $this->mRestrictionsLoaded = true;
 462                 }
 463                 return $this->mRestrictions;
 464         }
 465
 466         # Is there a version of this page in the deletion archive?
 467         function isDeleted() {
 468                 $ns = $this->getNamespace();
 469                 $t = wfStrencode( $this->getDBkey() );
 470                 $sql = "SELECT COUNT(*) AS n FROM archive WHERE ar_namespace=$ns AND ar_title='$t'";
 471                 if( $res = wfQuery( $sql, DB_READ ) ) {
 472                         $s = wfFetchObject( $res );
 473                         return $s->n;
 474                 }
 475                 return 0;
 476         }
 477
 478         # Get the article ID from the link cache
 479         # Used very heavily, e.g. in Parser::replaceInternalLinks()
 480         function getArticleID()
 481         {
 482                 global $wgLinkCache;
 483
 484                 if ( -1 != $this->mArticleID ) { return $this->mArticleID; }
 485                 $this->mArticleID = $wgLinkCache->addLinkObj( $this );
 486                 return $this->mArticleID;
 487         }
 488
 489         # This clears some fields in this object, and clears any associated keys in the
 490         # "bad links" section of $wgLinkCache. This is called from Article::insertNewArticle()
 491         # to allow loading of the new cur_id. It's also called from Article::doDeleteArticle()
 492         function resetArticleID( $newid )
 493         {
 494                 global $wgLinkCache;
 495                 $wgLinkCache->clearBadLink( $this->getPrefixedDBkey() );
 496
 497                 if ( 0 == $newid ) { $this->mArticleID = -1; }
 498                 else { $this->mArticleID = $newid; }
 499                 $this->mRestrictionsLoaded = false;
 500                 $this->mRestrictions = array();
 501         }
 502
 503         # Updates cur_touched
 504         # Called from LinksUpdate.php
 505         function invalidateCache() {
 506                 $now = wfTimestampNow();
 507                 $ns = $this->getNamespace();
 508                 $ti = wfStrencode( $this->getDBkey() );
 509                 $sql = "UPDATE cur SET cur_touched='$now' WHERE cur_namespace=$ns AND cur_title='$ti'";
 510                 return wfQuery( $sql, DB_WRITE, "Title::invalidateCache" );
 511         }
 512
 513         # Prefixes some arbitrary text with the namespace or interwiki prefix of this object
 514         /* private */ function prefix( $name )
 515         {
 516                 global $wgLang;
 517
 518                 $p = "";
 519                 if ( "" != $this->mInterwiki ) {
 520                         $p = $this->mInterwiki . ":";
 521                 }
 522                 if ( 0 != $this->mNamespace ) {
 523                         $p .= $wgLang->getNsText( $this->mNamespace ) . ":";
 524                 }
 525                 return $p . $name;
 526         }
 527
 528         # Secure and split - main initialisation function for this object
 529         #
 530         # Assumes that mDbkeyform has been set, and is urldecoded
 531     # and uses undersocres, but not otherwise munged.  This function
 532     # removes illegal characters, splits off the winterwiki and
 533     # namespace prefixes, sets the other forms, and canonicalizes
 534     # everything.
 535         #
 536         /* private */ function secureAndSplit()
 537         {
 538                 global $wgLang, $wgLocalInterwiki;
 539                 $fname = "Title::secureAndSplit";
 540                 wfProfileIn( $fname );
 541
 542                 static $imgpre = false;
 543                 static $rxTc = false;
 544
 545                 # Initialisation
 546                 if ( $imgpre === false ) {
 547                         $imgpre = ":" . $wgLang->getNsText( Namespace::getImage() ) . ":";
 548                         $rxTc = "/[^" . Title::legalChars() . "]/";
 549                 }
 550
 551
 552                 $this->mInterwiki = $this->mFragment = "";
 553                 $this->mNamespace = 0;
 554
 555                 # Clean up whitespace
 556                 #
 557                 $t = preg_replace( "/[\\s_]+/", "_", $this->mDbkeyform );
 558                 if ( "_" == $t{0} ) {
 559                         $t = substr( $t, 1 );
 560                 }
 561                 $l = strlen( $t );
 562                 if ( $l && ( "_" == $t{$l-1} ) ) {
 563                         $t = substr( $t, 0, $l-1 );
 564                 }
 565                 if ( "" == $t ) {
 566                         wfProfileOut( $fname );
 567                         return false;
 568                 }
 569
 570                 $this->mDbkeyform = $t;
 571                 $done = false;
 572
 573                 # :Image: namespace
 574                 if ( 0 == strncasecmp( $imgpre, $t, strlen( $imgpre ) ) ) {
 575                         $t = substr( $t, 1 );
 576                 }
 577
 578                 # Redundant initial colon
 579                 if ( ":" == $t{0} ) {
 580                         $r = substr( $t, 1 );
 581                 } else {
 582                         # Namespace or interwiki prefix
 583                         if ( preg_match( "/^((?:i|x|[a-z]{2,3})(?:-[a-z0-9]+)?|[A-Za-z0-9_\\x80-\\xff]+):_*(.*)$/", $t, $m ) ) {
 584                                 #$p = strtolower( $m[1] );
 585                                 $p = $m[1];
 586                                 if ( $ns = $wgLang->getNsIndex( strtolower( $p ) )) {
 587                                         # Ordinary namespace
 588                                         $t = $m[2];
 589                                         $this->mNamespace = $ns;
 590                                 } elseif ( $this->getInterwikiLink( $p ) ) {
 591                                         # Interwiki link
 592                                         $t = $m[2];
 593                                         $this->mInterwiki = $p;
 594
 595                                         if ( !preg_match( "/^([A-Za-z0-9_\\x80-\\xff]+):(.*)$/", $t, $m ) ) {
 596                                                 $done = true;
 597                                         } elseif($this->mInterwiki != $wgLocalInterwiki) {
 598                                                 $done = true;
 599                                         }
 600                                 }
 601                         }
 602                         $r = $t;
 603                 }
 604
 605                 # Redundant interwiki prefix to the local wiki
 606                 if ( 0 == strcmp( $this->mInterwiki, $wgLocalInterwiki ) ) {
 607                         $this->mInterwiki = "";
 608                 }
 609                 # We already know that some pages won't be in the database!
 610                 #
 611                 if ( "" != $this->mInterwiki || -1 == $this->mNamespace ) {
 612                         $this->mArticleID = 0;
 613                 }
 614                 $f = strstr( $r, "#" );
 615                 if ( false !== $f ) {
 616                         $this->mFragment = substr( $f, 1 );
 617                         $r = substr( $r, 0, strlen( $r ) - strlen( $f ) );
 618                 }
 619
 620                 # Reject illegal characters.
 621                 #
 622                 if( preg_match( $rxTc, $r ) ) {
 623                         return false;
 624                 }
 625
 626                 # "." and ".." conflict with the directories of those names
 627                 if ( $r === "." || $r === ".." ) {
 628                         return false;
 629                 }
 630
 631                 # Initial capital letter
 632                 if( $this->mInterwiki == "") $t = $wgLang->ucfirst( $r );
 633
 634                 # Fill fields
 635                 $this->mDbkeyform = $t;
 636                 $this->mUrlform = wfUrlencode( $t );
 637
 638                 $this->mTextform = str_replace( "_", " ", $t );
 639
 640                 wfProfileOut( $fname );
 641                 return true;
 642         }
 643
 644         # Get a title object associated with the talk page of this article
 645         function getTalkPage() {
 646                 return Title::makeTitle( Namespace::getTalk( $this->getNamespace() ), $this->getDBkey() );
 647         }
 648
 649         # Get a title object associated with the subject page of this talk page
 650         function getSubjectPage() {
 651                 return Title::makeTitle( Namespace::getSubject( $this->getNamespace() ), $this->getDBkey() );
 652         }
 653 }
 654 ?>