Пример #1
0
 private function fetchText()
 {
     $textId = $this->getTextId();
     // If we kept data for lazy extraction, use it now...
     if ($this->mTextRow !== null) {
         $row = $this->mTextRow;
         $this->mTextRow = null;
     } else {
         $row = null;
     }
     // Callers doing updates will pass in READ_LATEST as usual. Since the text/blob tables
     // do not normally get rows changed around, set READ_LATEST_IMMUTABLE in those cases.
     $flags = $this->mQueryFlags;
     $flags |= DBAccessObjectUtils::hasFlags($flags, self::READ_LATEST) ? self::READ_LATEST_IMMUTABLE : 0;
     list($index, $options, $fallbackIndex, $fallbackOptions) = DBAccessObjectUtils::getDBOptions($flags);
     if (!$row) {
         // Text data is immutable; check replica DBs first.
         $row = wfGetDB($index)->selectRow('text', ['old_text', 'old_flags'], ['old_id' => $textId], __METHOD__, $options);
     }
     // Fallback to DB_MASTER in some cases if the row was not found
     if (!$row && $fallbackIndex !== null) {
         // Use FOR UPDATE if it was used to fetch this revision. This avoids missing the row
         // due to REPEATABLE-READ. Also fallback to the master if READ_LATEST is provided.
         $row = wfGetDB($fallbackIndex)->selectRow('text', ['old_text', 'old_flags'], ['old_id' => $textId], __METHOD__, $fallbackOptions);
     }
     if (!$row) {
         wfDebugLog('Revision', "No text row with ID '{$textId}' (revision {$this->getId()}).");
     }
     $text = self::getRevisionText($row);
     if ($row && $text === false) {
         wfDebugLog('Revision', "No blob for text row '{$textId}' (revision {$this->getId()}).");
     }
     return is_string($text) ? $text : false;
 }
Пример #2
0
 /**
  * Load user table data, given mId has already been set.
  * @param integer $flags User::READ_* constant bitfield
  * @return bool False if the ID does not exist, true otherwise
  */
 public function loadFromId($flags = self::READ_NORMAL)
 {
     if ($this->mId == 0) {
         $this->loadDefaults();
         return false;
     }
     // Try cache (unless this needs data from the master DB).
     // NOTE: if this thread called saveSettings(), the cache was cleared.
     $latest = DBAccessObjectUtils::hasFlags($flags, self::READ_LATEST);
     if ($latest || !$this->loadFromCache()) {
         wfDebug("User: cache miss for user {$this->mId}\n");
         // Load from DB (make sure this thread sees its own changes)
         if (wfGetLB()->hasOrMadeRecentMasterChanges()) {
             $flags |= self::READ_LATEST;
         }
         if (!$this->loadFromDatabase($flags)) {
             // Can't load from ID, user is anonymous
             return false;
         }
         $this->saveToCache();
     }
     $this->mLoadedItems = true;
     $this->queryFlagsUsed = $flags;
     return true;
 }
Пример #3
0
 /**
  * Load user table data, given mId has already been set.
  * @param integer $flags User::READ_* constant bitfield
  * @return bool False if the ID does not exist, true otherwise
  */
 public function loadFromId($flags = self::READ_NORMAL)
 {
     if ($this->mId == 0) {
         // Anonymous users are not in the database (don't need cache)
         $this->loadDefaults();
         return false;
     }
     // Try cache (unless this needs data from the master DB).
     // NOTE: if this thread called saveSettings(), the cache was cleared.
     $latest = DBAccessObjectUtils::hasFlags($flags, self::READ_LATEST);
     if ($latest) {
         if (!$this->loadFromDatabase($flags)) {
             // Can't load from ID
             return false;
         }
     } else {
         $this->loadFromCache();
     }
     $this->mLoadedItems = true;
     $this->queryFlagsUsed = $flags;
     return true;
 }