PHP AdapterInterface::rollBack方法代码示例

 /**
  * Move tree node
  *
  * @param Node $node
  * @param Node $newParent
  * @param Node $prevNode
  * @return void
  * @throws \Exception
  * @todo Use adapter for generate conditions
  */
 public function move($node, $newParent, $prevNode = null)
 {
     $position = 1;
     $oldPath = $node->getData($this->_pathField);
     $newPath = $newParent->getData($this->_pathField);
     $newPath = $newPath . '/' . $node->getId();
     $oldPathLength = strlen($oldPath);
     $newLevel = $newParent->getLevel() + 1;
     $levelDisposition = $newLevel - $node->getLevel();
     $data = [$this->_levelField => new \Zend_Db_Expr("{$this->_levelField} + '{$levelDisposition}'"), $this->_pathField => new \Zend_Db_Expr("CONCAT('{$newPath}', RIGHT({$this->_pathField}, LENGTH({$this->_pathField}) - {$oldPathLength}))")];
     $condition = $this->_conn->quoteInto("{$this->_pathField} REGEXP ?", "^{$oldPath}(/|\$)");
     $this->_conn->beginTransaction();
     $reorderData = [$this->_orderField => new \Zend_Db_Expr("{$this->_orderField} + 1")];
     try {
         if ($prevNode && $prevNode->getId()) {
             $reorderCondition = "{$this->_orderField} > {$prevNode->getData($this->_orderField)}";
             $position = $prevNode->getData($this->_orderField) + 1;
         } else {
             $reorderCondition = $this->_conn->quoteInto("{$this->_pathField} REGEXP ?", "^{$newParent->getData($this->_pathField)}/[0-9]+\$");
             $select = $this->_conn->select()->from($this->_table, new \Zend_Db_Expr("MIN({$this->_orderField})"))->where($reorderCondition);
             $position = (int) $this->_conn->fetchOne($select);
         }
         $this->_conn->update($this->_table, $reorderData, $reorderCondition);
         $this->_conn->update($this->_table, $data, $condition);
         $this->_conn->update($this->_table, [$this->_orderField => $position, $this->_levelField => $newLevel], $this->_conn->quoteInto("{$this->_idField} = ?", $node->getId()));
         $this->_conn->commit();
     } catch (\Exception $e) {
         $this->_conn->rollBack();
         throw new \Exception("Can't move tree node due to error: " . $e->getMessage());
     }
 }

 /**
  * @param string|int $eId
  * @param string|int $pId
  * @param string|int $aId
  * @return void
  * @SuppressWarnings(PHPMD.CyclomaticComplexity)
  * @SuppressWarnings(PHPMD.NPathComplexity)
  * @SuppressWarnings(PHPMD.ExcessiveMethodLength)
  * @SuppressWarnings(PHPMD.UnusedLocalVariable)
  * @SuppressWarnings(PHPMD.ExitExpression)
  */
 public function moveNodes($eId, $pId, $aId = 0)
 {
     $eInfo = $this->getNodeInfo($eId);
     if ($pId != 0) {
         $pInfo = $this->getNodeInfo($pId);
     }
     if ($aId != 0) {
         $aInfo = $this->getNodeInfo($aId);
     }
     $level = $eInfo[$this->_level];
     $leftKey = $eInfo[$this->_left];
     $rightKey = $eInfo[$this->_right];
     if ($pId == 0) {
         $levelUp = 0;
     } else {
         $levelUp = $pInfo[$this->_level];
     }
     $rightKeyNear = 0;
     $leftKeyNear = 0;
     if ($pId == 0) {
         //move to root
         $rightKeyNear = $this->_db->fetchOne('SELECT MAX(' . $this->_right . ') FROM ' . $this->_table);
     } elseif ($aId != 0 && $pId == $eInfo[$this->_pid]) {
         // if we have after ID
         $rightKeyNear = $aInfo[$this->_right];
         $leftKeyNear = $aInfo[$this->_left];
     } elseif ($aId == 0 && $pId == $eInfo[$this->_pid]) {
         // if we do not have after ID
         $rightKeyNear = $pInfo[$this->_left];
     } elseif ($pId != $eInfo[$this->_pid]) {
         $rightKeyNear = $pInfo[$this->_right] - 1;
     }
     $skewLevel = $pInfo[$this->_level] - $eInfo[$this->_level] + 1;
     $skewTree = $eInfo[$this->_right] - $eInfo[$this->_left] + 1;
     echo "alert('" . $rightKeyNear . "');";
     if ($rightKeyNear > $rightKey) {
         // up
         echo "alert('move up');";
         $skewEdit = $rightKeyNear - $leftKey + 1;
         $sql = 'UPDATE ' . $this->_table . ' SET ' . $this->_right . ' = IF(' . $this->_left . ' >= ' . $eInfo[$this->_left] . ', ' . $this->_right . ' + ' . $skewEdit . ', IF(' . $this->_right . ' < ' . $eInfo[$this->_left] . ', ' . $this->_right . ' + ' . $skewTree . ', ' . $this->_right . ')), ' . $this->_level . ' = IF(' . $this->_left . ' >= ' . $eInfo[$this->_left] . ', ' . $this->_level . ' + ' . $skewLevel . ', ' . $this->_level . '), ' . $this->_left . ' = IF(' . $this->_left . ' >= ' . $eInfo[$this->_left] . ', ' . $this->_left . ' + ' . $skewEdit . ', IF(' . $this->_left . ' > ' . $rightKeyNear . ', ' . $this->_left . ' + ' . $skewTree . ', ' . $this->_left . '))' . ' WHERE ' . $this->_right . ' > ' . $rightKeyNear . ' AND ' . $this->_left . ' < ' . $eInfo[$this->_right];
     } elseif ($rightKeyNear < $rightKey) {
         // down
         echo "alert('move down');";
         $skewEdit = $rightKeyNear - $leftKey + 1 - $skewTree;
         $sql = 'UPDATE ' . $this->_table . ' SET ' . $this->_left . ' = IF(' . $this->_right . ' <= ' . $rightKey . ', ' . $this->_left . ' + ' . $skewEdit . ', IF(' . $this->_left . ' > ' . $rightKey . ', ' . $this->_left . ' - ' . $skewTree . ', ' . $this->_left . ')), ' . $this->_level . ' = IF(' . $this->_right . ' <= ' . $rightKey . ', ' . $this->_level . ' + ' . $skewLevel . ', ' . $this->_level . '), ' . $this->_right . ' = IF(' . $this->_right . ' <= ' . $rightKey . ', ' . $this->_right . ' + ' . $skewEdit . ', IF(' . $this->_right . ' <= ' . $rightKeyNear . ', ' . $this->_right . ' - ' . $skewTree . ', ' . $this->_right . '))' . ' WHERE ' . $this->_right . ' > ' . $leftKey . ' AND ' . $this->_left . ' <= ' . $rightKeyNear;
     }
     $this->_db->beginTransaction();
     try {
         $this->_db->query($sql);
         $this->_db->commit();
     } catch (\Exception $e) {
         $this->_db->rollBack();
         echo $e->getMessage();
         echo "<br>\r\n";
         echo $sql;
         echo "<br>\r\n";
         exit;
     }
     echo "alert('node added')";
 }

 /**
  * Updates data when subscriber received
  *
  * @param \Magento\Newsletter\Model\Subscriber $subscriber
  * @param \Magento\Newsletter\Model\Queue $queue
  * @return $this
  * @throws \Magento\Framework\Exception\LocalizedException
  */
 public function received(\Magento\Newsletter\Model\Subscriber $subscriber, \Magento\Newsletter\Model\Queue $queue)
 {
     $this->connection->beginTransaction();
     try {
         $data['letter_sent_at'] = $this->_date->gmtDate();
         $this->connection->update($this->_subscriberLinkTable, $data, ['subscriber_id = ?' => $subscriber->getId(), 'queue_id = ?' => $queue->getId()]);
         $this->connection->commit();
     } catch (\Exception $e) {
         $this->connection->rollBack();
         throw new \Magento\Framework\Exception\LocalizedException(__('We cannot mark as received subscriber.'));
     }
     return $this;
 }

 /**
  * @param Node $node
  * @return $this
  * @throws \Exception
  */
 public function removeNode($node)
 {
     // For reorder old node branch
     $dataReorderOld = [$this->_orderField => new \Zend_Db_Expr($this->_conn->quoteIdentifier($this->_orderField) . '-1')];
     $conditionReorderOld = $this->_conn->quoteIdentifier($this->_parentField) . '=' . $node->getData($this->_parentField) . ' AND ' . $this->_conn->quoteIdentifier($this->_orderField) . '>' . $node->getData($this->_orderField);
     $this->_conn->beginTransaction();
     try {
         $condition = $this->_conn->quoteInto("{$this->_idField}=?", $node->getId());
         $this->_conn->delete($this->_table, $condition);
         // Update old node branch
         $this->_conn->update($this->_table, $dataReorderOld, $conditionReorderOld);
         $this->_conn->commit();
     } catch (\Exception $e) {
         $this->_conn->rollBack();
         throw new \Exception('Can\'t remove tree node');
     }
     parent::removeNode($node);
     return $this;
 }

 /**
  * Rollback transaction
  *
  * @return $this
  */
 public function rollBackTransaction()
 {
     $this->connection->rollBack();
     $this->_resourceHelper->restoreTransactionIsolationLevel();
     return $this;
 }