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<?php |
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/** |
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* Phossa Project |
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* |
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* PHP version 5.4 |
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* |
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* @category Library |
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* @package Phossa2\Db |
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* @copyright Copyright (c) 2016 phossa.com |
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* @license http://mit-license.org/ MIT License |
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* @link http://www.phossa.com/ |
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*/ |
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/*# declare(strict_types=1); */ |
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namespace Phossa2\Db\Driver; |
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use Phossa2\Db\Message\Message; |
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use Phossa2\Shared\Base\ObjectAbstract; |
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use Phossa2\Db\Interfaces\ResultInterface; |
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use Phossa2\Db\Exception\RuntimeException; |
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/** |
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* ResultAbstract |
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* |
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* @package Phossa2\Db |
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* @author Hong Zhang <[email protected]> |
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* @see ObjectAbstract |
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* @see ResultInterface |
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* @version 2.0.0 |
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* @since 2.0.0 added |
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*/ |
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abstract class ResultAbstract extends ObjectAbstract implements ResultInterface |
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{ |
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/** |
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* Fetched already |
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* |
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* @var bool |
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* @access protected |
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*/ |
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protected $fetched = false; |
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/** |
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* {@inheritDoc} |
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*/ |
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public function isSelect()/*# : bool */ |
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{ |
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return 0 !== $this->fieldCount(); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function fetchAll()/*# : array */ |
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{ |
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$this->exceptionIfNotSelect(); |
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$this->exceptionIfFetchedAlready(); |
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$this->fetched = true; |
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return $this->realFetchAll(); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function fetchRow(/*# int */ $rowCount = 1)/*# : array */ |
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{ |
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$this->exceptionIfNotSelect(); |
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$this->exceptionIfFetchedAlready(); |
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$this->fetched = true; |
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return $this->realFetchRow($rowCount); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function fetchCol($col = 0, $rowCount = 0)/*# : array */ |
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{ |
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$rows = $rowCount ? $this->fetchRow($rowCount) : $this->fetchAll(); |
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$cols = []; |
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foreach($rows as $row) { |
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if (isset($row[$col])) { |
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$cols[] = $row[$col]; |
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} |
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} |
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return $cols; |
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} |
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/** |
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* Throw exception if not select query |
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* |
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* @throws RuntimeException if not a select query |
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* @access protected |
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*/ |
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protected function exceptionIfNotSelect() |
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{ |
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if (!$this->isSelect()) { |
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throw new RuntimeException( |
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Message::get(Message::DB_RESULT_NOT_SELECT), |
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Message::DB_RESULT_NOT_SELECT |
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); |
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} |
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} |
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/** |
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* Throw exception if fetched already |
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* |
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* @throws RuntimeException if fetched already |
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* @access protected |
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*/ |
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protected function exceptionIfFetchedAlready() |
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{ |
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if ($this->fetched) { |
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throw new RuntimeException( |
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Message::get(Message::DB_RESULT_FETCHED), |
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Message::DB_RESULT_FETCHED |
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); |
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} |
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} |
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/** |
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* Driver fetch all |
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* |
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* @return array |
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* @access protected |
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*/ |
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abstract protected function realFetchAll()/*# : array */; |
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/** |
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* Driver fetch row |
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* |
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* @param int $rowCount number of rows to fetch |
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* @return array |
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* @access protected |
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*/ |
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abstract protected function realFetchRow($rowCount)/*# : array */; |
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} |
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phossa2 /
db
