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<?php |
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namespace evseevnn\Cassandra\Protocol\Response; |
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class Rows implements \Iterator, \Countable { |
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/** |
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* @var array |
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*/ |
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private $columns = []; |
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/** |
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* @var int |
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*/ |
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private $columnCount; |
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/** |
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* @var int |
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*/ |
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private $rowCount; |
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/** |
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* @var int |
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*/ |
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private $current = 0; |
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/** |
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* @var array |
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*/ |
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private $rows = []; |
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public function __construct(DataStream $stream, array $metadata) { |
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$this->columns = $metadata['columns']; |
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$this->columnCount = $metadata['columnCount']; |
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$this->rowCount = $stream->readInt(); |
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for ($i = 0; $i < $this->rowCount; ++$i) { |
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$row = array(); |
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for ($j = 0; $j < $this->columnCount; ++$j) { |
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try { |
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$row[$this->columns[$j]['name']] = $stream->readBytes(); |
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} catch (\Exception $e) { |
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$row[$this->columns[$j]['name']] = null; |
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} |
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} |
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$this->rows[] = $row; |
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} |
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} |
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/** |
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* (PHP 5 >= 5.0.0)<br/> |
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* Return the current element |
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* @link http://php.net/manual/en/iterator.current.php |
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* @throws \OutOfRangeException |
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* @return mixed Can return any type. |
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*/ |
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public function current() { |
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if (!isset($this->rows[$this->current])) { |
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throw new \OutOfRangeException('Invalid index'); |
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} |
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$row = $this->rows[$this->current]; |
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for ($i = 0; $i < $this->columnCount; ++$i) { |
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try { |
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$data = new DataStream($this->rows[$this->current][$this->columns[$i]['name']]); |
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$row[$this->columns[$i]['name']] = $data->readByType($this->columns[$i]['type']); |
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} catch (\Exception $e) { |
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trigger_error($e->getMessage()); |
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$row[$this->columns[$i]['name']] = null; |
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} |
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} |
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return $row; |
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} |
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/** |
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* (PHP 5 >= 5.0.0)<br/> |
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* Move forward to next element |
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* @link http://php.net/manual/en/iterator.next.php |
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* @return void Any returned value is ignored. |
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*/ |
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public function next() { |
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++$this->current; |
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} |
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/** |
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* (PHP 5 >= 5.0.0)<br/> |
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* Return the key of the current element |
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* @link http://php.net/manual/en/iterator.key.php |
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* @return mixed scalar on success, or null on failure. |
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*/ |
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public function key() { |
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return $this->current; |
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} |
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/** |
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* (PHP 5 >= 5.0.0)<br/> |
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* Checks if current position is valid |
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* @link http://php.net/manual/en/iterator.valid.php |
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* @return boolean The return value will be casted to boolean and then evaluated. |
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* Returns true on success or false on failure. |
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*/ |
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public function valid() { |
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return $this->current < $this->rowCount; |
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} |
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/** |
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* (PHP 5 >= 5.0.0)<br/> |
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* Rewind the Iterator to the first element |
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* @link http://php.net/manual/en/iterator.rewind.php |
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* @return void Any returned value is ignored. |
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*/ |
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public function rewind() { |
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$this->current = 0; |
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} |
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113
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/** |
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* (PHP 5 >= 5.1.0)<br/> |
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* Count elements of an object |
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* @link http://php.net/manual/en/countable.count.php |
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* @return int The custom count as an integer. |
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* </p> |
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* <p> |
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* The return value is cast to an integer. |
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*/ |
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public function count() { |
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return $this->rowCount; |
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} |
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/** |
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127
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* Return rows as array |
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* @return array |
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*/ |
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public function asArray() { |
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$items = []; |
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foreach($this as $item) { |
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$items[] = $item; |
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} |
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return $items; |
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} |
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} |
evseevnn /
php-cassandra-binary
