php Zend Framework http framework zend com link http github com zendfr

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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Db\Adapter\Driver\Pdo;
use Iterator;
use PDOStatement;
use Zend\Db\Adapter\Driver\ResultInterface;
use Zend\Db\Adapter\Exception;
class Result implements Iterator, ResultInterface
{
const STATEMENT_MODE_SCROLLABLE = 'scrollable';
const STATEMENT_MODE_FORWARD = 'forward';
/**
*
* @var string
*/
protected $statementMode = self::STATEMENT_MODE_FORWARD;
/**
* @var \PDOStatement
*/
protected $resource = null;
/**
* @var array Result options
*/
protected $options;
/**
* Is the current complete?
* @var bool
*/
protected $currentComplete = false;
/**
* Track current item in recordset
* @var mixed
*/
protected $currentData = null;
/**
* Current position of scrollable statement
* @var int
*/
protected $position = -1;
/**
* @var mixed
*/
protected $generatedValue = null;
/**
* @var null
*/
protected $rowCount = null;
/**
* Initialize
*
* @param PDOStatement $resource
* @param $generatedValue
* @param int $rowCount
* @return Result
*/
public function initialize(PDOStatement $resource, $generatedValue, $rowCount = null)
{
$this->resource = $resource;
$this->generatedValue = $generatedValue;
$this->rowCount = $rowCount;
return $this;
}
/**
* @return null
*/
public function buffer()
{
return null;
}
/**
* @return bool|null
*/
public function isBuffered()
{
return false;
}
/**
* Get resource
*
* @return mixed
*/
public function getResource()
{
return $this->resource;
}
/**
* Get the data
* @return array
*/
public function current()
{
if ($this->currentComplete) {
return $this->currentData;
}
$this->currentData = $this->resource->fetch(\PDO::FETCH_ASSOC);
$this->currentComplete = true;
return $this->currentData;
}
/**
* Next
*
* @return mixed
*/
public function next()
{
$this->currentData = $this->resource->fetch(\PDO::FETCH_ASSOC);
$this->currentComplete = true;
$this->position++;
return $this->currentData;
}
/**
* Key
*
* @return mixed
*/
public function key()
{
return $this->position;
}
/**
* @throws Exception\RuntimeException
* @return void
*/
public function rewind()
{
if ($this->statementMode == self::STATEMENT_MODE_FORWARD && $this->position > 0) {
throw new Exception\RuntimeException(
'This result is a forward only result set, calling rewind() after moving forward is not supported'
);
}
$this->currentData = $this->resource->fetch(\PDO::FETCH_ASSOC);
$this->currentComplete = true;
$this->position = 0;
}
/**
* Valid
*
* @return bool
*/
public function valid()
{
return ($this->currentData !== false);
}
/**
* Count
*
* @return int
*/
public function count()
{
if (is_int($this->rowCount)) {
return $this->rowCount;
}
if ($this->rowCount instanceof \Closure) {
$this->rowCount = (int) call_user_func($this->rowCount);
} else {
$this->rowCount = (int) $this->resource->rowCount();
}
return $this->rowCount;
}
/**
* @return int
*/
public function getFieldCount()
{
return $this->resource->columnCount();
}
/**
* Is query result
*
* @return bool
*/
public function isQueryResult()
{
return ($this->resource->columnCount() > 0);
}
/**
* Get affected rows
*
* @return int
*/
public function getAffectedRows()
{
return $this->resource->rowCount();
}
/**
* @return mixed|null
*/
public function getGeneratedValue()
{
return $this->generatedValue; }
}
}