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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Service
* @subpackage Flickr
* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: ResultSet.php 20096 2010-01-06 02:05:09Z bkarwin $
*/
/**
* @see Zend_Service_Flickr_Result
*/
require_once 'Zend/Service/Flickr/Result.php';
/**
* @category Zend
* @package Zend_Service
* @subpackage Flickr
* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Service_Flickr_ResultSet implements SeekableIterator
{
/**
* Total number of available results
*
* @var int
*/
public $totalResultsAvailable;
/**
* Number of results in this result set
*
* @var int
*/
public $totalResultsReturned;
/**
* The offset of this result set in the total set of available results
*
* @var int
*/
public $firstResultPosition;
/**
* Results storage
*
* @var DOMNodeList
*/
protected $_results = null;
/**
* Reference to Zend_Service_Flickr object with which the request was made
*
* @var Zend_Service_Flickr
*/
private $_flickr;
/**
* Current index for the Iterator
*
* @var int
*/
private $_currentIndex = 0;
/**
* Parse the Flickr Result Set
*
* @param DOMDocument $dom
* @param Zend_Service_Flickr $flickr
* @return void
*/
public function __construct(DOMDocument $dom, Zend_Service_Flickr $flickr)
{
$this->_flickr = $flickr;
$xpath = new DOMXPath($dom);
$photos = $xpath->query('//photos')->item(0);
$page = $photos->getAttribute('page');
$pages = $photos->getAttribute('pages');
$perPage = $photos->getAttribute('perpage');
$total = $photos->getAttribute('total');
$this->totalResultsReturned = ($page == $pages || $pages == 0) ? ($total - ($page - 1) * $perPage) : (int) $perPage;
$this->firstResultPosition = ($page - 1) * $perPage + 1;
$this->totalResultsAvailable = (int) $total;
if ($total > 0) {
$this->_results = $xpath->query('//photo');
}
}
/**
* Total Number of results returned
*
* @return int Total number of results returned
*/
public function totalResults()
{
return $this->totalResultsReturned;
}
/**
* Implements SeekableIterator::current()
*
* @return Zend_Service_Flickr_Result
*/
public function current()
{
return new Zend_Service_Flickr_Result($this->_results->item($this->_currentIndex), $this->_flickr);
}
/**
* Implements SeekableIterator::key()
*
* @return int
*/
public function key()
{
return $this->_currentIndex;
}
/**
* Implements SeekableIterator::next()
*
* @return void
*/
public function next()
{
$this->_currentIndex += 1;
}
/**
* Implements SeekableIterator::rewind()
*
* @return void
*/
public function rewind()
{
$this->_currentIndex = 0;
}
/**
* Implements SeekableIterator::seek()
*
* @param int $index
* @throws OutOfBoundsException
* @return void
*/
public function seek($index)
{
$indexInt = (int) $index;
if ($indexInt >= 0 && (null === $this->_results || $indexInt < $this->_results->length)) {
$this->_currentIndex = $indexInt;
} else {
throw new OutOfBoundsException("Illegal index '$index'");
}
}
/**
* Implements SeekableIterator::valid()
*
* @return boolean
*/
public function valid()
{
return null !== $this->_results && $this->_currentIndex < $this->_results->length;
}
}
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