171 lines
4.0 KiB
PHP
171 lines
4.0 KiB
PHP
<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Service
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* @subpackage Amazon
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* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id: ResultSet.php 8064 2008-02-16 10:58:39Z thomas $
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*/
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/**
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* @see Zend_Service_Amazon_Item
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*/
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require_once 'Zend/Service/Amazon/Item.php';
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/**
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* @category Zend
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* @package Zend_Service
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* @subpackage Amazon
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* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Service_Amazon_ResultSet implements SeekableIterator
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{
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/**
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* A DOMNodeList of <Item> elements
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*
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* @var DOMNodeList
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*/
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protected $_results = null;
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/**
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* Amazon Web Service Return Document
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*
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* @var DOMDocument
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*/
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protected $_dom;
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/**
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* XPath Object for $this->_dom
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*
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* @var DOMXPath
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*/
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protected $_xpath;
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/**
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* Current index for SeekableIterator
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*
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* @var int
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*/
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protected $_currentIndex = 0;
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/**
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* Create an instance of Zend_Service_Amazon_ResultSet and create the necessary data objects
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*
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* @param DOMDocument $dom
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* @return void
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*/
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public function __construct(DOMDocument $dom)
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{
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$this->_dom = $dom;
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$this->_xpath = new DOMXPath($dom);
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$this->_xpath->registerNamespace('az', 'http://webservices.amazon.com/AWSECommerceService/2005-10-05');
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$this->_results = $this->_xpath->query('//az:Item');
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}
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/**
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* Total Number of results returned
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*
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* @return int Total number of results returned
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*/
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public function totalResults()
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{
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$result = $this->_xpath->query('//az:TotalResults/text()');
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return (int) $result->item(0)->data;
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}
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/**
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* Total Number of pages returned
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*
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* @return int Total number of pages returned
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*/
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public function totalPages()
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{
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$result = $this->_xpath->query('//az:TotalPages/text()');
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return (int) $result->item(0)->data;
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}
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/**
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* Implement SeekableIterator::current()
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*
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* @return Zend_Service_Amazon_Item
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*/
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public function current()
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{
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return new Zend_Service_Amazon_Item($this->_results->item($this->_currentIndex));
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}
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/**
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* Implement SeekableIterator::key()
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*
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* @return int
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*/
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public function key()
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{
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return $this->_currentIndex;
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}
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/**
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* Implement SeekableIterator::next()
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*
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* @return void
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*/
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public function next()
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{
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$this->_currentIndex += 1;
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}
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/**
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* Implement SeekableIterator::rewind()
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*
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* @return void
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*/
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public function rewind()
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{
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$this->_currentIndex = 0;
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}
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/**
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* Implement SeekableIterator::seek()
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*
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* @param int $index
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* @throws OutOfBoundsException
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* @return void
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*/
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public function seek($index)
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{
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$indexInt = (int) $index;
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if ($indexInt >= 0 && (null === $this->_results || $indexInt < $this->_results->length)) {
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$this->_currentIndex = $indexInt;
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} else {
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throw new OutOfBoundsException("Illegal index '$index'");
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}
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}
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/**
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* Implement SeekableIterator::valid()
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*
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* @return boolean
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*/
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public function valid()
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{
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return null !== $this->_results && $this->_currentIndex < $this->_results->length;
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}
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}
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