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353 lines
9.5 KiB
PHP
353 lines
9.5 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_Gdata
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* @subpackage App
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* @copyright Copyright (c) 2005-2009 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: Feed.php 16971 2009-07-22 18:05:45Z mikaelkael $
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*/
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/**
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* @see Zend_Gdata_App_Entry
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*/
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require_once 'Zend/Gdata/App/Entry.php';
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/**
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* @see Zend_Gdata_App_FeedSourceParent
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*/
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require_once 'Zend/Gdata/App/FeedSourceParent.php';
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/**
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* Atom feed class
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*
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* @category Zend
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* @package Zend_Gdata
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* @subpackage App
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* @copyright Copyright (c) 2005-2009 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_Gdata_App_Feed extends Zend_Gdata_App_FeedSourceParent
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implements Iterator, ArrayAccess
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{
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/**
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* The root xml element of this data element
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*
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* @var string
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*/
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protected $_rootElement = 'feed';
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/**
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* Cache of feed entries.
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*
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* @var array
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*/
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protected $_entry = array();
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/**
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* Current location in $_entry array
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*
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* @var int
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*/
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protected $_entryIndex = 0;
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/**
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* Make accessing some individual elements of the feed easier.
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*
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* Special accessors 'entry' and 'entries' are provided so that if
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* you wish to iterate over an Atom feed's entries, you can do so
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* using foreach ($feed->entries as $entry) or foreach
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* ($feed->entry as $entry).
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*
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* @param string $var The property to get.
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* @return mixed
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*/
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public function __get($var)
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{
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switch ($var) {
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case 'entries':
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return $this;
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default:
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return parent::__get($var);
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}
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}
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/**
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* Retrieves the DOM model representing this object and all children
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*
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* @param DOMDocument $doc
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* @return DOMElement
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*/
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public function getDOM($doc = null, $majorVersion = 1, $minorVersion = null)
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{
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$element = parent::getDOM($doc, $majorVersion, $minorVersion);
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foreach ($this->_entry as $entry) {
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$element->appendChild($entry->getDOM($element->ownerDocument));
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}
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return $element;
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}
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/**
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* Creates individual Entry objects of the appropriate type and
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* stores them in the $_entry array based upon DOM data.
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*
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* @param DOMNode $child The DOMNode to process
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*/
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protected function takeChildFromDOM($child)
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{
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$absoluteNodeName = $child->namespaceURI . ':' . $child->localName;
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switch ($absoluteNodeName) {
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case $this->lookupNamespace('atom') . ':' . 'entry':
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$newEntry = new $this->_entryClassName($child);
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$newEntry->setHttpClient($this->getHttpClient());
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$newEntry->setMajorProtocolVersion($this->getMajorProtocolVersion());
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$newEntry->setMinorProtocolVersion($this->getMinorProtocolVersion());
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$this->_entry[] = $newEntry;
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break;
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default:
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parent::takeChildFromDOM($child);
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break;
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}
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}
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/**
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* Get the number of entries in this feed object.
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*
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* @return integer Entry count.
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*/
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public function count()
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{
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return count($this->_entry);
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}
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/**
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* Required by the Iterator interface.
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*
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* @return void
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*/
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public function rewind()
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{
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$this->_entryIndex = 0;
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}
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/**
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* Required by the Iterator interface.
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*
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* @return mixed The current row, or null if no rows.
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*/
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public function current()
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{
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return $this->_entry[$this->_entryIndex];
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}
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/**
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* Required by the Iterator interface.
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*
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* @return mixed The current row number (starts at 0), or NULL if no rows
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*/
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public function key()
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{
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return $this->_entryIndex;
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}
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/**
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* Required by the Iterator interface.
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*
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* @return mixed The next row, or null if no more rows.
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*/
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public function next()
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{
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++$this->_entryIndex;
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}
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/**
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* Required by the Iterator interface.
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*
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* @return boolean Whether the iteration is valid
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*/
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public function valid()
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{
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return 0 <= $this->_entryIndex && $this->_entryIndex < $this->count();
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}
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/**
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* Gets the array of atom:entry elements contained within this
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* atom:feed representation
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*
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* @return array Zend_Gdata_App_Entry array
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*/
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public function getEntry()
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{
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return $this->_entry;
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}
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/**
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* Sets the array of atom:entry elements contained within this
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* atom:feed representation
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*
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* @param array $value The array of Zend_Gdata_App_Entry elements
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* @return Zend_Gdata_App_Feed Provides a fluent interface
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*/
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public function setEntry($value)
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{
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$this->_entry = $value;
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return $this;
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}
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/**
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* Adds an entry representation to the array of entries
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* contained within this feed
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*
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* @param Zend_Gdata_App_Entry An individual entry to add.
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* @return Zend_Gdata_App_Feed Provides a fluent interface
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*/
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public function addEntry($value)
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{
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$this->_entry[] = $value;
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return $this;
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}
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/**
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* Required by the ArrayAccess interface
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*
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* @param int $key The index to set
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* @param Zend_Gdata_App_Entry $value The value to set
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* @return void
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*/
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public function offsetSet($key, $value)
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{
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$this->_entry[$key] = $value;
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}
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/**
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* Required by the ArrayAccess interface
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*
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* @param int $key The index to get
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* @param Zend_Gdata_App_Entry $value The value to set
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*/
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public function offsetGet($key)
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{
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if (array_key_exists($key, $this->_entry)) {
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return $this->_entry[$key];
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}
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}
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/**
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* Required by the ArrayAccess interface
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*
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* @param int $key The index to set
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* @param Zend_Gdata_App_Entry $value The value to set
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*/
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public function offsetUnset($key)
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{
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if (array_key_exists($key, $this->_entry)) {
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unset($this->_entry[$key]);
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}
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}
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/**
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* Required by the ArrayAccess interface
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*
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* @param int $key The index to check for existence
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* @return boolean
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*/
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public function offsetExists($key)
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{
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return (array_key_exists($key, $this->_entry));
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}
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/**
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* Retrieve the next set of results from this feed.
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*
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* @throws Zend_Gdata_App_Exception
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* @return mixed|null Returns the next set of results as a feed of the same
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* class as this feed, or null if no results exist.
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*/
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public function getNextFeed()
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{
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$nextLink = $this->getNextLink();
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if (!$nextLink) {
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require_once 'Zend/Gdata/App/HttpException.php';
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throw new Zend_Gdata_App_Exception('No link to next set ' .
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'of results found.');
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}
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$nextLinkHref = $nextLink->getHref();
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$service = new Zend_Gdata_App($this->getHttpClient());
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return $service->getFeed($nextLinkHref, get_class($this));
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}
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/**
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* Retrieve the previous set of results from this feed.
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*
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* @throws Zend_Gdata_App_Exception
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* @return mixed|null Returns the previous set of results as a feed of
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* the same class as this feed, or null if no results exist.
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*/
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public function getPreviousFeed()
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{
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$previousLink = $this->getPreviousLink();
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if (!$previousLink) {
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require_once 'Zend/Gdata/App/HttpException.php';
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throw new Zend_Gdata_App_Exception('No link to previous set ' .
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'of results found.');
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}
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$previousLinkHref = $previousLink->getHref();
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$service = new Zend_Gdata_App($this->getHttpClient());
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return $service->getFeed($previousLinkHref, get_class($this));
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}
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/**
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* Set the major protocol version that should be used. Values < 1 will
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* cause a Zend_Gdata_App_InvalidArgumentException to be thrown.
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*
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* This value will be propogated to all child entries.
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*
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* @see _majorProtocolVersion
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* @param (int|NULL) $value The major protocol version to use.
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* @throws Zend_Gdata_App_InvalidArgumentException
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*/
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public function setMajorProtocolVersion($value)
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{
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parent::setMajorProtocolVersion($value);
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foreach ($this->entries as $entry) {
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$entry->setMajorProtocolVersion($value);
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}
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}
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/**
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* Set the minor protocol version that should be used. If set to NULL, no
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* minor protocol version will be sent to the server. Values < 0 will
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* cause a Zend_Gdata_App_InvalidArgumentException to be thrown.
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*
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* This value will be propogated to all child entries.
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*
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* @see _minorProtocolVersion
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* @param (int|NULL) $value The minor protocol version to use.
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* @throws Zend_Gdata_App_InvalidArgumentException
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*/
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public function setMinorProtocolVersion($value)
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{
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parent::setMinorProtocolVersion($value);
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foreach ($this->entries as $entry) {
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$entry->setMinorProtocolVersion($value);
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}
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}
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}
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