library/Zend/Paginator/Adapter/Iterator.php

@@ -0,0 +1,102 @@
+<?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_Paginator
+ * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id$
+ */
+
+/**
+ * @see Zend_Paginator_Adapter_Interface
+ */
+require_once 'Zend/Paginator/Adapter/Interface.php';
+
+/**
+ * @see Zend_Paginator_SerializableLimitIterator
+ */
+require_once 'Zend/Paginator/SerializableLimitIterator.php';
+
+/**
+ * @category   Zend
+ * @package    Zend_Paginator
+ * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class Zend_Paginator_Adapter_Iterator implements Zend_Paginator_Adapter_Interface
+{
+    /**
+     * Iterator which implements Countable
+     *
+     * @var Iterator
+     */
+    protected $_iterator = null;
+
+    /**
+     * Item count
+     *
+     * @var integer
+     */
+    protected $_count = null;
+
+    /**
+     * Constructor.
+     *
+     * @param  Iterator $iterator Iterator to paginate
+     * @throws Zend_Paginator_Exception
+     */
+    public function __construct(Iterator $iterator)
+    {
+        if (!$iterator instanceof Countable) {
+            /**
+             * @see Zend_Paginator_Exception
+             */
+            require_once 'Zend/Paginator/Exception.php';
+
+            throw new Zend_Paginator_Exception('Iterator must implement Countable');
+        }
+
+        $this->_iterator = $iterator;
+        $this->_count = count($iterator);
+    }
+
+    /**
+     * Returns an iterator of items for a page, or an empty array.
+     *
+     * @param  integer $offset Page offset
+     * @param  integer $itemCountPerPage Number of items per page
+     * @return LimitIterator|array
+     */
+    public function getItems($offset, $itemCountPerPage)
+    {
+        if ($this->_count == 0) {
+            return array();
+        }
+
+        // @link http://bugs.php.net/bug.php?id=49906 | ZF-8084
+        // return new LimitIterator($this->_iterator, $offset, $itemCountPerPage);
+        return new Zend_Paginator_SerializableLimitIterator($this->_iterator, $offset, $itemCountPerPage);
+    }
+
+    /**
+     * Returns the total number of rows in the collection.
+     *
+     * @return integer
+     */
+    public function count()
+    {
+        return $this->_count;
+    }
+}