Subversion-Projekte lars-tiefland.php_share

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Revision Autor Zeilennr. Zeile
1 lars 1 
<?php
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/*
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 *  $Id: Iterator.php 7490 2010-03-29 19:53:27Z jwage $
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 *
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 * This software consists of voluntary contributions made by many individuals
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 * and is licensed under the LGPL. For more information, see
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 * <http://www.doctrine-project.org>.
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 */
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/**
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 * Doctrine_Collection_Iterator
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 * iterates through Doctrine_Collection
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 *
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 * @package     Doctrine
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 * @subpackage  Collection
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 * @license     http://www.opensource.org/licenses/lgpl-license.php LGPL
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 * @link        www.doctrine-project.org
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 * @since       1.0
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 * @version     $Revision: 7490 $
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 * @author      Konsta Vesterinen <kvesteri@cc.hut.fi>
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 */
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abstract class Doctrine_Collection_Iterator implements Iterator
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{
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    /**
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     * @var Doctrine_Collection $collection
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     */
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    protected $collection;
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    /**
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     * @var array $keys
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     */
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    protected $keys;
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    /**
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     * @var mixed $key
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     */
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    protected $key;
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    /**
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     * @var integer $index
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     */
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    protected $index;
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    /**
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     * @var integer $count
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     */
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    protected $count;
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    /**
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     * constructor
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     * @var Doctrine_Collection $collection
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     */
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    public function __construct($collection)
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    {
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        $this->collection = $collection;
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        $this->keys       = $this->collection->getKeys();
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        $this->count      = $this->collection->count();
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    }
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    /**
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     * rewinds the iterator
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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->index = 0;
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        $i = $this->index;
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        if (isset($this->keys[$i])) {
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            $this->key   = $this->keys[$i];
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        }
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    }
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    /**
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     * returns the current key
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     *
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     * @return integer
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     */
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    public function key()
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    {
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        return $this->key;
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    }
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    /**
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     * returns the current record
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     *
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     * @return Doctrine_Record
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     */
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    public function current()
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    {
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        return $this->collection->get($this->key);
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    }
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    /**
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     * advances the internal pointer
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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->index++;
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        $i = $this->index;
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        if (isset($this->keys[$i])) {
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            $this->key   = $this->keys[$i];
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        }
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    }
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}