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<?php
/*
* $Id: Iterator.php 5798 2009-06-02 15:10:46Z piccoloprincipe $
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information, see
* <http://www.phpdoctrine.org>.
*/
/**
* Doctrine_Collection_Iterator
* iterates through Doctrine_Collection
*
* @package Doctrine
* @subpackage Collection
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link www.phpdoctrine.org
* @since 1.0
* @version $Revision: 5798 $
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
*/
abstract class Doctrine_Collection_Iterator implements Iterator
{
/**
* @var Doctrine_Collection $collection
*/
protected $collection;
/**
* @var array $keys
*/
protected $keys;
/**
* @var mixed $key
*/
protected $key;
/**
* @var integer $index
*/
protected $index;
/**
* @var integer $count
*/
protected $count;
/**
* constructor
* @var Doctrine_Collection $collection
*/
public function __construct($collection)
{
$this->collection = $collection;
$this->keys = $this->collection->getKeys();
$this->count = $this->collection->count();
}
/**
* rewinds the iterator
*
* @return void
*/
public function rewind()
{
$this->index = 0;
$i = $this->index;
if (isset($this->keys[$i])) {
$this->key = $this->keys[$i];
}
}
/**
* returns the current key
*
* @return integer
*/
public function key()
{
return $this->key;
}
/**
* returns the current record
*
* @return Doctrine_Record
*/
public function current()
{
return $this->collection->get($this->key);
}
/**
* advances the internal pointer
*
* @return void
*/
public function next()
{
$this->index++;
$i = $this->index;
if (isset($this->keys[$i])) {
$this->key = $this->keys[$i];
}
}
}
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