Current File : /home/bitrix/www/bitrix/modules/sale/lib/internals/collectionbase.php
<?php
/**
* Bitrix Framework
* @package bitrix
* @subpackage sale
* @copyright 2001-2012 Bitrix
*/
namespace Bitrix\Sale\Internals;
use Bitrix\Main\Localization\Loc;
Loc::loadMessages(__FILE__);
/**
* Class CollectionBase
* @package Bitrix\Sale\Internals
*/
abstract class CollectionBase
implements \ArrayAccess, \Countable, \IteratorAggregate
{
protected $collection = array();
/**
* @return \ArrayIterator
*/
public function getIterator()
{
return new \ArrayIterator($this->collection);
}
/**
* Whether a offset exists
*/
public function offsetExists($offset)
{
return isset($this->collection[$offset]) || array_key_exists($offset, $this->collection);
}
/**
* Offset to retrieve
*/
public function offsetGet($offset)
{
if (isset($this->collection[$offset]) || array_key_exists($offset, $this->collection))
{
return $this->collection[$offset];
}
return null;
}
/**
* Offset to set
*/
public function offsetSet($offset, $value)
{
if($offset === null)
{
$this->collection[] = $value;
}
else
{
$this->collection[$offset] = $value;
}
}
/**
* Offset to unset
*/
public function offsetUnset($offset)
{
unset($this->collection[$offset]);
}
/**
* Count elements of an object
*/
public function count()
{
return count($this->collection);
}
/**
* Return the current element
*/
public function current()
{
return current($this->collection);
}
/**
* Move forward to next element
*/
public function next()
{
return next($this->collection);
}
/**
* Return the key of the current element
*/
public function key()
{
return key($this->collection);
}
/**
* Checks if current position is valid
*/
public function valid()
{
$key = $this->key();
return $key !== null;
}
/**
* Rewind the Iterator to the first element
*/
public function rewind()
{
return reset($this->collection);
}
/**
* Checks if collection is empty.
*
* @return bool
*/
public function isEmpty()
{
return empty($this->collection);
}
}
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