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<?php
/**
* @category Horde
* @package Rdo
*/
/**
* Iterator for Horde_Rdo_Base objects that allows relationships and
* decorated objects to be handled gracefully.
*
* @category Horde
* @package Rdo
*/
class Horde_Rdo_Iterator implements Iterator {
/**
* @var Horde_Rdo_Base
*/
private $_rdo;
/**
* List of keys that we'll iterator over. This is the combined
* list of the fields, lazyFields, relationships, and
* lazyRelationships properties from the objects Horde_Rdo_Mapper.
*/
private $_keys = array();
/**
* Current index
*
* @var mixed
*/
private $_index = null;
/**
* Are we inside the array bounds?
*
* @var boolean
*/
private $_valid = false;
/**
* New Horde_Rdo_Iterator for iterating over Rdo objects.
*
* @param Horde_Rdo_Base $rdo The object to iterate over
*/
public function __construct($rdo)
{
$this->_rdo = $rdo;
$m = $rdo->getMapper();
$this->_keys = array_merge($m->fields,
$m->lazyFields,
array_keys($m->relationships),
array_keys($m->lazyRelationships));
}
/**
* Reset to the first key.
*/
public function rewind()
{
$this->_valid = (false !== reset($this->_keys));
}
/**
* Return the current value.
*
* @return mixed The current value
*/
public function current()
{
$key = $this->key();
return $this->_rdo->$key;
}
/**
* Return the current key.
*
* @return mixed The current key
*/
public function key()
{
return current($this->_keys);
}
/**
* Move to the next key in the iterator.
*/
public function next()
{
$this->_valid = (false !== next($this->_keys));
}
/**
* Check array bounds.
*
* @return boolean Inside array bounds?
*/
public function valid()
{
return $this->_valid;
}
}
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