<?php
class RowsetIterator extends ArrayIterator
{
    protected $_rowset = null;
    protected $_key = null;
    protected $_value = null;
    
    public function __construct(Zend_Db_Table_Rowset $rowset, $key, $value) {
        $this->_rowset = $rowset;
        $this->_key = $key;
        $this->_value = $value;
    }
    
    public function current() {
        $value = $this->_value;
        $current = $this->_rowset->current();
        return $current->$value;
    }
    
    public function key() {
        $key = $this->_key;
        $current = $this->_rowset->current();
        return $current->$key;
    }
    
    public function next() {
        $this->_rowset->next();
    }
    
    public function rewind() {
        $this->_rowset->rewind();
    }
    
    public function seek($position) {
        $this->_rowset->seek($position);
    }
    
    public function valid() {
        return $this->_rowset->valid();
    }
}