<?php

namespace ctiso\Database;
use PDO;

class StatementIterator implements Iterator
{

    private $result;
    private $pos = 0;
    private $fetchmode;
    private $row_count;
    
    public function __construct(/*.Database_PDOStatement.*/ $rs) {
        $this->result = $rs;
		$this->row_count = $rs->getRecordCount();
    }
    
    function rewind() {        
        $this->pos = 0;
    }
    
    function valid() {
		return ($this->pos < $this->row_count);
    }
    
    function key() {
        return $this->pos;
    }
    
    function current() {
       if (!isset($this->result->cache[$this->pos])) {
           $this->result->cache[$this->pos] = $this->result->fetch(PDO::FETCH_ASSOC);
       } 
       return $this->result->cache[$this->pos];
    }
    
    function next() {
        $this->pos++;
    }

    function seek($index) {
		$this->pos = $index;
    }

    function count() {
		return $this->row_count;
    }
}