<?php
if (!defined('_GNUBOARD_'))
  exit;

class G5_object_cache
{
  public $writes = array();
  public $contents = array();
  public $etcs = array();

  function get($type, $key, $group = 'default')
  {

    switch ($type) {
      case 'bbs':
        $datas = $this->writes;
        break;
      case 'content':
        $datas = $this->contents;
        break;
      default:
        $datas = $this->etcs;
        break;
    }

    if ($this->exists($type, $key, $group)) {
      if (is_object($datas[$group][$key]))
        return clone $datas[$group][$key];
      else
        return $datas[$group][$key];
    }

    return false;
  }

  function exists($type, $key, $group = 'default')
  {

    $return_data = '';

    switch ($type) {
      case 'bbs':
        $datas = $this->writes;
        break;
      case 'content':
        $datas = $this->contents;
        break;
      default:
        $datas = $this->etcs;
        break;
    }

    return isset($datas[$group]) && (isset($datas[$group][$key]) || array_key_exists($key, $datas[$group]));
  }

  function set($type, $key, $data = array(), $group = 'default')
  {
    if (is_object($data))
      $data = clone $data;

    switch ($type) {
      case 'bbs':
        $this->writes[$group][$key] = $data;
        break;
      case 'content':
        $this->contents[$group][$key] = $data;
        break;
      default:
        $this->etcs[$group][$key] = $data;
        break;
    }

  }
  /**
   * cache 데이터 제거
   * @param string $type
   * @param string $key
   * @param string $group
   * @return bool
   */
  function delete($type, $key, $group = 'default')
  {
    if (!$this->exists($type, $key, $group)) {
      return false;
    }

    switch ($type) {
      case 'bbs':
        $datas = &$this->writes;
        break;
      case 'content':
        $datas = &$this->contents;
        break;
      default:
        $datas = &$this->etcs;
        break;
    }

    unset($datas[$group][$key]);

    return true;
  }

}   //end Class;