protected function _set($key, $data, $group, $tenant_id, $expires = null)
{
if (empty($expires)) {
$expires = $this->default_expires;
}
$data = $this->_serialize(array('data' => $data, 'expires' => time() + intval($expires)));
$this->_delete($key, $group, $tenant_id);
$r = $this->_db->insert($this->_table, array($this->_table . '.key' => $key, $this->_table . '.group' => $group, $this->_table . '.value' => $data, $this->_table . '.tenant_id' => $tenant_id));
return $this->_db->affected_rows() > 0;
}
public function update()
{
$this->_set_row();
$this->db->update($this->_forged_join());
$this->_clear_forged_join();
if ($this->_record_is_changed()) {
return $this->db->affected_rows() > 0;
}
return true;
}
/**
* 删除数据
* @param array|string $where 条件
* @param int $limit 删除数量限制，默认不限制
* @return int $delete_count 删除的记录数
*/
public function delete($where, $limit = NULL)
{
if (!is_null($limit) && is_numeric($limit)) {
$this->where($where);
if (is_numeric($limit)) {
$this->db->limit($limit);
}
$this->db->delete($this->_name);
return $this->db->affected_rows();
}
$this->db->delete($this->_name, $where);
return $this->db->affected_rows();
}
