CodeIgniter 3 Session Doctrine 2 Entity

Sessions.php

<?php
/**
 * @Entity
 * @Table(name="sessions", indexes={@index(name="sessions_timestamp", columns={"timestamp"})})
 */
class Sessions
{
    /**
     * @Id
     * @Column(name="id", type="string", length=40)
     * @var string
     */
    private $id;

    /**
     * @Column(name="ip_address", type="string", length=45)
     * @var string
     */
    private $ipAddress;

    /**
     * @Column(name="timestamp", type="integer", options={"default": 0, "unsigned": true})
     * @var integer
     */
    private $timestamp;

    /**
     * @Column(name="data", type="blob", length=65535, nullable=false)
     * @var string
     */
    private $data;


}