/// <summary>
/// 设置超时时间
/// </summary>
/// <param name="context"></param>
/// <param name="id"></param>
public override void ResetItemTimeout(HttpContext context, string id)
{
using (SessionStateEF db = new SessionStateEF())
{
var session = db.ASPStateTempSessions.Find(id);
if (session == null)
{
return;
}
session.Expires = DateTime.Now + _expiresTime;
db.SaveChanges();
}
}
/// <summary>
/// 新建或者释放锁定的项并设置Session的值
/// </summary>
/// <param name="context"></param>
/// <param name="id"></param>
/// <param name="item"></param>
/// <param name="lockId"></param>
/// <param name="newItem"></param>
public override void SetAndReleaseItemExclusive(HttpContext context, string id, SessionStateStoreData item, object lockId, bool newItem)
{
using (SessionStateEF db = new SessionStateEF())
{
// 判断是否是新建，如果是新建则和CreateUninitializedItem不同在于Timeout和有初始值。
if (newItem)
{
var session = new ASPStateTempSessions
{
Created = DateTime.Now,
Expires = DateTime.Now.AddMinutes(item.Timeout),
Flags = (int)SessionStateActions.None,
LockDate = DateTime.Now,
Locked = false,
SessionId = id,
LockId = 0,
Timeout = item.Timeout,
SessionItem = Serialize((SessionStateItemCollection)item.Items)
};
db.ASPStateTempSessions.Add(session);
db.SaveChanges();
}
else// 释放锁定的项并设置Session的值
{
var session = db.ASPStateTempSessions.FirstOrDefault(i => i.SessionId == id);
if (session == null)
{
return;
}
session.Expires = DateTime.Now.AddMinutes(item.Timeout);
session.Locked = false;
session.LockId = Convert.ToInt32(lockId);
session.SessionItem = Serialize((SessionStateItemCollection)item.Items);
db.SaveChanges();
}
}
}
/// <summary>
/// 删除Session，会在Session.Abandon()的时候调用
/// </summary>
/// <param name="context"></param>
/// <param name="id"></param>
/// <param name="lockId"></param>
/// <param name="item"></param>
public override void RemoveItem(HttpContext context, string id, object lockId, SessionStateStoreData item)
{
using (SessionStateEF db = new SessionStateEF())
{
var session = db.ASPStateTempSessions.Find(id);
if (session == null)
{
return;
}
db.ASPStateTempSessions.Remove(session);
db.SaveChanges();
}
}
/// <summary>
/// 释放锁定的项，就是把锁定的Session的锁的状态清除掉
/// </summary>
/// <param name="context"></param>
/// <param name="id"></param>
/// <param name="lockId"></param>
public override void ReleaseItemExclusive(HttpContext context, string id, object lockId)
{
using (SessionStateEF db = new SessionStateEF())
{
var session = db.ASPStateTempSessions.Find(id);
if (session == null)
{
return;
}
// 把locked设置为false
session.Locked = false;
session.Expires = DateTime.Now + _expiresTime;
db.SaveChanges();
}
}
/// <summary>
/// 创建未初始化的项，就是初始化Session数据
/// </summary>
/// <param name="context"></param>
/// <param name="id"></param>
/// <param name="timeout"></param>
public override void CreateUninitializedItem(HttpContext context, string id, int timeout)
{
using (SessionStateEF db = new SessionStateEF())
{
var session = new ASPStateTempSessions
{
Created = DateTime.Now,
Expires = DateTime.Now.AddMinutes(timeout),
Flags = (int)SessionStateActions.InitializeItem,
LockDate = DateTime.Now,
Locked = false,
SessionId = id,
LockId = 0,
Timeout = timeout
};
db.ASPStateTempSessions.Add(session);
db.SaveChanges();
}
}