/// <summary>
/// 更新锁对象
/// 这里是通过调用数据行锁进行更新 更新成功 则表示获取到锁
/// </summary>
/// <param name="lockItem"></param>
/// <returns></returns>
public bool UpLockItem(LockObject lockItem)
{
ShowTimeDataContent ctx = new ShowTimeDataContent();
var item = ctx.Lock.Single(c => c.Key == lockItem.Key);
if (item.Lock == 1 && item.Expire > DateTime.Now)
{
return(false);
}
try
{
item.Expire = DateTime.Now.AddMinutes(5);
item.Lock = 1;
var rst = ctx.SaveChanges();
return(rst > 0);
}
catch (Exception)
{
return(false);
}
}
/// <summary>
/// 更新锁对象
/// 这里是通过调用数据行锁进行更新 更新成功 则表示获取到锁
/// </summary>
/// <param name="lockItem"></param>
/// <returns></returns>
public bool UpLockItem(LockObject lockItem)
{
ShowTimeDataContent ctx = new ShowTimeDataContent();
var item = ctx.Lock.Single(c => c.Key == lockItem.Key);
if (item.Lock == 1 && item.Expire > DateTime.Now)
{
return false;
}
try
{
item.Expire = DateTime.Now.AddMinutes(5);
item.Lock = 1;
var rst = ctx.SaveChanges();
return rst > 0;
}
catch (Exception)
{
return false;
}
}
/// <summary>
/// 获取锁对象
/// 先判断锁对象是否否在
/// 如果不存在 则插入锁对象
/// 再获取锁对象
/// </summary>
/// <param name="uniKey"></param>
/// <returns></returns>
public LockObject GetLockItem(string uniKey)
{
ShowTimeDataContent ctx = new ShowTimeDataContent();
LockClient lo = null;
if (!ctx.Lock.Any(c => c.Key == uniKey))
{
try
{
lo = new Objects.Model.LockClient()
{
ClinetCnt = 0,
Expire = DateTime.Now,
Key = uniKey,
Lock = 2,
Type = 1
};
ctx.Lock.Add(lo);
ctx.SaveChanges();
}
catch (Exception ex)
{
}
}
if (lo == null || lo.Id == 0)
{
lo = ctx.Lock.First(c => c.Key == uniKey);
}
LockObject obj = null;
if (lo != null)
{
obj = new LockObject();
obj.Id = lo.Id;
obj.Key = lo.Key;
obj.Lock = lo.Lock;
obj.Type = lo.Type;
obj.Expire = lo.Expire;
}
return(obj);
}
/// <summary>
/// 获取锁对象
/// 先判断锁对象是否否在
/// 如果不存在 则插入锁对象
/// 再获取锁对象
/// </summary>
/// <param name="uniKey"></param>
/// <returns></returns>
public LockObject GetLockItem(string uniKey)
{
ShowTimeDataContent ctx = new ShowTimeDataContent();
LockClient lo = null;
if (!ctx.Lock.Any(c => c.Key == uniKey))
{
try
{
lo = new Objects.Model.LockClient()
{
ClinetCnt = 0,
Expire = DateTime.Now,
Key = uniKey,
Lock = 2,
Type = 1
};
ctx.Lock.Add(lo);
ctx.SaveChanges();
}
catch (Exception ex)
{
}
}
if (lo == null || lo.Id == 0)
{
lo = ctx.Lock.First(c => c.Key == uniKey);
}
LockObject obj = null;
if (lo != null)
{
obj = new LockObject();
obj.Id = lo.Id;
obj.Key = lo.Key;
obj.Lock = lo.Lock;
obj.Type = lo.Type;
obj.Expire = lo.Expire;
}
return obj;
}