/// <summary>
/// 传入客户端数据版本号，接口判断版本是否过期，如过期则返回异常
/// 未过期则返回变动的数据及变动类型
/// 如变动数据量很大可只返回部分数据
/// </summary>
/// <returns></returns>
public InterfaceRet ReadData(string data)
{
DataVersion version = Newtonsoft.Json.JsonConvert.DeserializeObject <DataVersion>(data);
if (ChangeLogNotifyer.CheckVersionExpires(version))
{
throw new Exception("数据版本已过期");
}
ChangeLogNotifyer logNotifyer = new ChangeLogNotifyer();
List <ChangeLog> logs = new List <ChangeLog>();
logNotifyer.GetChangeLog(version.Identifier, version.Version + 1, 10, logs);
SyncObj syncobj;
List <SyncObj> retList = new List <SyncObj>();
foreach (var log in logs)
{
syncobj = new SyncObj();
retList.Add(syncobj);
syncobj.Log = log;
if (log.ChangeType != ChangeType.ctDel)
{
syncobj.Obj = dbAccess.Get(log.Key);
}
}
_ret.data = retList;
return(_ret);
}
public static Boolean CheckVersionExpires(DataVersion version)
{
int minVersion, maxVersion;
ChangeLogNotifyer.GetVersionRange(version.Identifier, out minVersion, out maxVersion);
return(version.Version < minVersion);
}