/// <summary>
/// 直接返回表中的 Json 字符串，不进行反序列化
/// </summary>
/// <param name="key"></param>
/// <returns></returns>
public string Restore(string key)
{
lock (persistLock) {
var persist = Persists.Where(p => p.Key == key).Take(1).FirstOrDefault();
return(persist?.Json);
}
}
/// <summary>
/// 保存一批 Json 对象到表中
/// </summary>
/// <param name="persists"></param>
public void SavePersist(IList <Persist> persists)
{
lock (persistLock) {
Persists.AddRange(persists);
this.SaveChanges();
}
}
/// <summary>
/// 保存一个 Json 对象到表中
/// </summary>
/// <param name="persist"></param>
public void SavePersist(Persist persist)
{
lock (persistLock) {
Persists.AddOrUpdate(persist);
this.SaveChanges();
}
}
/// <summary>
/// 根据 Key 移除一个 Json 对象
/// </summary>
/// <param name="key"></param>
public void RemovePersist(string key)
{
lock (persistLock) {
var delPersist = Persists.FirstOrDefault(s => s.Key == key);
if (delPersist != null)
{
Persists.Remove(delPersist);
}
SaveChanges();
}
}
/// <summary>
/// 将表中的 Json 对象反序列化成对象
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <returns></returns>
public T Restore <T>(string key)
{
lock (persistLock) {
var ret = default(T);
var persist = Persists.FirstOrDefault(p => p.Key == key);
if (persist != null)
{
var json = persist.Json;
ret = JsonConvert.DeserializeObject <T>(json);
}
return(ret);
}
}
