/// <summary>
/// 检测是否某一项改变
/// </summary>
/// <param name="hashModel"></param>
/// <param name="key"></param>
/// <returns></returns>
public static bool CheckChanged(this IHashDictionary hashModel, string key)
{
if (hashModel == null || key == null)
{
return(false);
}
var hashValues = hashModel.GetHashValues();
if (!hashValues.ContainsKey(key))
{
return(false);
}
var hashValue = hashValues[key];
var properties = hashModel.GetProperties();
if (!properties.ContainsKey(key))
{
//be removed!
return(true);
}
var sameHash = properties[key].VerifyObjectHash(hashValue.Hash);
if (!sameHash)
{
//hash不一样，一定变化
return(true);
}
//哈希值虽然一样，但只要不是初始版本的，都视为变化（新增）
var initVersion = hashModel.GetVersions().LastOrDefault();
return(initVersion != hashValue.Version);
}
/// <summary>
/// 检测是否有任何项改变
/// </summary>
/// <param name="hashModel"></param>
/// <returns></returns>
public static bool CheckAnyChanged(this IHashDictionary hashModel)
{
if (hashModel == null)
{
return(false);
}
var hashValues = hashModel.GetHashValues();
foreach (var hashValue in hashValues)
{
var changedForKey = CheckChanged(hashModel, hashValue.Key);
if (changedForKey)
{
return(true);
}
}
return(false);
}