/// <summary>
/// 从数据库中加载
/// </summary>
/// <param name="userID"></param>
/// <returns></returns>
private static UserRecentDataCategory LoadFromDB(string userID, string category)
{
userID.CheckStringIsNullOrEmpty("userID");
category.CheckStringIsNullOrEmpty("category");
string sql = string.Format("SELECT DATA FROM USER_RECENT_DATA WHERE USER_ID = {0} AND CATEGORY = {1}",
TSqlBuilder.Instance.CheckQuotationMark(userID, true),
TSqlBuilder.Instance.CheckQuotationMark(category, true)
);
UserRecentDataCategory result = null;
string settings = (string)DbHelper.RunSqlReturnScalar(sql, ConnectionDefine.UserRelativeInfoConnectionName);
if (settings.IsNotEmpty())
{
XElementFormatter formatter = new XElementFormatter();
formatter.OutputShortType = false;
XElement root = XElement.Parse(settings);
result = (UserRecentDataCategory)formatter.Deserialize(root);
}
return(result);
}
private static UserRecentDataCategory GetDefaultCategorySettings(string category)
{
category.CheckStringIsNullOrEmpty("category");
UserRecentDataCategory settings = new UserRecentDataCategory();
settings.InitFromConfiguration(UserRecentDataConfigurationSection.GetConfig().Categories[category]);
return(settings);
}
/// <summary>
/// 从数据库获取指定类别数据
/// </summary>
/// <param name="userId"></param>
/// <param name="category"></param>
/// <returns></returns>
public static UserRecentDataCategory LoadSettings(string userId, string category)
{
UserRecentDataCategory settings = GetDefaultCategorySettings(category);
UserRecentDataCategory settingsFromDB = LoadFromDB(userId, category);
if (settingsFromDB != null)
{
settings.ImportValues(settingsFromDB);
}
return(settings);
}
/// <summary>
/// 导入别的UserSettings的属性值，如果类别或属性名称不存在，则忽略
/// </summary>
/// <param name="srcSettings"></param>
private void ImportProperties(UserRecentData srcSettings)
{
foreach (UserRecentDataCategory category in this.Categories)
{
if (srcSettings.Categories.ContainsKey(category.Name))
{
UserRecentDataCategory srcCategory = srcSettings.Categories[category.Name];
if (srcCategory != null)
{
category.ImportValues(srcCategory);
}
}
}
}
/// <summary>
/// 导入分类的数据
/// </summary>
/// <param name="srcCategory"></param>
/// <remarks>没有定义的或者定义不一致的被忽略,将不会清空现有数据。数据将被附加到集合的末尾</remarks>
internal void ImportValues(UserRecentDataCategory srcCategory)
{
if (this._definedProperties != null)
{
foreach (PropertyValueCollection item in srcCategory.Items)
{
var newitem = this.Items.CreateItem();
foreach (var define in _definedProperties)
{
newitem[define.Name].StringValue = item[define.Name].StringValue;
}
this.Items.Add(newitem);
}
}
}
public UserRecentDataCategoryItemCollection(UserRecentDataCategory owner)
{
this.owner = owner;
}
