/// <summary>
/// 添加变更
/// </summary>
/// <param name="expression">属性表达式,范例：t => t.Name</param>
/// <param name="newValue">新值,范例：newEntity.Name</param>
protected void AddChange <TProperty, TValue>(Expression <Func <T, TProperty> > expression, TValue newValue)
{
var member = Lambda.GetMemberExpression(expression);
var name = Lambda.GetMemberName(member);
var description = Reflection.GetDisplayNameOrDescription(member.Member);
var value = member.Member.GetPropertyValue(this);
AddChange(name, description, Convert.To <TValue>(value), newValue);
}
/// <summary>
/// 添加描述
/// </summary>
/// <param name="expression">属性表达式,范例：t => t.Name</param>
protected void AddDescription <TProperty>(Expression <Func <T, TProperty> > expression)
{
var member = Lambda.GetMember(expression);
var description = Reflection.GetDisplayNameOrDescription(member);
var value = member.GetPropertyValue(this);
if (Reflection.IsBool(member))
{
value = Convert.ToBool(value).Description();
}
AddDescription(description, value);
}
/// <summary>
/// 转换为int
/// </summary>
/// <param name="obj">数据</param>
public static int ToInt(this string obj)
{
return(Convert.ToInt(obj));
}
/// <summary>
/// 转换为可空bool
/// </summary>
/// <param name="obj">数据</param>
public static bool?ToBoolOrNull(this string obj)
{
return(Convert.ToBoolOrNull(obj));
}
/// <summary>
/// 转换为Guid集合
/// </summary>
/// <param name="obj">数据,范例: "83B0233C-A24F-49FD-8083-1337209EBC9A,EAB523C6-2FE7-47BE-89D5-C6D440C3033A"</param>
public static List <Guid> ToGuidList(this string obj)
{
return(Convert.ToGuidList(obj));
}
/// <summary>
/// 转换为可空Guid
/// </summary>
/// <param name="obj">数据</param>
public static Guid?ToGuidOrNull(this string obj)
{
return(Convert.ToGuidOrNull(obj));
}
/// <summary>
/// 获取行数
/// </summary>
protected virtual int GetCount(IDbConnection connection)
{
return(Convert.ToInt(ToScalar(connection, GetCountSql(), Params)));
}
/// <summary>
/// 转换为可空double
/// </summary>
/// <param name="obj">数据</param>
public static double?ToDoubleOrNull(this string obj)
{
return(Convert.ToDoubleOrNull(obj));
}
/// <summary>
/// 转换为可空long
/// </summary>
/// <param name="obj">数据</param>
public static long?ToLongOrNull(this string obj)
{
return(Convert.ToLongOrNull(obj));
}
/// <summary>
/// 查找实体列表,不跟踪
/// </summary>
/// <param name="ids">逗号分隔的标识列表，范例："1,2"</param>
public List <TEntity> FindByIdsNoTracking(string ids)
{
var idList = Convert.ToList <TKey>(ids);
return(FindByIdsNoTracking(idList));
}
/// <summary>
/// 查找实体列表,不跟踪
/// </summary>
/// <param name="ids">逗号分隔的标识列表，范例："1,2"</param>
public async Task <List <TEntity> > FindByIdsNoTrackingAsync(string ids)
{
var idList = Convert.ToList <TKey>(ids);
return(await FindByIdsNoTrackingAsync(idList));
}
/// <summary>
/// 获取整型
/// </summary>
/// <param name="connection">数据库连接</param>
public int ToInt(IDbConnection connection = null)
{
return(Convert.ToInt(ToScalar(connection, GetSql(), Params)));
}
/// <summary>
/// 获取可空整型
/// </summary>
/// <param name="connection">数据库连接</param>
public async Task <int?> ToIntOrNullAsync(IDbConnection connection = null)
{
return(Convert.ToIntOrNull(await ToScalarAsync(connection, GetSql(), Params)));
}
/// <summary>
/// 获取行数
/// </summary>
protected virtual async Task <int> GetCountAsync(IDbConnection connection)
{
return(Convert.ToInt(await ToScalarAsync(connection, GetCountSql(), Params)));
}
/// <summary>
/// 转换为可空int
/// </summary>
/// <param name="obj">数据</param>
public static int?ToIntOrNull(this string obj)
{
return(Convert.ToIntOrNull(obj));
}
/// <summary>
/// 转换为日期
/// </summary>
/// <param name="obj">数据</param>
public static DateTime ToDate(this string obj)
{
return(Convert.ToDate(obj));
}
/// <summary>
/// 转换为long
/// </summary>
/// <param name="obj">数据</param>
public static long ToLong(this string obj)
{
return(Convert.ToLong(obj));
}
/// <summary>
/// 转换为可空日期
/// </summary>
/// <param name="obj">数据</param>
public static DateTime?ToDateOrNull(this string obj)
{
return(Convert.ToDateOrNull(obj));
}
/// <summary>
/// 转换为double
/// </summary>
/// <param name="obj">数据</param>
public static double ToDouble(this string obj)
{
return(Convert.ToDouble(obj));
}
/// <summary>
/// 转换为Guid
/// </summary>
/// <param name="obj">数据</param>
public static Guid ToGuid(this string obj)
{
return(Convert.ToGuid(obj));
}
/// <summary>
/// 转换为decimal
/// </summary>
/// <param name="obj">数据</param>
public static decimal ToDecimal(this string obj)
{
return(Convert.ToDecimal(obj));
}
/// <summary>
/// 克隆副本
/// </summary>
public virtual TValueObject Clone()
{
return(Convert.To <TValueObject>(MemberwiseClone()));
}
