/// <summary>
/// 导入
/// </summary>
/// <typeparam name="T">模板类</typeparam>
/// <param name="fileUrl">Excel文件绝对地址</param>
/// <param name="delegateNotExistInDatabase">数据库校验委托，标记了数据库重复校验特性则必填</param>
/// <returns></returns>
public static List <ExcelDataRow> Validate <T>(string fileUrl, Func <DatabaseFilterContext, bool> delegateNotExistInDatabase = null)
where T : class, new()
{
Init(fileUrl);
List <ExcelDataRow> rows = ExcelConverter.Convert <T>(Sheet, HeaderRow, 1);
AndFilter andFilter = new AndFilter()
{
filters = FiltersFlyWeight.CreateFilters <T>(HeaderRow)
};
FilterContext context = new FilterContext()
{
DelegateNotExistInDatabase = delegateNotExistInDatabase,
TypeFilterInfo = TypeFilterInfoFlyweight.CreateInstance(typeof(T), HeaderRow)
};
rows = andFilter.Filter(rows, context);
return(rows);
}
public List <ExcelDataRow> Filter(List <ExcelDataRow> excelDataRows, FilterContext context)
{
List <KeyValuePair <int, string> > kvps = new List <KeyValuePair <int, string> >();
excelDataRows.ToList().ForEach(r => r.DataCols.ForEach(c =>
{
KeyValuePair <int, string> kvp = new KeyValuePair <int, string>(c.ColIndex, c.ColValue);
if (r.IsValid)
{
var attr = c.GetFilterAttr <DuplicationAttribute>(context.TypeFilterInfo);
if (attr != null)
{
r.SetState(!kvps.Contains(kvp), c, attr.ErrorMsg);
}
}
kvps.Add(kvp);
}));
return(excelDataRows);
}
public List <ExcelDataRow> Filter(List <ExcelDataRow> excelDataRows, FilterContext context)
{
if (context.DelegateNotExistInDatabase == null)
{
throw new ArgumentNullException("please set delegate of database filter first");
}
excelDataRows.Where(r => r.IsValid).ToList().ForEach(r => r.DataCols.ForEach(c =>
{
var attr = c.GetFilterAttr <DatabaseExistAttribute>(context.TypeFilterInfo);
if (attr != null)
{
r.SetState(context.DelegateNotExistInDatabase(
new DatabaseFilterContext()
{
TableName = attr.TableName,
FieldName = attr.FieldName,
Value = c.ColValue
}), c, attr.ErrorMsg);
}
}));
return(excelDataRows);
}