public FlatDataModel flhz(List <string> classifynames, params FLHZ_OPERATION[] par)
{
FlatDataModel t_fdm = (FlatDataModel)this.Clone();
List <List <DataUnit> > bunches = t_fdm.make_bunch(classifynames);
foreach (FLHZ_OPERATION item in par)
{
//先检查fieldname是否合法
if (!t_fdm.vn.Contains(item.fieldname))
{
throw new ArgumentException(string.Format("不存在字段名{0}", item.fieldname));
}
//处理newname的默认值
if (item.newname.Length == 0)
{
item.newname = item.fieldname;
}
}
//开始统计
FlatDataModel rt = new FlatDataModel();
foreach (List <DataUnit> thisbunch in bunches)
{
//先写入classfynames
DataUnit du = new DataUnit(rt);
foreach (string n in classifynames)
{
du.data.Add(n, thisbunch[0].data[n]);
}
//再写入统计数据
foreach (FLHZ_OPERATION op in par)
{
//把List<DataUnit>中fieldname提取出来
List <object> lo = new List <object>();
foreach (DataUnit u in thisbunch)
{
lo.Add(u.data[op.fieldname]);
}
//统计
du.data.Add(op.newname, op.func(lo));
}
rt.units.Add(du);
}
//整理vn
foreach (string item in classifynames)
{
rt.vn.Add(item);
}
foreach (FLHZ_OPERATION item in par)
{
rt.vn.Add(item.newname);
}
return(rt);
}
/// <summary>
/// 浅拷贝
/// 如果是字符串和数 拷贝后与源完全独立
/// 如果是对象 就是互连的
/// </summary>
/// <returns></returns>
public object Clone()
{
FlatDataModel fdm = new FlatDataModel();
this.vn.ForEach(i => fdm.vn.Add(i));//复制vn
DataUnit u;
foreach (DataUnit item in this)
{
u = (DataUnit)item.Clone();
u.fdm = fdm;
fdm.units.Add(u);
}
return(fdm);
}
public DataUnit(FlatDataModel f)
{
this.fdm = f;
}
/// <summary>
/// 从其他模型中添加字段
/// </summary>
/// <param name="link_field">连接字段</param>
/// <param name="add_fields">添加字段</param>
/// <param name="other_model">其他模型</param>
/// <param name="default_value">默认值，在找不到对应dataunit的时候使用</param>
public void add_field_from_other_model(string link_field, string[] add_fields, FlatDataModel other_model, object default_value)
{
//检查字段名的合法性
if (!this.vn.Contains(link_field) || !other_model.vn.Contains(link_field))
{
throw new ArgumentException(string.Format("字段名{0}不存在。", link_field));
}
foreach (var item in add_fields)
{
if (!other_model.vn.Contains(item))
{
throw new ArgumentException(string.Format("字段名{0}不存在。", item));
}
if (this.vn.Contains(item))
{
throw new ArgumentException(string.Format("字段名{0}已经存在。", item));
}
}
//开始连接
foreach (DataUnit u in this)
{
var umatch = other_model.find_one(delegate(DataUnit tu)
{
dynamic d1 = tu.data[link_field];
dynamic d2 = u.data[link_field];
return(d1 == d2);
});
if (null == umatch)
{
//没找到
foreach (string item in add_fields)
{
u.data.Add(item, default_value);
}
}
else//找到
{
foreach (string item in add_fields)
{
u.data.Add(item, umatch.data[item]);
}
}
}
//更新vn
foreach (string item in add_fields)
{
this.vn.Add(item);
}
}
/// <summary>
/// 从excel文件中载入
/// 第一行作为vn 后续行作为数据
/// </summary>
/// <param name="pathname"></param>
/// <param name="sheetname"></param>
/// <returns></returns>
public static FlatDataModel load_from_excel(string pathname, string sheetname = null)
{
//create the Application object we can use in the member functions.
Microsoft.Office.Interop.Excel.Application _excelApp = new Microsoft.Office.Interop.Excel.Application();
_excelApp.Visible = false;
string fileName = pathname;
//open the workbook
Workbook workbook = _excelApp.Workbooks.Open(fileName,
Type.Missing, Type.Missing, Type.Missing, Type.Missing,
Type.Missing, Type.Missing, Type.Missing, Type.Missing,
Type.Missing, Type.Missing, Type.Missing, Type.Missing,
Type.Missing, Type.Missing);
//select the first sheet
Worksheet worksheet;
if (null == sheetname)
{
worksheet = (Worksheet)workbook.Worksheets[1];
}
else
{
worksheet = (Worksheet)workbook.Worksheets[sheetname];
}
//find the used range in worksheet
Microsoft.Office.Interop.Excel.Range excelRange = worksheet.UsedRange;
//get an object array of all of the cells in the worksheet (their values)
object[,] valueArray = (object[, ])excelRange.get_Value(
XlRangeValueDataType.xlRangeValueDefault);
//access the cells 创建flatdatamodel
FlatDataModel fdm = new FlatDataModel();
for (int row = 1; row <= worksheet.UsedRange.Rows.Count; ++row)
{
DataUnit du = new DataUnit(fdm);
for (int col = 1; col <= worksheet.UsedRange.Columns.Count; ++col)
{
//access each cell
object thiscell = valueArray[row, col];
if (row == 1)//第一行 设定vn
{
fdm.vn.Add(thiscell.ToString());
}
else
{//其他行 赋值du
du.data.Add(fdm.vn[col - 1], thiscell);
}
//System.Diagnostics.Debug.Print(valueArray[row, col].ToString());
}
if (du.data.Count != 0)
{
fdm.units.Add(du);
}
}
//clean up stuffs
workbook.Close(false, Type.Missing, Type.Missing);
System.Runtime.InteropServices.Marshal.ReleaseComObject(workbook);
_excelApp.Quit();
System.Runtime.InteropServices.Marshal.FinalReleaseComObject(_excelApp);
return(fdm);
}