/// <summary> /// 导入时:把中文列头翻译成英文列头(同时处理列头结构)。 /// 并返回字典:key:列头,value:格式化名 /// </summary> public static Dictionary <string, string> FormatterTitle(MDataTable dt, MDataRow info, string objName) { if (info == null) { return(GridConfig.SetHeaderField(dt, objName)); } else { Dictionary <string, string> formatDic = new Dictionary <string, string>(StringComparer.OrdinalIgnoreCase); MDataTable infoConfig = GetExcelInfo(info.Get <string>(0)); if (infoConfig != null) { //附加自定义列。 foreach (var configRow in infoConfig.Rows) { string formatter = configRow.Get <string>(Config_ExcelInfo.Formatter); if (!string.IsNullOrEmpty(formatter) && formatter[0] != '#')//增加默认值的列。 { string excelName = configRow.Get <string>(Config_ExcelInfo.ExcelName); if (!dt.Columns.Contains(excelName)) { MCellStruct ms = new MCellStruct(excelName, System.Data.SqlDbType.NVarChar); ms.TableName = configRow.Get <string>(Config_ExcelInfo.TableName); dt.Columns.Insert(dt.Columns.Count - 1, ms); } } } MDataRow infoRow; foreach (MCellStruct item in dt.Columns) { infoRow = infoConfig.FindRow(Config_ExcelInfo.ExcelName + "='" + item.ColumnName + "'"); if (infoRow == null && item.ColumnName.IndexOf('_') > 0) // 兼容只找一级的映射列。 { string columnName = item.ColumnName.Split('_')[0]; infoRow = infoConfig.FindRow(Config_ExcelInfo.ExcelName + "='" + columnName + "'"); } if (infoRow != null) { string field = infoRow.Get <string>(Config_ExcelInfo.Field); if (string.IsNullOrEmpty(field)) { continue; } item.Description = item.ColumnName;//把中文列名放到描述里。 item.TableName = infoRow.Get <string>(Config_ExcelInfo.TableName); if (string.Compare(item.ColumnName, field, StringComparison.OrdinalIgnoreCase) != 0) { int index = dt.Columns.GetIndex(field); if (index < 0) { item.ColumnName = field;// } else // 字段同名 { item.ColumnName = item.TableName + "." + field; //修改上一个,也增加表名。 dt.Columns[index].ColumnName = dt.Columns[index].TableName + "." + dt.Columns[index].ColumnName; } } string formatter = infoRow.Get <string>(Config_ExcelInfo.Formatter); if (!string.IsNullOrEmpty(formatter)) // 需要格式化的项 { if (formatter.Length > 2 && formatter[0] == '#') { //item.SqlType = System.Data.SqlDbType.NVarChar;//重置数据类型(int数据将格式成文本) formatDic.Add(item.ColumnName, formatter.Substring(1).Split(new string[] { "=>" }, StringSplitOptions.None)[0]); } else { item.DefaultValue = SqlCode.FormatPara(formatter);//如果不是#开头的,设置为默认值(同时处理@参数)。 } } } } } return(formatDic); } }
/// <summary> /// 批量更新或插入。 /// </summary> /// <param name="dt"></param> /// <param name="excelRow"></param> /// <returns></returns> public static bool AcceptChanges(MDataTable dt, MDataRow excelRow, string objName = null) { if (excelRow == null) { MDataTable dtImportUnique = GridConfig.GetList(objName, GridConfig.SelectType.ImportUnique); string[] names = null; if (dtImportUnique != null && dtImportUnique.Rows.Count > 0) { names = new String[dtImportUnique.Rows.Count]; for (int i = 0; i < dtImportUnique.Rows.Count; i++) { names[i] = dtImportUnique.Rows[i].Get <string>(Config_Grid.Field); } } return(dt.AcceptChanges(AcceptOp.Auto, CrossDb.GetConn(dt.TableName), names)); } bool result = true; //获取相关配置 string[] tables = excelRow.Get <string>(Config_Excel.TableNames).Split(','); MDataTable configTable = GetExcelInfo(excelRow.Get <string>(Config_Excel.ExcelID)); Dictionary <string, string> rowPrimaryValue = new Dictionary <string, string>(); //存档每个表每行的主键值。 Dictionary <string, string> wherePrimaryValue = new Dictionary <string, string>(); //存档where条件对应的主键值。 int acceptType = excelRow.Get <int>(Config_Excel.AcceptType); using (MAction action = new MAction(CrossDb.GetEnum(tables[0]))) { action.SetAopState(AopOp.CloseAll); action.BeginTransation(); AppConfig.Debug.OpenDebugInfo = false; IExcelConfig excelConfigExtend = ExcelConfigFactory.GetExcelConfigExtend(); foreach (var table in tables) { GC.Collect();//后面的Fill查询代码循环上万次会增长太多内存,提前调用,能降低内存。 action.ResetTable(table); for (int i = 0; i < dt.Rows.Count; i++) { action.Data.Clear(); var row = dt.Rows[i]; foreach (var cell in row) //遍历所有数据行 { if (cell.Struct.TableName != null && cell.Struct.TableName.ToLower() == table.ToLower()) //过滤出属于本表的字段。 { string[] items = cell.ColumnName.Split('.'); string columnName = items[items.Length - 1]; action.Set(columnName, cell.Value); } } #region 检测是否需要插入外键。 MDataTable foreignTable = configTable.FindAll("TableName='" + table + "' and IsForeignkey=1"); if (foreignTable != null) { foreach (var foreignRow in foreignTable.Rows) { string formatter = foreignRow.Get <string>("Formatter", "").Trim('.'); string fTableName = foreignRow.Get <string>("ForeignTable"); if (string.IsNullOrEmpty(formatter)) { //获取主键外值键 string key = fTableName + i; if (rowPrimaryValue.ContainsKey(key)) { string value = rowPrimaryValue[key]; action.Set(foreignRow.Get <string>("Field"), value); } } else // 从其它自定义列取值。 { MDataCell cell = row[formatter]; cell = cell ?? row[fTableName + "." + formatter]; if (cell != null) { action.Set(foreignRow.Get <string>("Field"), cell.Value); } } } foreignTable = null; } #endregion #region //获取唯一联合主键,检测是否重复 string where = string.Empty; MDataRowCollection rowList = configTable.FindAll("TableName='" + table + "' and IsUnique=1"); if (rowList != null && rowList.Count > 0) { bool isUniqueOr = excelRow.Get <bool>(Config_Excel.WhereType); List <MDataCell> cells = new List <MDataCell>(); StringBuilder errText = new StringBuilder(); int errorCount = 0; foreach (var item in rowList) { var cell = action.Data[item.Get <string>(Config_ExcelInfo.Field)]; if (cell != null) { if (cell.IsNullOrEmpty) // 唯一主键是必填写字段 { errorCount++; errText.Append("[" + LangConst.The + "" + (i + 1) + LangConst.Row + "]:" + cell.Struct.ColumnName + "[" + cell.Struct.Description + "]" + LangConst.CantBeEmpty + "!\r\n"); } else { cells.Add(cell); } } } if (errorCount > 0) { if (!isUniqueOr || errorCount == rowList.Count) { result = false; dt.DynamicData = new Exception(errText.ToString()); goto err; } } MDataCell[] item2s = cells.ToArray(); where = action.GetWhere(!isUniqueOr, item2s); item2s = null; rowList = null; } if (!string.IsNullOrEmpty(where)) { MDataRow data = action.Data.Clone(); action.SetSelectColumns(action.Data.PrimaryCell.ColumnName); if (action.Fill(where))//根据条件查出主键ID (数据被清空) { string key = table + where; if (wherePrimaryValue.ContainsKey(key)) { rowPrimaryValue.Add(table + i, wherePrimaryValue[key]);//记录上一个主键值。 } else { rowPrimaryValue.Add(table + i, action.Get <string>(action.Data.PrimaryCell.ColumnName)); //记录上一个主键值。 } action.Data.LoadFrom(data, RowOp.IgnoreNull, false); //还原数据。 if (action.Data.GetState() == 2 && acceptType != 1) //排除掉仅插入选项 { ExcelResult eResult = excelConfigExtend.BeforeUpdate(action.Data, row); if (eResult == ExcelResult.Ignore || (eResult == ExcelResult.Default && action.Update(where))) { continue;//已经存在了,更新,准备下一条。 } else { result = false; dt.DynamicData = new Exception("[" + LangConst.The + (i + 1) + LangConst.Row + "]:" + action.DebugInfo); goto err; } } else { continue;//已经存在了,同时没有可更新字段 } } else if (action.RecordsAffected == -2)//产生错误信息,发生异常 { result = false; dt.DynamicData = new Exception("[" + LangConst.The + (i + 1) + LangConst.Row + "]:" + action.DebugInfo); goto err; } } #endregion if (action.Data.GetState() == 0 || acceptType == 2) //仅更新则跳过插入 { continue; //没有可映射插入的列。 } //插入前,调用函数(插入特殊主键等值) string errMsg; ExcelResult excelResult = excelConfigExtend.BeforeInsert(action.Data, row, out errMsg); if (excelResult == ExcelResult.Ignore) { continue; } if (excelResult == ExcelResult.Error || !action.Insert(InsertOp.ID)) { result = false; action.RollBack(); if (string.IsNullOrEmpty(errMsg)) { errMsg = "[" + LangConst.The + (i + 1) + LangConst.Row + "]:" + action.DebugInfo; } dt.DynamicData = new Exception(errMsg); excelConfigExtend.OnInsertError(errMsg, dt); goto err; } //插入后事件(可以触发其它事件) excelConfigExtend.AfterInsert(action.Data, row, i == dt.Rows.Count - 1); string primaryKey = action.Get <string>(action.Data.PrimaryCell.ColumnName); rowPrimaryValue.Add(table + i, primaryKey);//记录上一个主键值。 if (!wherePrimaryValue.ContainsKey(table + where)) { wherePrimaryValue.Add(table + where, primaryKey); } } } err: action.EndTransation(); excelConfigExtend.Dispose(); } return(result); }