private SaleDetails DetailsRow(IVehicleVendorRepository repo, OleDbDataReader reader, Sale sale)
{
var detailQty = reader["Quantity"];
if (detailQty != DBNull.Value)
{
var detailQtyInt = (int)(double)detailQty;
var vehiceId = (int)(double)reader["VehicleId"];
var details = new SaleDetails() { Quantity = (int)(double)detailQtyInt, VehicleId = vehiceId, Sale = sale };
return details;
}
return null;
}
public void LoadRepository()
{
//1. recursive delete \extracted [catching NonExisting exception]
string extractPath = @"..\..\extracted";
if (Directory.Exists(extractPath))
{
Directory.Delete(extractPath, true);
}
//2. create \extracted
Directory.CreateDirectory(extractPath);
//3. extract from sales_reports.zip into extracted
string zipPath = @"..\..\sales_reports.zip";
using (var zip1 = ZipFile.Read(zipPath))
{
foreach (var entry in zip1)
{
entry.Extract(extractPath, ExtractExistingFileAction.OverwriteSilently);
}
}
//4. get \extracted directories
var subfolders = Directory.GetDirectories(extractPath);
//5. foreach the directories
foreach (var dateFolderPath in subfolders)
{
string dateFolder = dateFolderPath.Split('\\').Last();
// parsing the date (parse fail = skip)
DateTime saleDate;
if (!DateTime.TryParse(dateFolder, out saleDate))
{
continue;
}
// get filenames
var saleReportsByDealer = Directory.GetFiles(dateFolderPath);
// foreach the filenames
foreach (var reportPath in saleReportsByDealer)
{
// check if .xls extension (fail = skip)
var fileInfo = new FileInfo(reportPath);
string extension = fileInfo.Extension;
if (extension != ".xls")
{
continue;
}
// parse int for DealerId (fail = skip)
string filename = fileInfo.Name.Split('.').First();
int dealerId;
if (!int.TryParse(filename, out dealerId))
{
continue;
}
// connect via OleDb + pull the rows + close connection
string connectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + reportPath + ";"
+ "Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=1\";";
OleDbConnection db_Con = new OleDbConnection(connectionString);
#region Connection
db_Con.Open();
using (db_Con)
{
// this code is for discovering sheet names if they are not available
DataTable tables = db_Con.GetSchema("Tables");
var sheetNameList = new List<string>();
for (int i = 0; i < tables.Rows.Count; i++)
{
var name = tables.Rows[i][2].ToString();
sheetNameList.Add(name);
}
foreach (var sheetName in sheetNameList)
{
Sale sale = new Sale() { DealerId = dealerId, SaleDate = saleDate };
this.repo.Add<Sale>(sale);
string sqlString = "select * from [" + sheetName + "];";
OleDbCommand cmdGetRows = new OleDbCommand(sqlString, db_Con);
//cmdGetRows.Parameters.AddWithValue("@sheetName", sheetName);
OleDbDataReader reader = cmdGetRows.ExecuteReader();
using (reader)
{
SaleDetails details;
while (reader.Read())
{
details = this.DetailsRow(this.repo, reader, sale);
if (details != null)
{
this.repo.Add<SaleDetails>(details);
}
}
}
}
}//using db_Con
#endregion
}
}
}
/// <summary>
/// Reads MS Excel (.xls) file through the OLE DB data provider.
/// CAUTION: This method does not call SaveChanges() to the repo.
/// </summary>
public void LoadRepository()
{
string fileLocation = @"..\..\datafile.xls";
FileInfo dataFile = new FileInfo(fileLocation);
string zipPath = @"..\..\zipfile.zip";
string extractPath = @"..\..\";
if (!dataFile.Exists)
{
ZipFile.ExtractToDirectory(zipPath, extractPath);
}
string connectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + fileLocation + ";"
+ "Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=1\";";
OleDbConnection db_Con = new OleDbConnection(connectionString);
db_Con.Open();
using (db_Con)
{
// this code is for discovering sheet names if they are not available
DataTable tables = db_Con.GetSchema("Tables");
var sheetNameList = new List<string>();
for (int i = 0; i < tables.Rows.Count; i++)
{
var name = tables.Rows[i][2].ToString();
sheetNameList.Add(name);
}
foreach (var sheetName in sheetNameList)
{
string sqlString = "select * from [" + sheetName + "];";
OleDbCommand cmdGetRows = new OleDbCommand(sqlString, db_Con);
OleDbDataReader reader = cmdGetRows.ExecuteReader();
using (reader)
{
reader.Read();
Sale sale;
SaleDetails details;
var dealer = reader["DealerId"];
if (dealer != DBNull.Value)
{
var dealerInt = (int)(double)dealer;
var saleDate = (DateTime)reader["SaleDate"];
sale = new Sale() { DealerId = dealerInt, SaleDate = saleDate };
this.repo.Add<Sale>(sale);
details = this.DetailsRow(this.repo, reader, sale);
if (details != null)
{
this.repo.Add<SaleDetails>(details);
}
while (reader.Read())
{
details = this.DetailsRow(this.repo, reader, sale);
if (details != null)
{
this.repo.Add<SaleDetails>(details);
}
}
}
}
}
}//using db_Con
}
