//判断是否存在一条表项
static public bool IsAnEntryExist(string merchant_id, string supplier_id, string batch_number, string id_in_batch)
{
//string db = " DATA SOURCE=localhost:1521/orcl2;USER ID=scott; password = 1234";
//OracleConnection dbcon = new OracleConnection(db);
Doselect select = Doselect.instance;
Doexecute execute = Doexecute.instance;
string search = "select merchant_id from merchandise where merchant_id = '" + merchant_id
+ "' and supplier_id = '" + supplier_id
+ "' and batch_number = '" + batch_number
+ "' and id_in_batch = '" + id_in_batch
+ "'";
//OracleDataAdapter oda = new OracleDataAdapter(search, dbcon);
//DataSet ds = new DataSet();
//oda.Fill(ds, "merchandise");
DataSet ds = select.Data(search, "merchandise");
for (int i = 0; i < ds.Tables["merchandise"].Rows.Count; i++)
{
if (merchant_id == (string)ds.Tables["merchandise"].Rows[i]["merchant_id"])
{
return(true);
}
}
return(false);
}
//通过货物名称查询
static public DataSet SearchByName(string merchant_id, string name)
{
//string db = " DATA SOURCE=localhost:1521/orcl2;USER ID=scott; password = 1234";
//OracleConnection dbcon = new OracleConnection(db);
Doselect select = Doselect.instance;
Doexecute execute = Doexecute.instance;
string search = "select * from merchandise where merchant_id = '" + merchant_id + "' and name = '" + name + "'";
//OracleDataAdapter oda = new OracleDataAdapter(search, dbcon);
DataSet ds = new DataSet();
//oda.Fill(ds, "merchandise");
ds = select.Data(search, "merchandise");
return(ds);
}
//查看商家所有货物数量信息
static public DataSet ShowAllMerchandiseNumber(string merchant_id)
{
//string db = " DATA SOURCE=localhost:1521/orcl2;USER ID=scott; password = 1234";
//OracleConnection dbcon = new OracleConnection(db);
Doselect select = Doselect.instance;
Doexecute execute = Doexecute.instance;
string search = "select name, sum(amount) as sum_amount from merchandise where merchant_id = '" + merchant_id + "' group by name";
//OracleDataAdapter oda = new OracleDataAdapter(search, dbcon);
DataSet ds = new DataSet();
//oda.Fill(ds, "merchandise");
ds = select.Data(search, "merchandise");
return(ds);
}
//判断某仓库是否有足够的空间
static public double IsWarehouseCapacityEnough(string warehouse_id, double amount)
{
//string db = " DATA SOURCE=localhost:1521/orcl2;USER ID=scott; password = 1234";
//OracleConnection dbcon = new OracleConnection(db);
Doselect select = Doselect.instance;
Doexecute execute = Doexecute.instance;
string search = "select left_capacity from warehouse where warehouse_id = '" + warehouse_id + "'";
//OracleDataAdapter oda = new OracleDataAdapter(search, dbcon);
DataSet ds = new DataSet();
//oda.Fill(ds, "warehouse");
ds = select.Data(search, "warehouse");
return(Convert.ToDouble(ds.Tables["warehouse"].Rows[0]["left_capacity"]) - amount);
}
static public DataSet selectReceipt(string supplier_id)
{
try
{
Doselect select = Doselect.instance;
Doexecute execute = Doexecute.instance;
string sql = "select * from receipt where supplier_id = '" + supplier_id + "' and merchant_id = '" + user_ifms.ID + "'";
return(select.Data(sql, "receipt"));
}
catch
{
MessageBox.Show("查询失败。");
return(null);
}
}
//判断要取出的货物是否充足
static public double IsMerchandiseEnough(string merchant_id, string supplier_id, string batch_number, string id_in_batch /*, string name*/, double amount_to_pick /*, string warehouse_id*/)
{
//string db = " DATA SOURCE=localhost:1521/orcl2;USER ID=scott; password = 1234";
//OracleConnection dbcon = new OracleConnection(db);
Doselect select = Doselect.instance;
Doexecute execute = Doexecute.instance;
string search = "select amount from merchandise where merchant_id = '" + merchant_id
+ "' and supplier_id = '" + supplier_id
+ "' and batch_number = '" + batch_number
+ "' and id_in_batch = '" + id_in_batch
+ "'";
//OracleDataAdapter oda = new OracleDataAdapter(search, dbcon);
DataSet ds = new DataSet();
//oda.Fill(ds, "merchandise");
ds = select.Data(search, "merchandise");
return(Convert.ToDouble(ds.Tables["merchandise"].Rows[0]["amount"]) - amount_to_pick);
}
public bool update(string ID, string newpassword)
{
string result = "";
string esql = "update STAFF_LOGIN set PASSWORD = '******' where STAFF_ID = '" + ID + "'";
string ssql = "select PASSWORD from STAFF_LOGIN where STAFF_ID = '" + ID + "'";
Doexecute b = Doexecute.instance;
Doselect a = Doselect.instance;
b.Do(esql);
result = a.Do(ssql).ToString();
if (result == newpassword)
{
return(true);
}
return(false);
}
//判断某仓库是否属于某商家
static public bool IsWarehouseBelongToMerchant(string warehouse_id, string merchant_id)
{
//string db = " DATA SOURCE=localhost:1521/orcl2;USER ID=scott; password = 1234";
//OracleConnection dbcon = new OracleConnection(db);
Doselect select = Doselect.instance;
Doexecute execute = Doexecute.instance;
string search = "select warehouse_id from warehouse where merchant_id = '" + merchant_id + "'";
//OracleDataAdapter oda = new OracleDataAdapter(search, dbcon);
DataSet ds = new DataSet();
//oda.Fill(ds, "warehouse");
ds = select.Data(search, "warehouse");
for (int i = 0; i < ds.Tables["warehouse"].Rows.Count; i++)
{
if (warehouse_id == (string)ds.Tables["warehouse"].Rows[i]["warehouse_id"])
{
return(true);
}
}
return(false);
}
public bool update(string ID, string newpassword)
{
string result = "";
string esql = "update MERCHANT_LOGIN set PASSWORD = '******' where MERCHANT_ID = '" + ID + "'";
string ssql = "select PASSWORD from MERCHANT_LOGIN where MERCHANT_ID = '" + ID + "'";
Doexecute b = Doexecute.instance;
//Doexecute b1 = Doexecute.instance;
//if (b == b1) Console.WriteLine("the same again!!");
Doselect a = Doselect.instance;
b.Do(esql);
result = a.Do(ssql).ToString();
if (result == newpassword)
{
return(true);
}
return(false);
}