internal static object GetId(DbConnection connexio, DbTransaction transaction, string table_name)
{
using (var consulta = connexio.CreateCommand())
{
consulta.Transaction = transaction; // Ara si que la consulta usa la transacció
//
consulta.CommandText =
$@"select last_id from ids where table_name=@table_name for update";
DBUtils.createParameter(consulta, "table_name", table_name, DbType.String);
object o = consulta.ExecuteScalar();
int last_id = (int)((decimal)o);
last_id++;
consulta.CommandText = $@"update ids set last_id=@last_id where table_name=@table_name ";
//DBUtils.createParameter(consulta, "table_name", table_name, DbType.String);
DBUtils.createParameter(consulta, "last_id", last_id, DbType.Int32);
int filesActualitzades = consulta.ExecuteNonQuery();
if (filesActualitzades != 1)
{
throw new Exception("Error actualitzant IDS");
}
return(last_id);
}
}
public static ObservableCollection <Emp> getLlistaEmpleats(
string cognom, DateTime dataLimit, int numDept)
{
try
{
using (EmpresaDBContext context = new EmpresaDBContext())
{
using (var connexio = context.Database.GetDbConnection())
{
connexio.Open();
using (var consulta = connexio.CreateCommand())
{
/*
* consulta.CommandText =
* $@" select e.* , cap.cognom as cognom_cap
* from emp e left join emp cap on e.cap = cap.emp_no
* where e.cognom like '%{cognom}%' and
* e.data_alta >= '{dataLimit.ToString("yyyy-MM-dd")}'
* and ( {numDept}=-1 OR e.dept_no={numDept} )
* ";
*
*/
consulta.CommandText =
$@" select e.* , cap.cognom as cognom_cap
from emp e left join emp cap on e.cap = cap.emp_no
where e.cognom like @cognom and
e.data_alta >= @dataLimit
and ( @numDept=-1 OR e.dept_no=@numDept )
";
DBUtils.createParameter(consulta, "cognom", $"%{cognom}%", DbType.String);
DBUtils.createParameter(consulta, "dataLimit", dataLimit, DbType.DateTime);
DBUtils.createParameter(consulta, "numDept", numDept, DbType.Int32);
/*DbParameter paramCognom = consulta.CreateParameter();
* paramCognom.ParameterName = "cognom";
* paramCognom.Value = $"%{cognom}%";
* paramCognom.DbType = System.Data.DbType.String;
* consulta.Parameters.Add(paramCognom);*/
var reader = consulta.ExecuteReader();
ObservableCollection <Emp> empleats = new ObservableCollection <Emp>();
while (reader.Read())
{
Emp e = new Emp();
DBUtils.Llegeix(reader, out e.empNo, "EMP_NO");
DBUtils.Llegeix(reader, out e.cognom, "COGNOM");
DBUtils.Llegeix(reader, out e.ofici, "OFICI", "");
DBUtils.Llegeix(reader, out e.cap, "CAP", SENSE_DEPT);
DBUtils.Llegeix(reader, out e.nomCap, "cognom_cap", "");
DBUtils.Llegeix(reader, out e.data_alta, "DATA_ALTA", DateTime.Today);
DBUtils.Llegeix(reader, out e.salari, "SALARI", 0);
DBUtils.Llegeix(reader, out e.comissio, "COMISSIO", 0);
DBUtils.Llegeix(reader, out e.deptNo, "DEPT_NO");
/*e.EmpNo = reader.GetInt32(reader.GetOrdinal("EMP_NO"));
* e.Cognom = reader.GetString(reader.GetOrdinal("COGNOM"));
* e.Ofici = reader.IsDBNull(reader.GetOrdinal("OFICI")) ? "" : reader.GetString(reader.GetOrdinal("OFICI"));
* e.Cap = reader.GetInt32(reader.GetOrdinal("CAP"));
* e.Data_alta = reader.GetDateTime(reader.GetOrdinal("DATA_ALTA"));
* e.Salari = reader.GetDecimal(reader.GetOrdinal("SALARI"));
* e.Comissio = reader.GetDecimal(reader.GetOrdinal("COMISSIO"));
* e.DeptNo = reader.GetInt32(reader.GetOrdinal("DEPT_NO"));*/
empleats.Add(e);
}
return(empleats);
}
}
}
}
catch (Exception ex)
{
ILogger log = LogManagerFactory.DefaultLogManager.GetLogger <EmpDB>();
log.Fatal("error durant la select dels empleats");
return(new ObservableCollection <Emp>());
}
}
public static bool Update(
int empNo,
string cognom,
int salari,
int deptNo,
out EmpDB_Update_Error_Codes errorCode)
{
errorCode = EmpDB_Update_Error_Codes.ERR_INESPERAT;
try
{
using (EmpresaDBContext context = new EmpresaDBContext())
{
using (var connexio = context.Database.GetDbConnection())
{
connexio.Open();
using (var consulta = connexio.CreateCommand())
{
// Creem transacció
DbTransaction transaction = connexio.BeginTransaction();
consulta.Transaction = transaction; // Ara si que la consulta usa la transacció
//
consulta.CommandText =
$@"select count(1) from emp where cognom=@cognom";
DBUtils.createParameter(consulta, "cognom", cognom, DbType.String);
object o = consulta.ExecuteScalar();
int numEmpleats = (int)((long)o);
if (numEmpleats > 0)
{
// El cognom ja existeix, i al avisar a l'usuari.
errorCode = EmpDB_Update_Error_Codes.ERR_COGNOM_REPETIT;
return(false);
}
else
{
//string cognom, int salari, int deptNo
consulta.CommandText =
$@"update emp set cognom = @cognom, salari = @salari , dept_no = @deptNo
where emp_no = @empNo";
DBUtils.createParameter(consulta, "cognom", cognom, DbType.String);
DBUtils.createParameter(consulta, "salari", salari, DbType.Int32);
DBUtils.createParameter(consulta, "deptNo", deptNo, DbType.Int32);
DBUtils.createParameter(consulta, "empNo", empNo, DbType.Int32);
int filesModificades = consulta.ExecuteNonQuery();
if (filesModificades == 1)
{
transaction.Commit();
return(true);
}
else
{
// OMG!
// rollback !!!!!!!!
transaction.Rollback();
ILogger log = LogManagerFactory.DefaultLogManager.GetLogger <EmpDB>();
log.Fatal("error durant la inserció de l'empleat , filesModificades=" + filesModificades);
//-----------------------------------------------------
// El log es troba a la carpeta següent
// (el número llarg en hexadecimal és el Package name
// que està a l'arxiu "Package.appmanifest"
// en aquest cas és 727b014c-873f-493e-b051-4dd21cf18dae_n82rqfc3nm07y
//C:\Users\Usuari\AppData\Local\Packages\727b014c-873f-493e-b051-4dd21cf18dae_n82rqfc3nm07y\LocalState\MetroLogs
//-----------------------------------------------------
return(false);
}
}
}
}
}
} catch (Exception ex)
{
errorCode = EmpDB_Update_Error_Codes.ERR_INESPERAT;
ILogger log = LogManagerFactory.DefaultLogManager.GetLogger <EmpDB>();
log.Error("Error inesperat a l'actualització de dades", ex);
return(false);
}
}