/*
* Purpose:
* Updates a record from the staff table
*
* Parameters:
* staffID to select a specific record
*
* Return:
* No return
*
* Exceptions:
* Logs any exception thrown within the stored procedure and rethrows
*/
public void update(StaffModel staffModel)
{
try
{
DataStoreConnectionHelper dataStoreHelper = new DataStoreConnectionHelper();
//Create connection to database
SqlConnection connection = dataStoreHelper.createConnection();
//Set up the stored procedure and the parameters
SqlCommand commandCreate = new SqlCommand("UpdateStaffByID");
commandCreate.CommandType = System.Data.CommandType.StoredProcedure;
commandCreate.Parameters.Add("@StaffID", SqlDbType.Int).Value = staffModel.id;
commandCreate.Parameters.Add("@Name", SqlDbType.VarChar).Value = staffModel.name;
//Which connection to execute the command against
commandCreate.Connection = connection;
//Execute the command
commandCreate.ExecuteNonQuery(); //Used for updating new records
//Close connection to database
dataStoreHelper.closeConnection(connection);
}
catch (Exception ex)
{
//Log the exception and rethrow
Console.WriteLine("Exception thrown update: " + this.GetType().Name + ". <" + ex.Message + ">");
throw ex;
}
}
private StaffModel convertCursorRecordToModel(SqlDataReader dataReader)
{
StaffModel staffModel = new StaffModel();
staffModel.id = dataReader.GetInt32(0);
staffModel.name = dataReader.GetString(1);
return(staffModel);
}
/*
* Purpose:
* Reads all records from the staff table
*
* Parameters:
* No parameters
*
* Return:
* All information from every record
*
* Exceptions:
* Logs any exception thrown within the stored procedure and rethrows
*/
public List <StaffModel> readAll()
{
List <StaffModel> staffs = new List <StaffModel>();
try
{
DataStoreConnectionHelper dataStoreHelper = new DataStoreConnectionHelper();
//Create connection to database
SqlConnection connection = dataStoreHelper.createConnection();
//Set up the stored procedure and the parameters
SqlCommand commandRead = new SqlCommand("ReadStaff");
commandRead.CommandType = System.Data.CommandType.StoredProcedure;
//Which connection to execute the command against
commandRead.Connection = connection;
//Execute the command
SqlDataReader dataReader = commandRead.ExecuteReader(); //Used for reading records
//Handle return values
while (dataReader.Read()) //Expecting multiple records - Read moves to the next record - Get values from the columns
{
//Create a new staff model for every record in the data reader
StaffModel staffModel = new StaffModel();
//Copy information from the data reader into the new data model
staffModel = convertCursorRecordToModel(dataReader);
//Copy the new model onto the end of the list
staffs.Add(staffModel);
}
//Close connection to database
dataStoreHelper.closeConnection(connection);
}
catch (Exception ex)
{
//Log the exception and rethrow
Console.WriteLine("Exception thrown readAll: " + this.GetType().Name + ". <" + ex.Message + ">");
throw ex;
}
return(staffs);
}
/*
* Purpose:
* Reads a record from the staff table
*
* Parameters:
* staffID allows the user to select a specific record
*
* Return:
* All information from the selected record
*
* Exceptions:
* Logs any exception thrown within the stored procedure and rethrows
*/
public StaffModel read(int staffID)
{
StaffModel staffModel = new StaffModel();
try
{
DataStoreConnectionHelper dataStoreHelper = new DataStoreConnectionHelper();
//Create connection to database
SqlConnection connection = dataStoreHelper.createConnection();
//Set up the stored procedure and the parameters
SqlCommand commandRead = new SqlCommand("ReadStaffByID");
commandRead.CommandType = System.Data.CommandType.StoredProcedure;
commandRead.Parameters.Add("@StaffID", SqlDbType.Int).Value = staffID;
//Which connection to execute the command against
commandRead.Connection = connection;
//Execute the command
SqlDataReader dataReader = commandRead.ExecuteReader(); //Used for reading records
//Handle return values
dataReader.Read(); //Only expecting one record - Read moves to the first record - Get values from the columns
staffModel = convertCursorRecordToModel(dataReader);
//Close connection to database
dataStoreHelper.closeConnection(connection);
}
catch (Exception ex)
{
//Log the exception and rethrow
Console.WriteLine("Exception thrown read: " + this.GetType().Name + ". <" + ex.Message + ">");
throw ex;
}
return(staffModel);
}
/*
* Purpose:
* Creates a new record in the staff table
*
* Parameters:
* StaffModel will be populated, although staffID will have a defualt value of 0
*
* Return:
* staffID of the record created
*
* Exceptions:
* Logs any exception thrown within the stored procedure and rethrows
*/
public int create(StaffModel staffModel)
{
int staffID = 0;
try
{
DataStoreConnectionHelper dataStoreHelper = new DataStoreConnectionHelper();
//Create connection to database
SqlConnection connection = dataStoreHelper.createConnection();
//Set up the stored procedure and the parameters
SqlCommand commandCreate = new SqlCommand("CreateStaff");
commandCreate.CommandType = System.Data.CommandType.StoredProcedure;
commandCreate.Parameters.Add("@StaffID", SqlDbType.Int).Direction = ParameterDirection.Output; //Output parameter that will be returned from this function
commandCreate.Parameters.Add("@Name", SqlDbType.VarChar).Value = staffModel.name;
//Which connection to execute the command against
commandCreate.Connection = connection;
//Execute the command
commandCreate.ExecuteNonQuery(); //Used for creating new records
//Handle return values
staffID = Convert.ToInt32(commandCreate.Parameters["@StaffID"].Value); //Convert the output value from the SP into an int
//Close connection to database
dataStoreHelper.closeConnection(connection);
}
catch (Exception ex)
{
//Log the exception and rethrow
Console.WriteLine("Exception thrown create: " + this.GetType().Name + ". <" + ex.Message + ">");
throw ex;
}
return(staffID);
}