/*
* Purpose:
* Updates a record from the dog table
*
* Parameters:
* dogID to select a specific record
*
* Return:
* No return
*
* Exceptions:
* Logs any exception thrown within the stored procedure and rethrows
*/
public void update(DogModel dogModel)
{
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("UpdateDogByID");
commandCreate.CommandType = System.Data.CommandType.StoredProcedure;
commandCreate.Parameters.Add("@DogID", SqlDbType.Int).Value = dogModel.id;
commandCreate.Parameters.Add("@ClientID", SqlDbType.Int).Value = dogModel.clientID;
commandCreate.Parameters.Add("@Name", SqlDbType.VarChar).Value = dogModel.name;
commandCreate.Parameters.Add("@Age", SqlDbType.Int).Value = dogModel.age;
commandCreate.Parameters.Add("@Breed", SqlDbType.VarChar).Value = dogModel.breed;
commandCreate.Parameters.Add("@ExperienceOrQualification", SqlDbType.Bit).Value = dogModel.experienceOrQualification;
//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 DogModel convertCursorRecordToModel(SqlDataReader dataReader)
{
DogModel dogModel = new DogModel();
dogModel.id = dataReader.GetInt32(0);
dogModel.clientID = dataReader.GetInt32(1);
dogModel.name = dataReader.GetString(2);
dogModel.age = dataReader.GetInt32(3);
dogModel.breed = dataReader.GetString(4);
dogModel.experienceOrQualification = dataReader.GetBoolean(5);
return(dogModel);
}
/*
* Purpose:
* Reads all records from the dog table
*
* Parameters:
* No parameters
*
* Return:
* All information from every record
*
* Exceptions:
* Logs any exception thrown within the stored procedure and rethrows
*/
public List <DogModel> readAll()
{
List <DogModel> dogs = new List <DogModel>();
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("ReadDogs");
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 dog model for every record in the data reader
DogModel dogModel = new DogModel();
//Copy information from the data reader into the new data model
dogModel = convertCursorRecordToModel(dataReader);
//Copy the new model onto the end of the list
dogs.Add(dogModel);
}
//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(dogs);
}
/*
* Purpose:
* Creates a new record in the dog table
*
* Parameters:
* DogModel will be populated, although dogID will have a defualt value of 0
*
* Return:
* dogID of the record created
*
* Exceptions:
* Logs any exception thrown within the stored procedure and rethrows
*/
public int create(DogModel dogModel)
{
int dogID = 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("CreateDog");
commandCreate.CommandType = System.Data.CommandType.StoredProcedure;
commandCreate.Parameters.Add("@DogID", SqlDbType.Int).Direction = ParameterDirection.Output; //Output parameter that will be returned from this function
commandCreate.Parameters.Add("@ClientID", SqlDbType.Int).Value = dogModel.clientID;
commandCreate.Parameters.Add("@Name", SqlDbType.VarChar).Value = dogModel.name;
commandCreate.Parameters.Add("@Age", SqlDbType.Int).Value = dogModel.age;
commandCreate.Parameters.Add("@Breed", SqlDbType.VarChar).Value = dogModel.breed;
commandCreate.Parameters.Add("@ExperienceOrQualification", SqlDbType.Bit).Value = dogModel.experienceOrQualification;
//Which connection to execute the command against
commandCreate.Connection = connection;
//Execute the command
commandCreate.ExecuteNonQuery(); //Used for creating new records
//Handle return values
dogID = Convert.ToInt32(commandCreate.Parameters["@DogID"].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(dogID);
}
/*
* Purpose:
* Reads a record from the dog table
*
* Parameters:
* dogID 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 DogModel read(int dogID)
{
DogModel dogModel = new DogModel();
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("ReadDogByID");
commandRead.CommandType = System.Data.CommandType.StoredProcedure;
commandRead.Parameters.Add("@DogID", SqlDbType.Int).Value = dogID;
//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
dogModel = 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(dogModel);
}
