// Function that executes a select statement.
protected MySqlDataReader DoLoad(DatabaseQuery query)
{
if (!Valid)
{
return(null);
}
if (query.Comparator == null)
{
query.Comparator = Identifier;
}
int columnCount = query.Count;
query.Add(Database.Tables.Generic.CREATED_ON_COLUMN_NAME);
query.Add(Database.Tables.Generic.LAST_UPDATED_COLUMN_NAME);
MySqlCommand command = new MySqlCommand(query.Select, Database.Connection);
MySqlDataReader reader = command.ExecuteReader();
if (reader.Read())
{
Loaded = true;
DateTime creationTime = reader.GetDateTime(columnCount++);
DateTime lastUpdateTime = reader.GetDateTime(columnCount);
if (CreatedOn < creationTime)
{
CreatedOn = creationTime;
}
if (LastSaved < lastUpdateTime)
{
LastSaved = lastUpdateTime;
}
}
else
{
Loaded = false;
}
return(reader);
}
// Function that executes an insert/update statement.
protected int DoSave(DatabaseQuery query)
{
bool exists = query.Exists;
if (Valid && exists)
{
// Use the default comparator if there is none existing.
if (query.Comparator == null)
{
query.Comparator = Identifier;
}
Loaded = true;
LastSaved = DateTime.Now;
query.Add(Database.Tables.Generic.LAST_UPDATED_COLUMN_NAME, LastSaved);
MySqlCommand command = new MySqlCommand(query.Update, Database.Connection);
return(command.ExecuteNonQuery());
}
else
{
// Add a new row and get it's ID.
CreatedOn = DateTime.Now;
LastSaved = DateTime.Now;
query.Add(Database.Tables.Generic.CREATED_ON_COLUMN_NAME, CreatedOn);
query.Add(Database.Tables.Generic.LAST_UPDATED_COLUMN_NAME, LastSaved);
MySqlCommand command = new MySqlCommand(query.Insert, Database.Connection);
command.ExecuteNonQuery();
if (!Valid)
{
id = ( int )(command.LastInsertedId);
Loaded = true;
}
return(1);
}
}