public DataTable ExecuteUserQuery(int QuestionId, string Query, User User)
{
ValidateUserQuery(Query);
using (SqlConnection conn = new SqlConnection(Properties.Settings.Default.DatabaseDataSourcesConnectionString))
{
try
{
conn.Open();
var exerciseService = IocContainer.Container.GetInstance <IExerciseService>();
MultipleChoiceExercise exercise = (MultipleChoiceExercise)exerciseService.GetByQuestion(QuestionId, User);
var question = exercise.Questions.Single(x => x.ExerciseQuestionId == QuestionId);
// Start a transaction first
_sourceDA.BeginUserTransaction(conn);
IQueryBuilder queryBuilder = QueryBuilderFactory.CreateQueryBuilder(SourceDatabaseType.TSQL);
// Do any commands that the user has already ran on this data source (Execute Query type only, not submitted answers)
if (User.UserId != -1)
{
List <UserActionModel> queries = _da.ListQuestionQueries(question.ExerciseQuestionId, User.UserId);
foreach (UserActionModel query in queries)
{
try
{
String userQuery = queryBuilder.BuildQuery(query.Description, exercise, question);
_sourceDA.ExecuteUserQuery(userQuery, conn);
}
catch (Exception)
{
}
}
}
// Do the commands
String builtQuery = queryBuilder.BuildQuery(Query, exercise, question);
DataTable results = _sourceDA.GetDataTable(builtQuery, conn, 100);
return(results);
}
catch (Exception)
{
throw;
}
finally
{
// Roll back the transaction
_sourceDA.RollBackUserTransaction(conn);
}
}
}
public void GetDifferences_should_not_be_slow_on_large_datasets()
{
ISourceDataAccess da = SourceDataAccessFactory.CreateDataAccess(SourceDatabaseType.TSQL);
DataTable dt1 = da.GetDataTable("select * FROM SRC_EMARKETING_EMAIL ORDER BY EmailId ASC");
DataTable dt2 = da.GetDataTable("select * FROM SRC_EMARKETING_EMAIL ORDER BY EmailId DESC");
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
var results = new DifferenceEngine().GetDifferences(dt1, dt2);
stopwatch.Stop();
Assert.IsTrue(stopwatch.ElapsedMilliseconds < 200);
}
public void GetDifferences_should_not_be_slow()
{
ISourceDataAccess da = SourceDataAccessFactory.CreateDataAccess(SourceDatabaseType.TSQL);
DataTable dt1 = da.GetDataTable("select exq.exq_description, count(exqa.exqa_id) 'times_answered' from src_exercises_questions exq left join src_exercises_questions_answered exqa on exq.exq_id = exqa.exq_id group by exq.exq_id, exq.exq_description");
DataTable dt2 = da.GetDataTable("select exq.exq_description, count(*) 'times_answered' from src_exercises_questions exq left join src_exercises_questions_answered exqa on exq.exq_id = exqa.exq_id group by exq.exq_id, exq.exq_description");
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
var results = new DifferenceEngine().GetDifferences(dt1, dt2);
stopwatch.Stop();
Assert.IsTrue(stopwatch.ElapsedMilliseconds < 200);
}
