public async Task CanMinProjectionOnIdentityProjectionAsync()
{
using (ISession s = OpenSession())
{
ISQLFunction arithmaticAddition = new VarArgsSQLFunction("(", "+", ")");
ICriteria c =
s.CreateCriteria(typeof(Person)).SetProjection(
Projections.Min(Projections.SqlFunction(arithmaticAddition, NHibernateUtil.GuessType(typeof(double)),
Projections.Property("IQ"), Projections.Property("ShoeSize"))));
IList list = await(c.ListAsync());
Assert.AreEqual(19, list[0]);
}
}
public void CanAvgProjectionOnSqlFunction()
{
using (ISession s = OpenSession())
{
ISQLFunction arithmaticAddition = new VarArgsSQLFunction("(", "+", ")");
ICriteria c =
s.CreateCriteria(typeof(Person)).SetProjection(
Projections.Avg(Projections.SqlFunction(arithmaticAddition, NHibernateUtil.GuessType(typeof(double)),
Projections.Property("IQ"), Projections.Property("ShoeSize"))));
IList list = c.List();
Assert.AreEqual(((double)334) / 5, list[0]);
}
}
public async Task OrderProjectionTestAsync()
{
ISQLFunction arithmaticMultiplication = new VarArgsSQLFunction("(", "*", ")");
using (ISession session = this.OpenSession()) {
ICriteria criteria = session.CreateCriteria(typeof(Person), "c");
criteria.AddOrder(Order.Asc(
Projections.SqlFunction(arithmaticMultiplication, NHibernateUtil.GuessType(typeof(int)),
Projections.Property("IQ"), Projections.Constant(-1))));
IList <Person> results = await(criteria.ListAsync <Person>());
Assert.AreEqual(5, results.Count);
Assert.AreEqual("Sally", results[0].Name);
Assert.AreEqual("Joe", results[4].Name);
}
}
public void CanOrderBySqlProjectionDesc()
{
using (ISession s = OpenSession())
{
ISQLFunction arithmaticAddition = new VarArgsSQLFunction("(", "+", ")");
ICriteria c =
s.CreateCriteria(typeof(Person)).AddOrder(
Order.Desc(Projections.SqlFunction(arithmaticAddition, NHibernateUtil.GuessType(typeof(double)),
Projections.Property("IQ"), Projections.Property("ShoeSize"))));
IList <Person> list = c.List <Person>();
for (int i = 0; i < list.Count - 1; i++)
{
Assert.IsTrue(list[i].IQ + list[i].ShoeSize >= list[i + 1].IQ + list[i + 1].ShoeSize);
}
}
}
public void VarArgsFunction()
{
IList args = new ArrayList();
VarArgsSQLFunction vf = new VarArgsSQLFunction("(", " || ", ")");
Assert.AreEqual("()", vf.Render(args, factoryImpl).ToString());
args.Add("va1");
Assert.AreEqual("(va1)", vf.Render(args, factoryImpl).ToString());
args.Clear();
args.Add("va1");
args.Add("va2");
args.Add("va3");
Assert.AreEqual("(va1 || va2 || va3)", vf.Render(args, factoryImpl).ToString());
}
public static IProjection ProcessOperator(MethodCallExpression methodCallExpression, string op)
{
var expressions = new List <Expression>();
if (methodCallExpression.Object != null)
{
expressions.Add(methodCallExpression.Object);
}
foreach (var argumentExpression in methodCallExpression.Arguments)
{
expressions.Add(argumentExpression);
}
var sqlFunction = new VarArgsSQLFunction("(", op, ")");
var returnType = TypeUtil.GuessType(expressions[0].Type);
var projections = expressions.Select(e => FindMemberProjection(e)).ToArray();
return(Projections.SqlFunction(sqlFunction, returnType, projections));
}
private static void RegisterBinaryArithmeticExpression(ExpressionType type, string sqlOperand)
{
_binaryArithmethicTemplates[type] = new VarArgsSQLFunction("(", sqlOperand, ")");
}
