internal static IProjection ProcessMod(MethodCallExpression methodCallExpression)
{
IProjection property = ExpressionProcessor.FindMemberProjection(methodCallExpression.Arguments[0]).AsProjection();
object divisor = ExpressionProcessor.FindValue(methodCallExpression.Arguments[1]);
return(Projections.SqlFunction("mod", NHibernateUtil.Int32, property, Projections.Constant(divisor)));
}
internal static IProjection ProcessCoalesce(MethodCallExpression methodCallExpression)
{
IProjection property = ExpressionProcessor.FindMemberProjection(methodCallExpression.Arguments[0]).AsProjection();
object replaceValueIfIsNull = ExpressionProcessor.FindValue(methodCallExpression.Arguments[1]);
return(Projections.SqlFunction("coalesce", NHibernateUtil.Object, property, Projections.Constant(replaceValueIfIsNull)));
}
internal static IProjection ProcessCharIndex(MethodCallExpression methodCallExpression)
{
IProjection property = ExpressionProcessor.FindMemberProjection(methodCallExpression.Arguments[0]).AsProjection();
object theChar = ExpressionProcessor.FindValue(methodCallExpression.Arguments[1]);
object startLocation = ExpressionProcessor.FindValue(methodCallExpression.Arguments[2]);
return(Projections.SqlFunction("locate", NHibernateUtil.String, Projections.Constant(theChar), property, Projections.Constant(startLocation)));
}
internal static IProjection ProcessSubstr(MethodCallExpression methodCallExpression)
{
IProjection property = ExpressionProcessor.FindMemberProjection(methodCallExpression.Arguments[0]).AsProjection();
object startIndex = ExpressionProcessor.FindValue(methodCallExpression.Arguments[1]);
object length = ExpressionProcessor.FindValue(methodCallExpression.Arguments[2]);
return(Projections.SqlFunction("substring", NHibernateUtil.String, property, Projections.Constant(startIndex), Projections.Constant(length)));
}
internal static IProjection ProcessSubstr(MethodCallExpression methodCallExpression)
{
IProjection property = ExpressionProcessor.FindMemberProjection(methodCallExpression.Arguments[0]).AsProjection();
var startIndex = ExpressionProcessor.FindMemberProjection(methodCallExpression.Arguments[1]);
var length = ExpressionProcessor.FindMemberProjection(methodCallExpression.Arguments[2]);
return(Projections.SqlFunction("substring", NHibernateUtil.String, property, startIndex.AsProjection(), length.AsProjection()));
}
internal static IProjection ProcessConcat(MethodCallExpression methodCallExpression)
{
NewArrayExpression args = (NewArrayExpression)methodCallExpression.Arguments[0];
IProjection[] projections = new IProjection[args.Expressions.Count];
for (var i = 0; i < args.Expressions.Count; i++)
{
projections[i] = ExpressionProcessor.FindMemberProjection(args.Expressions[i]).AsProjection();
}
return(Projections.SqlFunction("concat", NHibernateUtil.String, projections));
}
internal static IProjection ProcessRound(MethodCallExpression methodCallExpression)
{
IProjection innerProjection =
ExpressionProcessor.FindMemberProjection(methodCallExpression.Arguments[0]).AsProjection();
IProjection digitsProjection = Projections.Constant(0);
if (methodCallExpression.Arguments.Count > 1)
{
digitsProjection = ExpressionProcessor.FindMemberProjection(methodCallExpression.Arguments[1]).AsProjection();
}
return(Projections.SqlFunction("round", NHibernateUtil.Double, innerProjection, digitsProjection));
}
public string GetSelectedTaskParticipants(int taskId)
{
using (var session = Hibernate.SessionFactory.OpenSession())
{
Task t = null;
User u = null;
var participants = session.QueryOver(() => t)
.JoinAlias(() => t.Users, () => u)
.Where(() => t.Id == taskId)
.SelectList(l => l
.Select(Pro.SqlFunction("CONCAT", SqlType.String,
Pro.SqlFunction("SUBSTRING", SqlType.String,
Pro.SqlFunction("UPPER", SqlType.String, Pro.Property("u.Name")), Pro.Constant(1), Pro.Constant(1))
,
Pro.SqlFunction("SUBSTRING", SqlType.String,
Pro.SqlFunction("UPPER", SqlType.String, Pro.Property("u.Surname")), Pro.Constant(1), Pro.Constant(1))
)))
.List <string>();
return(string.Join(", ", participants.OrderBy(s => s)));
}
}
private static IProjection SqlFunction(string name, IType type, System.Linq.Expressions.Expression projection)
{
IProjection property = ExpressionProcessor.FindMemberProjection(projection).AsProjection();
return(Projections.SqlFunction(name, type, property));
}
internal static IProjection ProcessDay(System.Linq.Expressions.Expression expression)
{
IProjection property = ExpressionProcessor.FindMemberProjection(expression).AsProjection();
return(Projections.SqlFunction("day", NHibernateUtil.Int32, property));
}
internal static IProjection ProcessBitLength(MethodCallExpression methodCallExpression)
{
IProjection property = ExpressionProcessor.FindMemberProjection(methodCallExpression.Arguments[0]).AsProjection();
return(Projections.SqlFunction("bit_length", NHibernateUtil.String, property));
}
internal static IProjection ProcessDoubleAbs(MethodCallExpression methodCallExpression)
{
IProjection property = ExpressionProcessor.FindMemberProjection(methodCallExpression.Arguments[0]).AsProjection();
return(Projections.SqlFunction("abs", NHibernateUtil.Double, property));
}
internal static IProjection ProcessMinutePart(MethodCallExpression methodCallExpression)
{
IProjection property = ExpressionProcessor.FindMemberProjection(methodCallExpression.Arguments[0]).AsProjection();
return(Projections.SqlFunction("minute", NHibernateUtil.Int32, property));
}