@@ -1487,6 +1487,26 @@ protected override MemberAssignment VisitMemberAssignment(MemberAssignment assig
1487 1487
return assignment;
1488 1488
}
1489 1489 1490 +
protected override Expression VisitConditional(ConditionalExpression c) // a.IsNew
1491 +
{
1492 +
Expression test = this.Visit(c.Test);
1493 +
if (test is ConstantExpression co)
1494 +
{
1495 +
if ((bool)co.Value!)
1496 +
return this.Visit(c.IfTrue);
1497 +
else
1498 +
return this.Visit(c.IfFalse);
1499 +
}
1500 + 1501 +
Expression ifTrue = this.Visit(c.IfTrue);
1502 +
Expression ifFalse = this.Visit(c.IfFalse);
1503 +
if (test != c.Test || ifTrue != c.IfTrue || ifFalse != c.IfFalse)
1504 +
{
1505 +
return Expression.Condition(test, ifTrue, ifFalse);
1506 +
}
1507 +
return c;
1508 +
}
1509 + 1490 1510
protected override Expression VisitMember(MemberExpression m)
1491 1511
{
1492 1512
Expression ex = base.VisitMember(m);
@@ -1539,6 +1559,7 @@ public Expression BindMethodCall(MethodCallExpression m)
1539 1559
return result;
1540 1560
}
1541 1561 1562 + 1542 1563
if (source is ImplementedByExpression ib)
1543 1564
{
1544 1565
if (m.Method.IsExtensionMethod())
@@ -1625,9 +1646,39 @@ public Expression BindMethodCall(MethodCallExpression m)
1625 1646
return tablePeriod;
1626 1647
}
1627 1648 1649 +
Expression PartialEval(Expression ee)
1650 +
{
1651 +
if (m.Method.IsExtensionMethod())
1652 +
{
1653 +
return ExpressionEvaluator.PartialEval(Expression.Call(null, m.Method, m.Arguments.Skip(1).PreAnd(ee)));
1654 +
}
1655 +
else
1656 +
{
1657 +
return ExpressionEvaluator.PartialEval(Expression.Call(ee, m.Method, m.Arguments));
1658 +
}
1659 +
}
1660 + 1661 +
if (source is TypeEntityExpression type)
1662 +
{
1663 +
return Condition(Expression.NotEqual(type.ExternalId, NullId(type.ExternalId.ValueType)),
1664 +
ifTrue: PartialEval(Expression.Constant(type.TypeValue)),
1665 +
ifFalse: Expression.Constant(null, m.Type));
1666 +
}
1667 + 1668 +
if(source is TypeImplementedByExpression typeIB)
1669 +
{
1670 +
return typeIB.TypeImplementations.Aggregate(
1671 +
(Expression)Expression.Constant(null, m.Type),
1672 +
(acum, kvp) => Condition(Expression.NotEqual(kvp.Value, NullId(kvp.Value.Value.Type)),
1673 +
ifTrue: PartialEval(Expression.Constant(kvp.Key)),
1674 +
ifFalse: acum));
1675 +
}
1676 + 1628 1677
return m;
1629 1678
}
1630 1679 1680 + 1681 + 1631 1682 1632 1683
private ConditionalExpression DispatchConditional(MethodCallExpression m, Expression test, Expression ifTrue, Expression ifFalse)
1633 1684
{
@@ -1748,6 +1799,9 @@ public Expression BindMemberAccess(MemberExpression m)
1748 1799
if (pi != null && ReflectionTools.PropertyEquals(pi, EntityExpression.IdOrNullProperty))
1749 1800
return ee.ExternalId;
1750 1801 1802 +
if (m.Member.Name == nameof(Entity.IsNew))
1803 +
return Expression.Constant(false);
1804 + 1751 1805
FieldInfo? fi = m.Member as FieldInfo ?? Reflector.TryFindFieldInfo(ee.Type, pi!);
1752 1806 1753 1807
if (fi == null)
@@ -1862,6 +1916,25 @@ public Expression BindMemberAccess(MemberExpression m)
1862 1916
_ => throw new InvalidOperationException("The member {0} of MListElement is not accesible on queries".FormatWith(m.Member)),
1863 1917
};
1864 1918
}
1919 +
case DbExpressionType.TypeEntity:
1920 +
{
1921 +
TypeEntityExpression type = (TypeEntityExpression)source;
1922 + 1923 +
return Condition(Expression.NotEqual(type.ExternalId, NullId(type.ExternalId.ValueType)),
1924 +
ifTrue: ExpressionEvaluator.PartialEval(Expression.MakeMemberAccess(Expression.Constant(type.TypeValue), m.Member)),
1925 +
ifFalse: Expression.Constant(null, m.Type));
1926 +
}
1927 + 1928 +
case DbExpressionType.TypeImplementedBy:
1929 +
{
1930 +
TypeImplementedByExpression typeIB = (TypeImplementedByExpression)source;
1931 + 1932 +
return typeIB.TypeImplementations.Aggregate(
1933 +
(Expression)Expression.Constant(null, m.Type),
1934 +
(acum, kvp) => Condition(Expression.NotEqual(kvp.Value, NullId(kvp.Value.Value.Type)),
1935 +
ifTrue: ExpressionEvaluator.PartialEval(Expression.MakeMemberAccess(Expression.Constant(kvp.Key), m.Member)),
1936 +
ifFalse: acum));
1937 +
}
1865 1938
}
1866 1939
}
1867 1940
break;
@@ -3477,6 +3550,7 @@ protected override Expression VisitConditional(ConditionalExpression c)
3477 3550
var ifTrue = Visit(c.IfTrue);
3478 3551
var ifFalse = Visit(c.IfFalse);
3479 3552 3553 + 3480 3554
if (colExpression is LiteReferenceExpression)
3481 3555
{
3482 3556
return Combiner<LiteReferenceExpression>(ifTrue, ifFalse, (col, l, r) =>
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