|
public static NotEqualNullable ( |
||
| e1 | ||
| e2 | ||
| Результат | ||
private Expression?LiteToString(LiteReferenceExpression lite, Expression typeId)
{
if (lite.CustomToStr != null)
{
return(Visit(lite.CustomToStr));
}
if (lite.Reference is ImplementedByAllExpression)
{
return(null);
}
if (lite.LazyToStr)
{
return(null);
}
if (IsCacheable(typeId))
{
return(null);
}
if (lite.Reference is EntityExpression entityExp)
{
if (entityExp.AvoidExpandOnRetrieving)
{
return(null);
}
return(binder.BindMethodCall(Expression.Call(entityExp, EntityExpression.ToStringMethod)));
}
if (lite.Reference is ImplementedByExpression ibe)
{
if (ibe.Implementations.Any(imp => imp.Value.AvoidExpandOnRetrieving))
{
return(null);
}
return(ibe.Implementations.Values.Select(ee =>
new When(SmartEqualizer.NotEqualNullable(ee.ExternalId, QueryBinder.NullId(ee.ExternalId.ValueType)),
binder.BindMethodCall(Expression.Call(ee, EntityExpression.ToStringMethod)))
).ToCondition(typeof(string)));
}
return(binder.BindMethodCall(Expression.Call(lite.Reference, EntityExpression.ToStringMethod)));
}
protected internal override Expression VisitMListElement(MListElementExpression mle)
{
Type type = mle.Type;
var bindings = new List <MemberAssignment>
{
Expression.Bind(type.GetProperty("RowId"), Visit(mle.RowId.UnNullify())),
Expression.Bind(type.GetProperty("Parent"), Visit(mle.Parent)),
};
if (mle.Order != null)
{
bindings.Add(Expression.Bind(type.GetProperty("Order"), Visit(mle.Order)));
}
bindings.Add(Expression.Bind(type.GetProperty("Element"), Visit(mle.Element)));
var init = Expression.MemberInit(Expression.New(type), bindings);
return(Expression.Condition(SmartEqualizer.NotEqualNullable(Visit(mle.RowId.Nullify()), NullId),
init,
Expression.Constant(null, init.Type)));
}