static Expression <Func <object, bool> > GetPredicate(List <PropertySetter> predicate, PropertyRoute mainRoute, JsonSerializerOptions options)
{
var param = Expression.Parameter(typeof(object), "p");
var body = predicate.Select(p =>
{
var pr = mainRoute.AddMany(p.Property);
var lambda = pr.GetLambdaExpression <object, object>(true, mainRoute.GetMListItemsRoute());
var left = Expression.Invoke(lambda, param);
object?objClean = ConvertObject(p.Value, pr, options);
return((Expression)QueryUtils.GetCompareExpression(p.FilterOperation !.Value, left, Expression.Constant(objClean), inMemory: true));
}).Aggregate((a, b) => Expression.AndAlso(a, b));
return(Expression.Lambda <Func <object, bool> >(body, param));
}
public static void SetSetters(ModifiableEntity entity, List <PropertySetter> setters, PropertyRoute route)
{
var options = SignumServer.JsonSerializerOptions;
foreach (var setter in setters)
{
var pr = route.AddMany(setter.Property);
SignumServer.WebEntityJsonConverterFactory.AssertCanWrite(pr, entity);
if (pr.Type.IsMList())
{
var elementPr = pr.Add("Item");
var mlist = pr.GetLambdaExpression <ModifiableEntity, IMListPrivate>(false).Compile()(entity);
switch (setter.Operation)
{
case PropertyOperation.AddElement:
{
var value = ConvertObject(setter.Value, elementPr, options);
((IList)mlist).Add(value);
}
break;
case PropertyOperation.AddNewElement:
{
var item = (ModifiableEntity)Activator.CreateInstance(elementPr.Type) !;
SetSetters(item, setter.Setters !, elementPr);
((IList)mlist).Add(item);
}
break;
case PropertyOperation.ChangeElements:
{
var predicate = GetPredicate(setter.Predicate !, elementPr, options);
var toChange = ((IEnumerable <object>)mlist).Where(predicate.Compile()).ToList();
foreach (var item in toChange)
{
SetSetters((ModifiableEntity)item, setter.Setters !, elementPr);
}
}
break;
case PropertyOperation.RemoveElementsWhere:
{
var predicate = GetPredicate(setter.Predicate !, elementPr, options);
var toRemove = ((IEnumerable <object>)mlist).Where(predicate.Compile()).ToList();
foreach (var item in toRemove)
{
((IList)mlist).Remove(item);
}
}
break;
case PropertyOperation.RemoveElement:
{
var value = ConvertObject(setter.Value, elementPr, options);
((IList)mlist).Remove(value);
}
break;
default:
break;
}
}
else if (setter.Operation == PropertyOperation.CreateNewEntity)
{
var subPr = pr.Type.IsEmbeddedEntity() ? pr : PropertyRoute.Root(TypeLogic.GetType(setter.EntityType !));
var item = (ModifiableEntity)Activator.CreateInstance(subPr.Type) !;
SetSetters(item, setter.Setters !, subPr);
SetProperty(entity, pr, route, item);
}
else if (setter.Operation == PropertyOperation.ModifyEntity)
{
var item = GetProperty(entity, pr, route);
if (!(item is ModifiableEntity mod))
{
throw new InvalidOperationException($"Unable to change entity in {pr}: {item}");
}
SetSetters(mod, setter.Setters !, pr);
SetProperty(entity, pr, route, mod);
}
else if (setter.Operation == PropertyOperation.Set)
{
var value = ConvertObject(setter.Value, pr, options);
SetProperty(entity, pr, route, value);
}
else
{
throw new UnexpectedValueException(setter.Operation);
}
}
}