malcolmgroves / fluentquery Goto Github PK

Hi,

I'm using XE4, I get the error as stated in the topic, when trying to compile the FluentQueryTests.dpr project.

Ever worse - if the FluentQuery folder is in the 'Library Path', the error happens each time I compile any Delphi project.

Is it a compiler error of XE4? Thanks.

Need order a Collectio, this is possible ?

I want to select from a list of Children of an FMX object all those that support a specific interface, but trying something like the following won't work since there's a plain AsTObjectList that returns a list of TObject, but not one that could return the type you tell it to. Internally the AsTList would use "as OutT" and return TList

Is there some other way to pull this out with a clean syntax?

type TStoryItemCollection = TList;

function TStoryItem.GetStoryItems: TStoryItemCollection;
var IsStoryItem: TPredicate;
begin
IsStoryItem := function(obj: TFmxObject): Boolean
begin
Result := Supports(obj, IStoryItem);
end;

result := ObjectQuery.Select.From(Children).Where(IsStoryItem).AsTList(false);
end;

Hello,
Is It possible to support join in library?

more detail in this link:
https://docs.vapor.codes/3.0/fluent/querying/#join

Adding Enumerators for new types is not that hard currently, but it's a little verbose. This is mostly not really a problem, as most people probably won't need to do it. However, the one place they may want to (and where I definitely want to) is for their own business/domain objects. It would be good if the amount of code needed to create a CustomerQueryEnumerator, for example, was significantly lower than it is today. Something like 1) descend from CustomObjectQueryEnuemerator, IBound/IUnboundCustomObjectQueryEnumerator 2) add implementation of query operations, 3) add signatures to interfaces.

For strings this would delegate to a case sensitive Matches, probably the same for Char. For others, it makes sense to have.

CharQuery uses Char class helpers under the covers. XE2 doesn't have these, but equivalent functions are available.

Also, check where else I've used others.