HaxeFoundation / record-macros

Macro-based ORM (object-relational mapping)
MIT License
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SPOD sys.db.Manager cacheObject Neko/PHP inconsistency #20

Open filt3rek opened 6 years ago

filt3rek commented 6 years ago

Hej,

I don't know if it has been solved yet, but as it's not longer maintened by Haxe, I repost it here (original post : https://github.com/HaxeFoundation/haxe/issues/5636)

I'm sorry I've just tested that on Neko and PHP targets playing with DBAdmin first, and I get inconsistency here between the 2 targets : https://github.com/HaxeFoundation/haxe/blob/development/std/sys/db/Manager.hx#L390 It seems that when creating an empty instance on Neko like that : untyped dollarnew(x); where x is an object with fields/values, it fills these fields automatically on the class instance. But on the others targets this one is used : Type.createEmptyInstance( My ClassName ); Here it doesn't fill the class fields, it's ok, but then in this cacheObject function, there miss this fill. So I added that : Reflect.setField( o, f, val ); just after https://github.com/HaxeFoundation/haxe/blob/development/std/sys/db/Manager.hx#L401

So at the end it gives that :

function cacheObject( x : T, lock : Bool ) {
        #if neko
        var o = untyped __dollar__new(x);
        untyped __dollar__objsetproto(o, class_proto.prototype);
        #else
        var o : T = Type.createEmptyInstance(cast class_proto);
        untyped o._manager = this;
        #end
        normalizeCache(x);
        for (f in Reflect.fields(x) )
        {
            var val:Dynamic = Reflect.field(x,f), info = table_infos.hfields.get(f);
                        Reflect.setField( o, f, val );
            if (info != null)
            {
                var fieldName = getFieldName(info);
                Reflect.setField(o, fieldName, val);
            }
        }
        Reflect.setField(o,cache_field,x);
        addToCache(o);
        untyped o._lock = lock;
        return o;
    }

Now all is working fine and DBAdmin gives me all the fields like on Neko target.

I digged to see where the differences between Neko and PHP come from exactly, I've been until sys.db.Manager where in the cacheObject function, the returned created instance of the class is not filled correctly on others targets than Neko. Maybe it should be fixed there ? I don't know because like you, I've seen this bug only on dbadmin for the moment...

jonasmalacofilho commented 5 years ago

Hi again @filt3rek ,

Can you share an example of what the real world inconsistency looks like?

I see that the behavior can be different between targets but, just from looking at the code, I'm actually more tempted to go the opposite route and remove the (potential) extra fields from Neko.

filt3rek commented 5 years ago

Hej again Jonas ! :)

Well, It's one year ago, I'll try to retrieve my example and post it. What I remember roughly is that you see "null" for objects in dbadmin/php... But It's better I retrieve my example...