Hello,

we have tried to generate some layers from MiraMon to SHP, KML, or GPKG, and we 
have noticed that they do not support "List" field cases. They give a warning 
like: "The output driver does not seem to natively support IntegerList type for 
field "XX".

It could be interesting if a driver could output a feature with "List" type 
fields as the same feature repeated as many times as the elements in the List, 
if the user requests it (via -lco). This would be beneficial to avoid losing 
elements from fields that are of type List.

The current implementation generates an IntegerList, but this modification 
could be done.

As we want to export the information somehow, even if it's not perfect, we are 
wondering which of these solutions we can apply:
1. (preferable) export N objects, each with a single attribute, not as an 
"IntegerList" but as N "Integer/Float, etc" objects.
2. export a single object with a single attribute (which could be chosen with a 
-lco).

However, we are wondering how we should handle the GetFeatureCount() function 
in case 1 (from the above).
And we also wonder how to handle the GetNextRawFeature() function. Since this 
function can indicate that it has returned more than one element (in case 1).

Thanks for taking it in consideration.


Abel Pau Garcia
GIS developer
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