kevinjqliu commented on issue #675:
URL:
https://github.com/apache/arrow-rs-object-store/issues/675#issuecomment-4675792321
> My concern is that it will be hard to maintain and keep up to date as
object store vendors change their support feature sets, etc
From researching the ordered listing behavior, we already found some edge
cases for aws and azure. There's a real concern on maintainability. For
example, we can mark GCS with ordered listing capability today. If and when GCS
comes out with a product line without this guarantee, we'd have to keep the
capabilities up to date.
> Maybe we could add a as_any API that would allow people who are interested
in specializing the implementation to do so by checking as_any().downcast_ref()
🤔
I had to ask AI to make sense of this 😄
Basically instead of object_store saying:
```
store.capabilities().has(Capability::OrderedListing)
```
the caller could say:
```
if store.as_any().downcast_ref::<AmazonS3>().is_some() {
// I know this is AmazonS3, so I can specialize
}
```
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