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Continuing with my example above. Let’s say I want to list the files in my current directory:
q)key’:.
KDB Insights introduces object storage that allows us to e.g. list files in an S3 bucket:
q)key”$”:s3://kxinsights-marketplace-data/”
”’s#’_inventory’db’par.txt’sym’symlinks
The functionality to interact with S3 is not part of vanilla Q. It’s provided by KDB Insights – in particular the shared object libobjstor.so shipped with KDB Insights.
My question is how do we create such custom protocols using the C API? As a contrived example, perhaps I wanted to list all open positions in my IBKR trading account:
q)key’$”:ibkr://account1/”
Of course, I could create a regular function to do this, but let’s assume I really, really like this new syntax.