How to save and load rdf indexes into/from a file?

Help!
1

I’m using: SWI-Prolog version 2.1.22

I want the code to:

I am using library(semweb/rdf_litindex) to create customized rdf indexes. I would like to pre-generate these index maps and save them into a file and reload them at start at run-time.

How to accomplish this?

Thanks,

Nan

2

See: library(persistency): Provide persistent dynamic predicates.

This post which while not perfect is the most refined example I know

Also see: Quick load files

3

Hi Eric,

Thank you so much for the quick response.

my understanding is that library(persistency) will persist rdf/3 and rdf/4 only not the literal index map. I am looking to persist the literal index map and able to reload it.

Nan

4

Thanks for the update. I have never used library(persistency) with rdf/3 and rdf/4 so I can’t say.

I don’t plan to try, but if you do and have problems, I won’t run away, but can’t promise I can be of much help.

5

There is no support for that. Unless one uses some smart binary format, to save the maps there is probably not that much to gain with save/reload vs recompute.

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