Getting key-value-pairs from the context.

[AndreasMeier12]

I am working with an RO-Crate that has key value pairs in the context. I am using version 1.1 of this library.

I cannot find a way to access them. Internally, they are kept in the CrateMetadataContext, I don't see any method returning this type.
Specifically, I am looking at this particular Ro-Crate.
This is a pared down example of what the ro-crate-metadata.json looks like:

{
  "@context": [
    "https://w3id.org/ro/crate/1.1/context",
    {

      "scicat": "_:"
    }
  ],
  "@graph": []
}

I would like to read the pair "scicat": "_:" out of the context.
Is there a way of doing this without getting the CrateMetadataContext directly?
It's possible to extract this from the JsonMetaData but I wouldn't say no to a more convenient way.

If not would it be possible to add this functionality?

[ThomasJejkal]

Thank's for opening the issue and it's absolutely correct, that there is currently no way to access the context except for indirect writing. While I can somehow understand, why modifications to the context of an RO-Crate hold in memory is nothing we want (as this may invalidate the crate, implementing read access should not be a big deal.

I'll talk to Andreas if he sees any reasons against it, if not, one of us will add it to the next version.

[AndreasMeier12]

@ThomasJejkal Thank you for your response. I see it the same way, read access should not lead to invalid crates.
I will continue working with the deserialized JSON for the moment.

[Pfeil]

Thank you for your contribution! I also think this makes sense. I implemented this in #245 and merged it into the development branch (see #233). It is scheduled to be available from v2.1.0 on. I hope the implementation makes sense for your use case.

[AndreasMeier12]

I just tried it out and it worked, thank you very much!