Support for URDNA2015?

[peacekeeper]

Is anyone working on adding support for the URDNA2015 RDF Dataset Normalization algorithm?

jsonld-java supports URGNA2012, but that's outdated...

[filip26]

Hi, please feel free to open PR.

[simon-greatrix]

I have an implementation of URDNA2015:

https://github.com/simon-greatrix/rdf-urdna

[peacekeeper]

@simon-greatrix great, are you planning to release this under Apache 2 license and/or merge it into this project here?

[simon-greatrix]

@peacekeeper I have requested permission to release it under Apache 2 license from my employers and expect to hear back about it today.

@filip26 It's obviously your call as to whether you see normalization as something that should be included in Titanium. I would suggest adding an appropriate method to the "Rdf" and "RdfProvider" classes?

[filip26]

Hi @simon-greatrix,
URDNA is a complementary technology to JSON-LD, not needed to perform JSON-LD algorithms nor required by every user. It's a great extension that should be distributed as a standalone library.

Titanium is an open project and welcomes a contribution. Your implementation could be included as an extension (root project directory refactoring is needed) if:

• Licensing, intellectual property ownership, of your code is resolved. As far as I understand your employer holds IP and it would be unfortunate to put whole Titanium code at risk in a case of unresolved relations
• You plan to contribute to Titanium in the future and you are willing to maintain URDNA code

Anyway, you make me realize that it would be great to have a list of projects using and extending Titanium as part of the project's README.

[simon-greatrix]

@peacekeeper My employers decided to debate our entire open source strategy so it took a lot longer than expected. I have now released my URDNA implementation under Apache 2.

For the time being, I will be maintaining it as a separate library rather than as part of Titanium.

[peacekeeper]

@simon-greatrix thanks a lot! I also did my own implementation just a few days before you mentioned yours: https://github.com/decentralized-identity/jsonld-common-java/tree/master/src/main/java/foundation/identity/jsonld/normalization

But I think I will use yours going forward. Closing this.