You are viewing a plain text version of this content. The canonical link for it is here.
Posted to users@jena.apache.org by Hans-Juergen Rennau <hr...@yahoo.de.INVALID> on 2022/02/06 00:34:37 UTC
Java APIs
Hello,
I am interested in the integration of SPARQL into XQuery. The essential requirement is a Java API for (a) parsing RDF resources into triples, (b) evaluating SPARQL queries. Would Jena be a candidate to offer these? Would the integration of Jena components into an OpenSource project under the 3-clause BSD License be possible?
With kind regards,Hans-Jürgen
PS: The approach envisaged is completely lightweight and very different from https://www.w3.org/Submission/xsparql-language-specification/
Re: Java APIs
Posted by Andy Seaborne <an...@apache.org>.
On 06/02/2022 00:34, Hans-Juergen Rennau wrote:
> Hello,
> I am interested in the integration of SPARQL into XQuery. The essential requirement is a Java API for (a) parsing RDF resources into triples, (b) evaluating SPARQL queries. Would Jena be a candidate to offer these?
Yes.
>Would the integration of Jena components into an OpenSource project > under the 3-clause BSD License be possible?
Answer in another email.
> With kind regards,Hans-Jürgen
> PS: The approach envisaged is completely lightweight and very different from https://www.w3.org/Submission/xsparql-language-specification/
Andy
Re: Java APIs
Posted by Hans-Juergen Rennau <hr...@yahoo.de.INVALID>.
Hi Paul, thank you for your interest! As the current stage is evaluation of technical and legal options as well as of user interest, there is not yet a website describing it.
Please do not hesitate to contact me off-list for more information. We would also be eager to learn about your requirements and expectations.
Kind regards,Hans-Jürgen
Am Sonntag, 6. Februar 2022, 17:56:57 MEZ hat Paul Tyson <ph...@sbcglobal.net> Folgendes geschrieben:
Hans-Jürgen, that sounds like an interesting and useful project. Can you post a website where we can get more information and follow the project?
Thanks,
--Paul
On 2/5/22 18:34, Hans-Juergen Rennau wrote:
> Hello,
> I am interested in the integration of SPARQL into XQuery. The essential requirement is a Java API for (a) parsing RDF resources into triples, (b) evaluating SPARQL queries. Would Jena be a candidate to offer these? Would the integration of Jena components into an OpenSource project under the 3-clause BSD License be possible?
> With kind regards,Hans-Jürgen
> PS: The approach envisaged is completely lightweight and very different from https://www.w3.org/Submission/xsparql-language-specification/
Re: Java APIs
Posted by Hans-Juergen Rennau <hr...@yahoo.de.INVALID>.
Paul, one more piece of information: the XQuery processor in question is BaseX [1].With kind regards,Hans-Jürgen
[1] https://basex.org/
Am Sonntag, 6. Februar 2022, 17:56:57 MEZ hat Paul Tyson <ph...@sbcglobal.net> Folgendes geschrieben:
Hans-Jürgen, that sounds like an interesting and useful project. Can you post a website where we can get more information and follow the project?
Thanks,
--Paul
On 2/5/22 18:34, Hans-Juergen Rennau wrote:
> Hello,
> I am interested in the integration of SPARQL into XQuery. The essential requirement is a Java API for (a) parsing RDF resources into triples, (b) evaluating SPARQL queries. Would Jena be a candidate to offer these? Would the integration of Jena components into an OpenSource project under the 3-clause BSD License be possible?
> With kind regards,Hans-Jürgen
> PS: The approach envisaged is completely lightweight and very different from https://www.w3.org/Submission/xsparql-language-specification/
Re: Java APIs
Posted by Paul Tyson <ph...@sbcglobal.net>.
Hans-Jürgen, that sounds like an interesting and useful project. Can you post a website where we can get more information and follow the project?
Thanks,
--Paul
On 2/5/22 18:34, Hans-Juergen Rennau wrote:
> Hello,
> I am interested in the integration of SPARQL into XQuery. The essential requirement is a Java API for (a) parsing RDF resources into triples, (b) evaluating SPARQL queries. Would Jena be a candidate to offer these? Would the integration of Jena components into an OpenSource project under the 3-clause BSD License be possible?
> With kind regards,Hans-Jürgen
> PS: The approach envisaged is completely lightweight and very different from https://www.w3.org/Submission/xsparql-language-specification/
Re: Java APIs
Posted by Andy Seaborne <an...@apache.org>.
On 06/02/2022 00:34, Hans-Juergen Rennau wrote:
>Would the integration of Jena components into an OpenSource project under the 3-clause BSD License be possible?
Firstly - it's good to get this sorted out at the start. Changing
licenses is messy and sometimes impossible.
This is not official, formal advice. The only way to get that is to have
a legal contract in place. i.e. a pay a lawyer.
Long answer:
There are two cases:
1/ The other project's code is 3-clause BSD.
2/ The other project produces a "product" that is 3-clause BSD.
The Apache License (AL2) in a dependency and 3-clause BSD are compatible
but it depends on what else the other project includes as to the overall
situation.
"product" here being an artifact that combines the dependencies and
other project's code.
1 - yes, The Apache License and 3-clause BSD are compatible.
This is mixing at the point of use. e.g. I'm running GPL software
(Linux, Java), MIT, BSD, ... while developing for Jena on my local machine.
This is the situation if the open project is a github repo, and the end
user builds it, pulling in the dependencies themselves, or if the
project puts jars of only it's own code on to maven central.
The end user is building the system.
2 - the overall product license depends on the other dependencies.
The open source product combines dependencies, whether by including
source code or packaging binaries (uber jars or zipp'ed assemblies).
For example - Fuseki.
If all the dependencies are BSD or AL2, I don't believe there is an issue.
If a dependency is GPL, then GPL applies:
See in particular
https://www.gnu.org/licenses/license-list.en.html#apache2
https://www.apache.org/licenses/GPL-compatibility.html
Andy