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Posted to users@jena.apache.org by Andy Seaborne <an...@apache.org> on 2020/05/11 15:34:57 UTC

Re: check the validity of RDF representation


On 11/05/2020 15:54, Siddharth Trikha wrote:
> Hi,
> 
> My server would get requests containing various RDF representations like Turtle, RDF/XML, N3, etc and getting a "representation" attribute which tells in what format the RDF is. On the server i need to check the validity of RDF representation such that it each content conforms to the syntax defined by the "representation" attribute.

Use the incoming "Content-Type" HTTP header - that is how HTTP tells the 
server what the body contains.

If not HTTP consider using the MIME type as the value of the 
"representation".

> 
> So I need to check if "representation" says:
> 
>   RDF/XML then the content conforms to RDF/XML synatx.
>   Turtle then the content conforms to TURTLE synatx.
> 
> Is there an easy way to do this in Apache Jena ?

Yes.

Lang lang = RDFLanguages.contentTypeToLang(the-content-type)

and use "lang" to parse the data

	Andy

> 
> I saw SHACL (SHApe Constraint Language) implementation in Jena but that validates like against a Schema.
> 
>