[JENA-2255] Setting content type in Jena RDFConnection Header ?

• Type: Question
• Status: Closed
• Priority: Major
• Resolution: Not A Problem
• Component/s: Jena
• Assignee: Unassigned
• Reporter: Mohamed BEN ELLEFI
• Created: 17/Jan/22 14:28
• Updated: 18/Jan/22 20:54
• Resolved: 18/Jan/22 20:54

Description

Hello,
I need to modify the header (specifically the Content-Type) of a request (eg: update) of an RDFConnection object in a Jena transaction. More precisely, I need to add the following Header Content_Type Content-Type = [application/sparql-query; charset=UTF-8]

in the following code

try (RDFConnection conn = connectionFactory.create()) { 
Txn.executeWrite(conn, () -> { 

conn.update(updateRequest);// HERE we want to setup the Content-Type in the header 

}); 
}catch (Exception e) {... }

 
I have setup the connectionFactory as follow

public RDFConnection create() {
HttpClientBuilder httpClientBuilder = HttpClientBuilder.create();
HttpClient httpClient = httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider)
.build();

return
RDFConnectionRemote.create()
.destination(endpointURL)
.queryEndpoint("query")
.updateEndpoint("update")
.httpClient(httpClient)
.parseCheckSPARQL(true)
.build();
}

So, I still need to specify the charset of the request body in the the request header content-Type . How can I do that with JENA ?

Note: the default JENA RDFConnection setting is not sufficient because the remote endpoint still needs the explicit specification of the charset to parse my SPARQL requests containing French accents in the URIs.

Thanks in advance

stackoverflow : https://stackoverflow.com/questions/70742161/setting-content-type-in-jena-rdfconnection-header