CODEWITHSUNDEEP
restsparqlrdf
Mayke Ferreira
Mayke Ferreira

Reputation: 174

CumulusRDF Update Query

I'm trying to insert data my CumulusRDF via REST.

Problem: If i'm doing a query, it works nice, with the GET method

Ex: A simple query:

select * 
where
{ 
  ?s ?p ?o.
}

GET method:

curl -X GET --header 'Accept: application/sparql-results' 'http://localhost:9090/cumulus/sparql?query=select+*+where+%7B%3Fs+%3Fp+%3Fo.%7D&accept=text%2Fhtml'

But, when i try to insert data, it fails.

Query:

PREFIX dc: <http://purl.org/dc/elements/1.1/>
INSERT DATA
{ 
  <http://example/book1> dc:title "Harry Potter".
}

POST method:

curl -i -X POST -H 'Content-Type: application/sparql-query' 'http://localhost:9090/cumulus/sparql?query=PREFIX+dc%3A+%3Chttp%3A%2F%2Fpurl.org%2Fdc%2Felements%2F1.1%2F%3E%0AINSERT+DATA%0A%7B+%0A++%3Chttp%3A%2F%2Fexample%2Fbook1%3E+dc%3Atitle+%22Harry+Potter%22.%0A%7D

Erro: 

HTTP/1.1 400 Bad Request

What i'm doing wrong? CumulusRDF is instaled in a Docker with Apache Cassandra DB.

Upvotes: 0

Views: 45

Answers (1)

AndyS
AndyS

Reputation: 16700

In SPARQL queries are not updates. There are two separate languages.

If you use the HTTP query string, content-type is irrelevant. It should be?update=.

Better is to POST with the update in the HTTP body and using

Content-Type: application/sparql-update

Upvotes: 3

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