Stardog Database Connection with Jena

Support
1

Hi,

I am trying to connect to a Stardog Database in order to add some triples. I am following the example shown in this tutorial.

try (final AdminConnection aConn = AdminConnectionConfiguration.toServer(url)
.credentials(username, password)
.connect()) {

  // Now we open a Connection our new database
  try (Connection conn = ConnectionConfiguration
  	                        .to("myDB")
  	                        .credentials(username, password)
  	                        .connect()) {

(...)

Connection to Stardog is done correctly. However, when I try to connect to the database, the following error occurs:
"com.complexible.stardog.StardogException: No driver was found which supports the connection string: 'embed://myNewDB', please double-check the URL and verify the protocol is correct and try again."

Anyone else dealing with this problem?

Thanks in advance,

2

That gist is several years old and only valid up to Stardog 3 or so. We now maintain a stardog-examples github repo, in which you can find the updated Jena tutorial

3

Hi @stephen,

Thanks for the reply. I see there are some changes in the updated Jena tutorial you suggested.

However, I have some problems with the following imports:

import com.complexible.stardog.Stardog;
import com.complexible.stardog.jena.SDJenaFactory;

I am using maven, and looking at other posts in this forum, I completed my pom.xml like this:

stardog-public http://maven.stardog.com
com.complexible.stardog stardog-spring 3.0.0 com.complexible.stardog client-http 5.0.1 pom

I guess I am missing some kind of "stardog-jena" and "Stardog" dependencies, but I am not sure...

4

You are correct. You can look at the build.gradle that applies to the tutorial class for a more complete example, but for those two classes specifically you will need to bring in the com.complexible.stardog:client-embedded:${stardogVersion} dependency as well as com.complexible.stardog.jena:stardog-jena:${stardogVersion}, replacing ${stardogVersion} with the version of stardog to which you are connecting.

5

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