Jena3 Java上传模型到Virtuoso

Question

I am making a Java service based on Jena3, in order to store a new Model into Virtuoso. I am using Java3 Jena 3, with the following Maven dependency:

<!-- https://jena.apache.org/download/maven.html -->
<dependency>
    <groupId>org.apache.jena</groupId>
    <artifactId>apache-jena-libs</artifactId>
    <type>pom</type>
    <version>3.1.0</version>
</dependency>

I am trying to make store the following model (just an example), using the following code:

import org.apache.jena.rdf.model.Model;
import org.apache.jena.rdf.model.ModelFactory;

VirtModel virtualModel = VirtModel.openDatabaseModel(VIRTUOSO_GRAPH, VIRTUOSO_URL, VIRTUOSO_USERNAME, VIRTUOSO_PASSWORD);
Model model = ModelFactory.createDefaultModel();
model.createResource("http://example.com/my#resource");
//Add model
virtualModel.add(model);

However, it seems class VirtModel is not recognized. I cannot import virtuoso.jena.driver.*; .

I tried to put different maven dependencies for Virtuoso JDBC (found on different githubs with examples) but it is not working.

I think this have to be retrieved from https://github.com/openlink/virtuoso-opensource but I do not know how can I do this.

Anyone experiencing the same issue? Thanks in advance.

Answer 1

• I think you are using Jena 3 (not Java 3)…
• The Virtuoso Jena documentation is likely to be helpful. The specific components you need (JDBC Driver, Jena Provider for Jena 3) are downloadable here and should then be included in your project.
• There is an open issue for adding these components to the Maven Central Repository to which you could add your voice.