Example of how to use Stardog's Jena Bindings

AddToJena.java

// start a transaction before adding the data.  This is not required, 
// but it is faster to group the entire add into a single transaction rather
// than rely on the auto commit of the underlying stardog connection.
aModel.begin();

// read data into the model.  note, this will add statement at a time.  
// Bulk loading needs to be performed directly with the BulkUpdateHandler provided
// by the underlying graph, or by reading in files in RDF/XML format, which uses the 
// bulk loader natively.  Alternatively, you can load data into the Stardog
// database using SNARL, or via the command line client.
aModel.getReader("N3").read(aModel, new FileInputStream("data/sp2b_10k.n3"), "");

// done!
aModel.commit();

InitJena.java

// obtain a Jena model for the specified stardog database connection.  Just creating an in-memory 
// database; this is roughly equivalent to ModelFactory.createDefaultModel.
Model aModel = SDJenaFactory.createModel(aConn);

JenaExample.java

/*
 * Copyright (c) 2010-2015 Clark & Parsia, LLC. <http://www.clarkparsia.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.complexible.stardog.examples.jena;

import java.io.FileInputStream;

import com.complexible.common.protocols.server.Server;
import com.complexible.stardog.Stardog;
import com.complexible.stardog.api.ConnectionConfiguration;
import com.complexible.stardog.api.Connection;
import com.complexible.stardog.api.admin.AdminConnection;
import com.complexible.stardog.api.admin.AdminConnectionConfiguration;
import com.complexible.stardog.jena.SDJenaFactory;
import com.complexible.stardog.protocols.snarl.SNARLProtocolConstants;
import org.apache.jena.query.Query;
import org.apache.jena.query.QueryExecution;
import org.apache.jena.query.QueryExecutionFactory;
import org.apache.jena.query.QueryFactory;
import org.apache.jena.query.ResultSetFormatter;
import org.apache.jena.rdf.model.Model;


/**
 * <p>Example of how to use the Jena integration with stardog</p>
 *
 * @author  Michael Grove
 * @since   0.3.3
 * @version 4.0
 */
public class JenaExample {
	// Using Stardog with the [Jena](http://jena.apache.org) API
	// -------------------
	// In this example we'll show how to use the Stardog Jena API bindings.
	public static void main(String[] args) throws Exception {
		// Creating a Server
		// -----------------
		// You'll need a server to connect to, obviously.  For the example, lets create an embedded server.
		Server aServer = Stardog
			                 .buildServer()
			                 .bind(SNARLProtocolConstants.EMBEDDED_ADDRESS)
			                 .start();

		try {
			// Next we'll establish a admin connection to Stardog so we can create a database to use for the example
			try (AdminConnection aAdminConnection = AdminConnectionConfiguration.toEmbeddedServer()
			                                                                    .credentials("admin", "admin")
			                                                                    .connect()) {
				// If the database already exists, we'll drop it and create a fresh copy
				if (aAdminConnection.list().contains("testJena")) {
					aAdminConnection.drop("testJena");
				}

				aAdminConnection.createMemory("testJena");
			}

			// Now we open a Connection our new database

			try (Connection aConn = ConnectionConfiguration
				                         .to("testJena")
				                         .credentials("admin", "admin")
				                         .connect()) {

				// Then we obtain a Jena `Model` for the specified stardog database which is backed by our `Connection`
				Model aModel = SDJenaFactory.createModel(aConn);

				// Start a transaction before adding the data.  This is not required, but it is faster to group the entire add into a single transaction rather
				// than rely on the auto commit of the underlying stardog connection.
				aModel.begin();

				// Read data into the model.  note, this will add statement at a time.  Bulk loading needs to be performed directly with the BulkUpdateHandler provided
				// by the underlying graph, or read in files in RDF/XML format, which uses the bulk loader natively.  Alternatively, you can load data into the stardog
				// database using it's native API via the command line client.
				aModel.getReader("N3").read(aModel, new FileInputStream("data/sp2b_10k.n3"), "");

				// When you're done adding, you need to commit the changes
				aModel.commit();

				// Query that we will run against the data we just loaded
				String aQueryString = "select * where { ?s ?p ?o. filter(?s = <http://localhost/publications/articles/Journal1/1940/Article1>).}";

				// Create a query...
				Query aQuery = QueryFactory.create(aQueryString);

				// ... and run it

				try (QueryExecution aExec = QueryExecutionFactory.create(aQuery, aModel)) {
					// Now print the results
					ResultSetFormatter.out(aExec.execSelect(), aModel);
				}
			}
		}
		finally {
			// You must stop the server when you're done
			aServer.stop();
		}
	}
}

It's running and then terminated with those errors.

SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/C:/Users/pc/Documents/stardog-2.0.3/client/jena/slf4j-log4j12-1.6.4.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/C:/Users/pc/Documents/stardog-2.0.3/server/dbms/slf4j-jdk14-1.7.5.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
log4j:WARN No appenders could be found for logger (org.openrdf.rio.RDFParserRegistry).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

Hi,
Thank you for these examples,

It would be great if we can have a pom.xml for these examples.
I am trying to guess compatible versions with openrdf, jena and sesame to work with the code examples you provided.

Thank you,

Hi,

I agree with @charbull . A pom.xml would be really helpful. I am trying to find dependencies for imports:

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

BR