# AGRepositoryAdd.java

`package com.franz.ag.repository.examples;
import static com.franz.ag.repository.examples.AGRepositoryValueFactory.*;
import java.io.FileInputStream;
import java.io.InputStream;
import java.net.URL;
import com.franz.ag.repository.AGRepository;
import com.franz.agbase.AllegroGraph;
import com.franz.agbase.AllegroGraphConnection;
import com.franz.agbase.AllegroGraphException;
import com.franz.agbase.examples.AGPaths;
import org.openrdf.model.Statement;
import org.openrdf.model.ValueFactory;
import org.openrdf.repository.Repository;
import org.openrdf.repository.RepositoryConnection;
import org.openrdf.rio.RDFFormat;
public class AGRepositoryAdd {
/**
* Demonstrates various ways of adding data to a repository.
*
* @param args unused
* @throws AllegroGraphException
*/
public static void main(String[] args) throws Exception {
// Connect to the server, which must already be running.
AllegroGraphConnection ags = new AllegroGraphConnection();
try {
ags.enable();
} catch (Exception e) {
throw new AllegroGraphException("Server connection problem", e);
}
// Get a connection to a fresh repository
AllegroGraph ts = ags.renew("repositoryadd", AGPaths.TRIPLE_STORES);
Repository repo = new AGRepository(ts);
repo.initialize();
RepositoryConnection repoConn = repo.getConnection();
// Load RDFXML from a URL into the null context
repoConn.add(new URL("http://www.w3.org/TR/owl-guide/wine.rdf"), "", RDFFormat.RDFXML);
System.out.println("Loaded " + repoConn.size() + " triples.");
// Get the ValueFactory for the Repository and create some example values.
ValueFactory vf = repo.getValueFactory();
createExampleValues(vf);
repoConn.add(bob, name, nameBob);
System.out.println("Check for added statement: " +
repoConn.hasStatement(bob, name, nameBob, false));
Statement statement = vf.createStatement(alice, name, nameAlice);
repoConn.add(statement);
System.out.println("Check for added statement: " +
repoConn.hasStatement(statement, false));
System.out.println("Check for added statement: " +
repoConn.hasStatement(alice, name, nameAlice, false));
// Load Ntriples from a local file
InputStream defaultGraph = new FileInputStream(AGPaths.dataSources("default-graph.nt"));
try {
repoConn.add(defaultGraph, "", RDFFormat.NTRIPLES);
} finally {
defaultGraph.close();
}
System.out.println("Repository contains newly added statements: " +
repoConn.hasStatement(null, publisher, nameBob, false));
System.out.println("Repository contains newly added statements: " +
repoConn.hasStatement(null, publisher, nameAlice, false));
// add file graph1.nt to context1
InputStream graph1 = new FileInputStream(AGPaths.dataSources("graph1.nt"));
try {
repoConn.add(graph1, "", RDFFormat.NTRIPLES, context1);
} finally {
graph1.close();
}
// add file graph2.nt to context2
InputStream graph2 = new FileInputStream(AGPaths.dataSources("graph2.nt"));
try {
repoConn.add(graph2, "", RDFFormat.NTRIPLES, context2);
} finally {
graph2.close();
}
System.out.println("alice is known in context1?: " +
repoConn.hasStatement(null, name, nameAlice, false, context1));
System.out.println("alice is known in context2?: " +
repoConn.hasStatement(null, name, nameAlice, false, context2));
System.out.println("bob is known in context2?: " +
repoConn.hasStatement(null, name, nameBob, false, context2));
System.out.println("bob is known in context1?: " +
repoConn.hasStatement(null, name, nameBob, false, context1));
// Shutdown the Repository, close the store and disconnect from the server
repoConn.close();
repo.shutDown();
ts.closeTripleStore();
ags.disable();
}
}
`

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