SiteExamples.java

package examples;

import java.io.File;

import org.junit.BeforeClass;
import org.junit.Test;
import org.neo4j.graphdb.GraphDatabaseService;
import org.neo4j.index.lucene.LuceneIndexService;
import org.neo4j.kernel.EmbeddedGraphDatabase;
import org.neo4j.rdf.fulltext.FulltextIndex;
import org.neo4j.rdf.fulltext.QueryResult;
import org.neo4j.rdf.fulltext.SimpleFulltextIndex;
import org.neo4j.rdf.model.CompleteStatement;
import org.neo4j.rdf.model.Context;
import org.neo4j.rdf.model.Literal;
import org.neo4j.rdf.model.Uri;
import org.neo4j.rdf.model.Wildcard;
import org.neo4j.rdf.model.WildcardStatement;
import org.neo4j.rdf.store.Neo4jTestCase;
import org.neo4j.rdf.store.RdfStore;
import org.neo4j.rdf.store.VerboseQuadStore;

public class SiteExamples
{
    @BeforeClass
    public static void clear()
    {
        Neo4jTestCase.deleteFileOrDirectory( new File( "target/var/examples" ) );
    }
    
    @Test
    public void rdfStoreUsage()
    {
        // START SNIPPET: rdfStoreUsage
        GraphDatabaseService graphDb = new EmbeddedGraphDatabase( "target/var/examples" );
        LuceneIndexService indexService = new LuceneIndexService( graphDb );
        RdfStore store = new VerboseQuadStore( graphDb, indexService );
        
        CompleteStatement firstStatement = new CompleteStatement(
                new Uri( "http://neo4j.org/mattias" ),
                new Uri( "http://neo4j.org/knows" ),
                new Uri( "http://neo4j.org/emil" ), Context.NULL );
        CompleteStatement secondStatement = new CompleteStatement(
                new Uri( "http://neo4j.org/mattias" ),
                new Uri( "http://neo4j.org/name" ),
                new Literal( "Mattias" ), Context.NULL );
        store.addStatements( firstStatement, secondStatement );
            
        for ( CompleteStatement statement : store.getStatements( new WildcardStatement(
                new Uri( "http://neo4j.org/mattias" ),
                new Wildcard( "predicate" ),
                new Wildcard( "object" ), Context.NULL ), false ) )
        {
            System.out.println( "Found statement " + statement );
        }
        // END SNIPPET: rdfStoreUsage
        store.shutDown();
        indexService.shutdown();
        graphDb.shutdown();
    }
    
    @Test
    public void fulltextIndexing()
    {
        // START SNIPPET: fulltextIndexing
        GraphDatabaseService graphDb = new EmbeddedGraphDatabase( "target/var/examples" );
        LuceneIndexService indexService = new LuceneIndexService( graphDb );
        FulltextIndex fulltextIndex = new SimpleFulltextIndex( graphDb,
                new File( "target/var/examples/fulltext-index" ) );
        RdfStore store = new VerboseQuadStore( graphDb, indexService, null, fulltextIndex );
        
        // ...add some statements
        
        for ( QueryResult searchHit : store.searchFulltext( "rdf AND store" ) )
        {
            System.out.println( searchHit.getStatement() );
        }
        // END SNIPPET: fulltextIndexing
                
        store.shutDown();
        indexService.shutdown();
        graphDb.shutdown();
    }
}