org.openrdf.repository.sail.SailRepositoryConnection Java Examples

/**
 * Updates the set of rules used for query rewriting.
 *
 * @param conn the connection to use
 */
public final synchronized void
		updateOntology(SailRepositoryConnection conn) {
	try {
		// reload the graph and if not empty load rules from the graph
		URI ctx = conn.getValueFactory().createURI(ontologyContext);
		if (conn.size(ctx) > 0) {
			rules = Rules.fromOntology(new RepositorySource());
		}
	} catch (RepositoryException ex) {
		throw new RuntimeException(ex);
	}
}
 

/**
 * Create a new query rewriter with a set of rules.
 *
 * @param conn the repository connection used for query execution
 * @param rules the set of rules used for rewriting
 */
public QueryRewriter(
		SailRepositoryConnection conn,
		List<Rule> rules) {
	this.rules = new ArrayList<>(rules);
	this.conn = conn;
	this.vf = conn.getValueFactory();
	for (Rule r : rules) {
		r.setValueFactory(vf);
	}
}
 

public SailBooleanExprQuery(ParsedBooleanQuery booleanQuery, SailRepositoryConnection sailConnection) {
	super(booleanQuery, sailConnection);
}
 

public SailTupleExprQuery(ParsedTupleQuery tupleQuery, SailRepositoryConnection sailConnection) {
	super(tupleQuery, sailConnection);
}
 

public SailGraphExprQuery(ParsedGraphQuery graphQuery, SailRepositoryConnection sailConnection) {
	super(graphQuery, sailConnection);
}
 

/**
 * Returns a query rewriter for a given repository connection.
 *
 * @param conn the connection to use
 * @return a query rewriter that uses the TBox from the repository
 */
public synchronized QueryRewriter
		getRewriter(SailRepositoryConnection conn) {
	return new QueryRewriter(conn, rules);
}
 

/**
 * Create a new query rewriter.
 *
 * @param conn the repository connection used for query execution
 */
public QueryRewriter(SailRepositoryConnection conn) {
	this(conn, Collections.EMPTY_LIST);
}
 

/**
 * Create a new query rewriter with a set of rules.
 *
 * @param conn the repository connection used for query execution
 * @param rules the set of rules used for rewriting
 */
public QueryRewriter(
		SailRepositoryConnection conn,
		Rule... rules) {
	this(conn, Arrays.asList(rules));
}
 

/**
 * Returns a new connection for the current repository.
 *
 * @return a new connection
 * @throws RepositoryException if there was a problem getting the connection
 */
protected SailRepositoryConnection getConnection()
		throws RepositoryException {
	return rep.getConnection();
}