/** * Used to write Resources for a Subject. Resources will use "ObjectNode" method. * * @param predicate PredicateNode * @param object Literal * @param writer PrintWriter * @throws GraphException */ protected void writeStatement( Graph graph, SubjectNode subject, PredicateNode predicate, Literal object, PrintWriter writer) throws GraphException { // determine if the Literal has a datatype URI datatype = object.getDatatypeURI(); // Get the lexical form of the literal String literalObject = object.getLexicalForm(); // Create the StringBuffer to hold the resultant string StringBuffer buffer = new StringBuffer(); // Escape the XML string StringUtil.quoteAV(literalObject, buffer); if (datatype != null) { // write as: <predicateURI rdf:datatype="datatype">"Literal value" // </predicateURI> writer.println( " <" + this.getURI(predicate) + " " + RDF_PREFIX + ":datatype=\"" + datatype + "\">" + buffer.toString() + "</" + this.getURI(predicate) + ">"); } else { // write as: <predicateURI>"Literal value"</predicateURI> writer.println( " <" + this.getURI(predicate) + ">" + buffer.toString() + "</" + this.getURI(predicate) + ">"); } }