Example #1
0
 /** {@inheritDoc} No binding will be emitted if the value is null (unbound). */
 protected void addBinding(Variable var, Object value) throws IOException {
   if (value != null) {
     s.append(i(3)).append("<binding name=\"").append(var.getName()).append("\">");
     // no dynamic dispatch, so use if/then
     if (value instanceof URIReference) addURI((URIReference) value);
     else if (value instanceof Literal) addLiteral((Literal) value);
     else if (value instanceof BlankNode) addBNode((BlankNode) value);
     else
       throw new IllegalArgumentException(
           "Unable to create a SPARQL response with an answer containing: "
               + value.getClass().getSimpleName());
     s.append(i(3)).append("</binding>");
   }
 }
Example #2
0
 /** {@inheritDoc} */
 protected void addHeaderVariable(Variable var) throws IOException {
   s.append(i(2)).append("<variable name=\"");
   s.append(var.getName()).append("\"/>");
 }