private String renderTupleExpr(TupleExpr theExpr) throws Exception {
  SparqlTupleExprRenderer aRenderer=new SparqlTupleExprRenderer();
  return aRenderer.render(theExpr);
}

private String renderTupleExpr ( TupleExpr theExpr ) throws Exception { SparqlTupleExprRenderer aRenderer = new SparqlTupleExprRenderer ( ) ; return aRenderer . render ( theExpr ) ; }
renders the tuple expression as a query string .
