public ResultSet query(String query) {
        
        ResultSet rs = null;
        Statement stmt = null;        
        
        try {
            stmt = conn.createStatement();
            if(debugmode) {
                addDebug("Statement created","query()");
            }
        }
        catch(SQLException connex) {

                System.out.println("N1: "+connex.toString());
                addError("Statement creation failed, zie serverlogs","query()");

        }
        finally {

                try {
                    if (stmt.execute(query)) {
                        rs = stmt.getResultSet();
                    }
                    if(debugmode) {
                        addDebug("Query executed: "+query,"query()");
                    }         
                }
                catch(SQLException ex) {

                    System.out.println("N2: "+ex.toString()); 
                    addError("Query failed: "+query+", zie serverlogs","query()");
                }
        }
        
        return rs;
        
    }