TurtleDB
A mini distributed database system
|
00001 /*------------------------------------------------------------------------- 00002 Simple distributed database engine 00003 Copyright (C) 2012 Sylvain Hallé 00004 00005 This program is free software: you can redistribute it and/or modify 00006 it under the terms of the GNU General Public License as published by 00007 the Free Software Foundation, either version 3 of the License, or 00008 (at your option) any later version. 00009 00010 This program is distributed in the hope that it will be useful, 00011 but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00013 GNU General Public License for more details. 00014 00015 You should have received a copy of the GNU General Public License 00016 along with this program. If not, see <http://www.gnu.org/licenses/>. 00017 -------------------------------------------------------------------------*/ 00018 package ca.uqac.dim.turtledb; 00019 00020 public class EmptyQueryVisitor extends QueryVisitor 00021 { 00022 public void visit(Projection r) throws VisitorException {} 00023 00024 public void visit(Selection r) throws VisitorException {} 00025 00026 public void visit(Table r) throws VisitorException {} 00027 00028 public void visit(VariableTable r) throws VisitorException {} 00029 00030 public void visit(Union r) throws VisitorException {} 00031 00032 public void visit(Intersection r) throws VisitorException {} 00033 00034 public void visit(Join r) throws VisitorException {} 00035 00036 public void visit(Product r) throws VisitorException {} 00037 00038 }