TurtleDB
A mini distributed database system
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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 00027 public class ReadyToProcessVisitor extends EmptyQueryVisitor 00028 { 00029 protected boolean m_hasNonTableLeaf = false; 00030 00035 public boolean isReady() 00036 { 00037 return !m_hasNonTableLeaf; 00038 } 00039 00040 @Override 00041 public void visit(VariableTable t) 00042 { 00043 if (t.isLeaf()) 00044 m_hasNonTableLeaf = true; 00045 } 00046 }