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 00020 import java.util.*; 00021 00028 public class QueryPlan extends HashMap<String,Set<Relation>> 00029 { 00033 private static final long serialVersionUID = 1L; 00034 00035 public void put(String key, Relation r) 00036 { 00037 Set<Relation> rels = new HashSet<Relation>(); 00038 rels.add(r); 00039 this.put(key, rels); 00040 } 00041 }