TurtleDB
A mini distributed database system
src/ca/uqac/dim/turtledb/QueryPlan.java
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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 }