benchcommand.java

与postgresql数据库结合的数据库水印软件包

/*
 * 
 * Copyright 2003,2004 The Watermill Team
 *
 * This file is part of Watermill.
 *
 *    Watermill is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; either version 2 of the License, or
 *    (at your option) any later version.
 *
 *    Watermill is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with Watermill; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */
package Watermill.rmill;

import java.util.*;
import java.sql.*;
import Watermill.relational.*;
import Watermill.kernel.*;


public class BenchCommand extends Command {
    public String tablename;
    public int nbproduct,nbclient,nbsale;

    public BenchCommand(String tablename,int nbproduct,int nbclient,int nbsale){
	this.tablename=tablename;
	this.nbproduct=nbproduct;
	this.nbclient=nbclient;
	this.nbsale=nbsale;
    }
    public String toString(){
	return "BenchCommand on "+tablename+" nbproduct "+nbproduct+",nbclient "+nbclient+",nbsale "+nbsale;
    }
    public void execute(Manager m){
	Random r=new Random();
	Statement s=null;
	String query=null;
	String productTable="product"+tablename;
	String salesTable="sales"+tablename;
	try {
	    s=((RManager)m).connection.createStatement();


	    query="DROP TABLE "+productTable;
	    s.executeUpdate(query);

	    query="DROP TABLE "+salesTable;
	    s.executeUpdate(query);

	}catch (SQLException e){};
	query="CREATE TABLE "+productTable+"(idp text primary key,cost int,stoc int)";
	try {
	    s.executeUpdate(query);
	}
	catch (Exception e){
	    Msg.fatal(e);
	}

	query="CREATE TABLE "+salesTable+"(idc text,idp text, primary key (idc,idp))";
	try {
	    s.executeUpdate(query);
	}
	catch (Exception e){
	    Msg.fatal(e);
	}
	for(int i=1;i<=nbproduct;i++){
	    int j=r.nextInt(1000);
	    int k=r.nextInt(10);
	    query="insert into "+productTable+" values ('product"+i+"',"+j+","+k+");";
	    try {
		s.executeUpdate(query);
	    }
	    catch (Exception e){
		Msg.fatal(e);
	    }
	}

	for(int i=1;i<=nbclient;i++){
	    for(int j=1;j<=nbsale;j++){
		int k=r.nextInt(nbproduct-1)+1;
		query="insert into "+salesTable+" values ('client"+i+"','product"+k+"');";
	    try {
		s.executeUpdate(query);
	    }
	    catch (Exception e){
		Msg.debug(e);
	    }
	    }
	}
	Msg.println("BENCH");
    }
}


//  forall $ID in {select distinct idc from sales}
//      global 0 on query { select idp,cost from product where "idp in (select idp from sales where idc=$ID)"