getinstancecommand.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 Watermill.kernel.*;

public class GetInstanceCommand extends Command {
    public String dbName;
    public String userName;
    public String poolName;

    public GetInstanceCommand(String dbName,String userName,String poolName){
	this.dbName=dbName;
	this.userName=userName;
	this.poolName=poolName;
    }
    public void execute(Manager m){
	Msg.debug("READING POOL");
	Pool p=m.pools.getPool(poolName);
	UserData client=m.users.getUserData(userName);
	Document d=m.duplicate(p.document,dbName,client);
	Watermark w=p.watermark(d,client.publicKey.hashCode());
	m.broadcast.add(client,p,w);
	Msg.println("GET INSTANCE, MARK SIZE "+w.size());
	if (p.document.checkLocalConstraints(d,p.wschema.localConstraints))
	    Msg.println("LOCAL CONSTRAINTS CHECKED");
	else
	    Msg.println("WARNING : LOCAL CONSTRAINTS NOT CHECKED !");

	if (p.document.checkGlobalConstraints(d,p.wschema.globalConstraints))
	    Msg.println("GLOBAL CONSTRAINTS CHECKED");
	else
	    Msg.println("WARNING : GLOBAL CONSTRAINTS NOT CHECKED !");
    }
    public String toString(){
	return "GetInstanceCommand for "+dbName+" to "+userName+" with "+poolName;
    }
}