/*
 *
 * Copyright (c) 2000 Scott Oaks and Henry Wong. All Rights Reserved.
 *
 * Permission to use, copy, modify, and distribute this software
 * and its documentation for NON-COMMERCIAL purposes and
 * without fee is hereby granted.
 *
 * This sample source code is provided for example only,
 * on an unsupported, as-is basis. 
 *
 * AUTHOR MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
 * THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
 * TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. AUTHOR SHALL NOT BE LIABLE FOR
 * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
 * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
 *
 * THIS SOFTWARE IS NOT DESIGNED OR INTENDED FOR USE OR RESALE AS ON-LINE
 * CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS REQUIRING FAIL-SAFE
 * PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES, AIRCRAFT
 * NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, DIRECT LIFE
 * SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH THE FAILURE OF THE
 * SOFTWARE COULD LEAD DIRECTLY TO DEATH, PERSONAL INJURY, OR SEVERE
 * PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH RISK ACTIVITIES").  AUTHOR
 * SPECIFICALLY DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR
 * HIGH RISK ACTIVITIES.
 */


import java.rmi.*;
import net.jini.core.lease.*;
import net.jini.space.*;
import com.sun.jini.lease.*;

public class ConvertClient {

    public static void main(String[] args) throws Exception {
        System.setSecurityManager(new RMISecurityManager());
        LeaseRenewalManager lrm = new LeaseRenewalManager();

        // Find the JavaSpaces service
        ServiceFinder sf = new ServiceFinder(JavaSpace.class);
        JavaSpace js = (JavaSpace) sf.getObject();

        Conversion request = new Conversion(5, true);
        Conversion result = (Conversion) js.read(request, null, JavaSpace.NO_WAIT);
        if (result == null) {
            // There was no cached result. Make a new request and retrieve
            // that answer
            request.done = new Boolean(false);
            Lease l = js.write(request, null, Lease.FOREVER);
            lrm.renewUntil(l, Lease.FOREVER, null);
            request.done = new Boolean(true);
            result = (Conversion) js.read(request, null, Long.MAX_VALUE);
            lrm.cancel(l);
            lrm.remove(l);
        }
        // else just use the cached value

        System.out.println(result.result);
        System.exit(0);
    }
}