schedulerclient.java

来自「100多M的J2EE培训内容」· Java 代码 · 共 255 行

package com.borland.training.meetings.clients;

import com.borland.training.meetings.sessions.*;

import javax.naming.*;
import javax.rmi.PortableRemoteObject;
import java.util.*;

public class SchedulerClient {

  static SchedulerHome schedulerHome = null;
  static Scheduler scheduler = null;

  public SchedulerClient() {}

  public static void main(String[] args) {

    if(args.length != 1) {
      usage();
    }

    Object ref;
    try {
      //get naming context
      Context ctx = new InitialContext();

      //look up jndi name
      ref = ctx.lookup("meetings/Scheduler");

      //cast to Home interface
      schedulerHome = (SchedulerHome) PortableRemoteObject.narrow(ref, SchedulerHome.class);
      scheduler = schedulerHome.create();

      String command = args[0];
      if(command.equals("create")) {
	create();
      }
      else if(command.equals("use")) {
	use();
      }
      else if(command.equals("remove")) {
	remove();
      }
      else {
	usage();
      }
      scheduler.remove();
    }
    catch(Exception e) {
      System.err.println("Exception caught");
      e.printStackTrace();
    }
  }

  private static void create() {

    try {
      RoomValue roomValue = new RoomValue("100", (int) 10);
      System.out.println("Creating room: " + roomValue);
      String name = scheduler.createRoom(roomValue);
      System.out.println("Created room id: " + name);
      System.out.println();

      roomValue = new RoomValue("101", (int) 5);
      System.out.println("Creating room: " + roomValue);
      name = scheduler.createRoom(roomValue);
      System.out.println("Created room id: " + name);
      System.out.println();

      System.out.println("Changing capacity of room: " + roomValue.getName());
      roomValue.setCapacity(roomValue.getCapacity() + 10);
      scheduler.updateRoom(roomValue);
      System.out.println();

      Vector attendeeIds = new Vector(3);

      AttendeeValue attendeeValue =
        new AttendeeValue("John Smith", "Developer", "Mr.",
          "[phone]", "[e-mail]");
      System.out.println("Creating attendee: " + attendeeValue);
      Long attendeeId = scheduler.createAttendee(attendeeValue);
      System.out.println("Created attendee id: " + attendeeId);
      attendeeIds.add(attendeeId);
      System.out.println();

      attendeeValue =
        new AttendeeValue("Joe Brown", "Manager", "Mr.",
          "[phone]", "[e-mail]");
      System.out.println("Creating attendee: " + attendeeValue);
      attendeeId = scheduler.createAttendee(attendeeValue);
      System.out.println("Created attendee id: " + attendeeId);
      attendeeIds.add(attendeeId);
      System.out.println();

      attendeeValue =
        new AttendeeValue("Steve Bates", "VP", "Dr.",
          "[phone]", "[e-mail]");
      System.out.println("Creating attendee: " + attendeeValue);
      attendeeId = scheduler.createAttendee(attendeeValue);
      System.out.println("Created attendee id: " + attendeeId);
      attendeeIds.add(attendeeId);
      System.out.println();

      Calendar cal = Calendar.getInstance();
      Date time1 = cal.getTime();
      cal.add(Calendar.HOUR, 1);
      Date time2 = cal.getTime();
      cal.add(Calendar.HOUR, 1);
      Date time3 = cal.getTime();

      MeetingValue meetingValue =
        new MeetingValue("Summer Vacation", time1, time2, "100", attendeeIds);
      System.out.println("Creating meeting: " + meetingValue);
      Long meetingId = scheduler.createMeeting(meetingValue);
      System.out.println("Created meeting id: " + meetingId);
      System.out.println();

      System.out.println("Looking for meeting :" + meetingId);
      meetingValue = scheduler.findMeeting(meetingId);
      System.out.println(meetingValue);
      System.out.println();

      attendeeIds.remove(1);
      meetingValue =
        new MeetingValue("Winter Vacation", time2, time3, "100", attendeeIds);
      System.out.println("Creating meeting: " + meetingValue);
      meetingId = scheduler.createMeeting(meetingValue);
      System.out.println("Created meeting id: " + meetingId);
      System.out.println();

      System.out.println("Looking for meeting: " + meetingId);
      meetingValue = scheduler.findMeeting(meetingId);
      System.out.println(meetingValue);
      System.out.println();

      System.out.println("Changing room for meeting: " + meetingId);
      meetingValue.setRoomName("101");
      scheduler.updateMeeting(meetingValue);
      System.out.println();

      System.out.println("Looking for meeting: " + meetingId);
      meetingValue = scheduler.findMeeting(meetingId);
      System.out.println(meetingValue);
      System.out.println();

      attendeeValue =
        new AttendeeValue("Joan Wilder", "Assistant", "Mrs.",
          "[phone]", "[e-mail]");
      System.out.println("Creating attendee: " + attendeeValue);
      attendeeId = scheduler.createAttendee(attendeeValue);
      System.out.println("Created attendee id: " + attendeeId);

      System.out.println("Signing up attendee: " + attendeeId
        + " to meeting: " + meetingId);
      meetingValue.getAttendeeIds().add(attendeeId);
      scheduler.updateMeeting(meetingValue);

      System.out.println("Looking for meeting:" + meetingId);
      meetingValue = scheduler.findMeeting(meetingId);
      System.out.println(meetingValue);
    }
    catch(Exception e) {
      System.err.println("Exception caught");
      e.printStackTrace();
    }
  }

  private static void use() {

    try {
      String name = "100";
      System.out.println("Looking for room: " + name);
      try {
        RoomValue roomValue = scheduler.findRoom(name);
        System.out.println("Room found: " + roomValue);
      }
      catch (Exception e) {
        System.out.println("Room " + name + " cannot be found");
      }
      name = "101";
      System.out.println("Looking for room: " + name);
      try {
        RoomValue roomValue = scheduler.findRoom(name);
        System.out.println("Room found: " + roomValue);
      }
      catch (Exception e) {
        System.out.println("Room " + name + " cannot be found");
      }

      System.out.println("Getting all rooms");
      Collection roomValues = scheduler.findAllRooms();
      System.out.println(roomValues);

      System.out.println("Getting all attendees");
      Collection attendeeValues = scheduler.findAllAttendees();
      System.out.println(attendeeValues);

      System.out.println("Getting all meetings");
      Collection meetingValues = scheduler.findAllMeetings();
      System.out.println(meetingValues);

      name = "Joan Wilder";
      System.out.println("Looking for attendees: " + name);
      attendeeValues = scheduler.findAttendeesByName(name);
      System.out.println(attendeeValues);

      if(attendeeValues.isEmpty()) {
        return;
      }
      AttendeeValue attendeeValue = (AttendeeValue) attendeeValues.iterator().next();
      Long id = attendeeValue.getId();
      System.out.println("Looking for meetings of attendee: " + name + ", " + id);
      meetingValues = scheduler.findMeetingsOfAttendee(id);
      System.out.println(meetingValues);
    }
    catch(Exception e) {
      System.err.println("Exception caught");
      e.printStackTrace();
    }
  }

  private static void remove() {

    try {
      String name = "100";
      System.out.println("Removing room: " + name);
      try {
        scheduler.removeRoom(name);
      }
      catch (Exception e) {
        System.out.println("Room " + name + " cannot be removed");
      }

      System.out.println("Removing all rooms");
      scheduler.removeAllRooms();

      System.out.println("Removing all meetings");
      scheduler.removeAllMeetings();

      System.out.println("Removing all attendees");
      scheduler.removeAllAttendees();

      System.out.println("Done");
    }
    catch(Exception e) {
      System.err.println("Exception caught");
      e.printStackTrace();
    }
  }

  private static void usage() {
    System.out.println("Usage: vbj RoomClient create | use | remove");
    System.exit(1);
  }
}