query.java

简单的议程管理的小实验,包含可运行BAT文件和TEST用例

package agenda.command;
import agenda.Exception.*;
import agenda.data.*;
import java.util.*;
import java.text.*;

/**
 * Query command
 * @author wc
 */
public class QUERY implements Command{
    String userName;
    String password;
    Calendar start, end;
    
    /**
     * Command parse method
     * @param args
     * @throws java.lang.Exception
     * @throws agenda.Exception.InvalidCommandException
     */
    public void parse(String[] args) throws Exception, InvalidCommandException
    {
        if(args.length != 5)
            throw new InvalidCommandException("query");
        userName = args[1];
        password = args[2];
        try{
            String format = "yyyy-MM-dd,kk:mm:ss";
            SimpleDateFormat sdf = new SimpleDateFormat(format);
            start = new  GregorianCalendar();
            end = new  GregorianCalendar();
            start.setTime(sdf.parse(args[3]));
            end.setTime(sdf.parse(args[4]));
        }
        catch(Exception e){
            throw e;
        }
    }
    
    /**
     * Command execute method
     * @throws java.lang.Exception
     * @throws agenda.Exception.InvalidIDorPasswordException
     */
    public void execute() throws Exception, InvalidIDorPasswordException
    {
        try{
            agenda.data.Data.userList.checkUser(userName, password);
            ArrayList<Meeting> result = new ArrayList<Meeting>();
            for(Meeting m:agenda.data.Data.meetingList)
                if(m.creator.equals(userName)||m.partner.equals(userName))
                    if(!start.after(m.start)&&!end.before(m.start)
                    &&!start.after(m.end)&&!end.before(m.end))
                        result.add(m);
            if(result.isEmpty()) System.out.println("0 result.\n");
            else
            {
                    System.out.print(userName + "\'s agenda in ");
                    String format = "yyyy-MM-dd kk:mm:ss";
                    SimpleDateFormat df=new SimpleDateFormat(format);
                    System.out.println(df.format(start.getTime()) + " to " + df.format(end.getTime()) + " :");
                    System.out.println("-----------------------------------");
                    for(Meeting m:result){
                        System.out.print(m.toString());
                        System.out.println("-----------------------------------");
                    }
                    System.out.println(result.size() + " results.\n");
            }
        }
        catch(InvalidIDorPasswordException iipe){
            throw iipe;
        }
    }
}