mfindbynamecommand.java

来自「基于Java的软件信息系统－项目管理」· Java 代码 · 共 70 行

package cmd;

import core.*;
import db.*;
import java.util.List;
import javax.swing.JOptionPane;

public class MFindByNameCommand extends MDatabaseCommand
{
    private static final String [] PARAM_NAMES =
    { "first", "last" };
    private static final String [] PARAM_PROMPTS =
    { "Enter first name:", "Enter last name:" };

    public MFindByNameCommand ()
	throws java.io.IOException
    {
	super ();
    }

    public String [] getParameterNames ()
    {
	return PARAM_NAMES;
    }
    
    public String [] getParameterPrompts ()
    {
	return PARAM_PROMPTS;
    }

    protected void executeDatabaseCommand (HotelDB database)
    {
	String first = getParameter ("first");
	String last = getParameter ("last");
	List reservations = database.getReservations (last, first);
        displayResults ("Reservations for " + first + " " + last,
                        reservations);
    }

    protected void displayResultsText (String title, List reservations)
    {
        System.out.println (title);
	if (reservations.size() > 0)
	    DBUtilities.displayReservations (reservations);
	else
	    System.out.println ("No reservations for: " + 
                                getParameter ("first") + 
				" " + getParameter ("last"));
    }

    public String getMenuName ()
    { return "Find By Name..."; }
    public String getName ()
    { return "name"; }
    public String getDescription ()
    { 
	return "Finds a reservation by customer name"; 
    }
    public Command makeInstance ()
    {
	try
	{
	    return new MFindByNameCommand ();
	} catch (java.io.IOException e)
	{
	    return null;
	}
    }
}