mshowallcommand.java

基于Java的软件信息系统－项目管理

package cmd;

import core.*;
import db.*;
import java.util.List;

public class MShowAllCommand extends MDatabaseCommand
{
    private static final String [] PARAM_NAMES =
    { };
    private static final String [] PARAM_PROMPTS =
    { };

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

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

    public boolean isInitialized ()
    {   return true; }

    protected void executeDatabaseCommand (HotelDB database)
    {
	List reservations = database.getReservations();
        displayResults ("All Reservations", 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 in database."); 
    }

    public String getMenuName ()
    { return "Show All"; }

    public String getName ()
    { return "all"; }

    public String getDescription ()
    { 
	return "Shows all the reservations"; 
    }
    public Command makeInstance ()
    {
	try
	{
	    return new MShowAllCommand ();
	} catch (java.io.IOException e) { return null; }
    }
}