cdlist.java

webwork source

/*
 * WebWork, Web Application Framework
 *
 * Distributable under Apache license.
 * See terms of license at opensource.org
 */
package webwork.examples.i18n;

import webwork.action.ActionSupport;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;
import java.util.Locale;

/**
 * This code is an adaptation of the I18N example from the JavaWorld article by Govind Seshadri.
 * http://www.javaworld.com/javaworld/jw-03-2000/jw-03-ssj-jsp_p.html
 */
public class CDList
   extends Shop
{
   // Attributes ----------------------------------------------------
   static List cds;

   static
   {
      // This never changes, so we do it once only
      cds = new ArrayList();

      // We read the values from a file so that it is easy to change
      try
      {
         InputStream resource = CDList.class.getResourceAsStream("cdlist.txt");
         BufferedReader in = new BufferedReader(new InputStreamReader(resource));
         String cdInfo;
         while ((cdInfo = in.readLine()) != null)
         {
            StringTokenizer tokens = new StringTokenizer(cdInfo, ",");
            CD cd = new CD();
            cd.setAlbum(tokens.nextToken());
            cd.setArtist(tokens.nextToken());
            cd.setCountry(tokens.nextToken());
            cd.setPrice(new Double(tokens.nextToken()).doubleValue());
            cds.add(cd);
         }
         in.close();
      } catch (IOException e)
      {
         e.printStackTrace(System.err);
         System.err.println("Could not read list of CD's");
      }
   }

   // Public --------------------------------------------------------
   public List getCDList()
   {
      return cds;
   }

   public CD getCD(String title)
   {
      List l = getCDList(); // Call getCDList so it can be replaced with database access if necessary
      for (int i = 0; i < l.size(); i++)
      {
         CD cd = (CD)l.get(i);
         if (cd.getAlbum().equals(title))
         {
            return cd;
         }
      }

      throw new IllegalArgumentException("No such CD");
   }
}