/*
* $Id: PrepareOptionsAction.java 471754 2006-11-06 14:55:09Z husted $
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package examples.options;
import java.util.ArrayList;
import java.util.HashMap;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.util.LabelValueBean;
/**
* Perform any tasks and setup any data that
* must be prepared before the form is displayed.
*
* @version $Rev: 471754 $ $Date: 2006-11-06 15:55:09 +0100 (Lun, 06 nov 2006) $
*/
public class PrepareOptionsAction extends Action {
// ------------------------------------------------------------ Constructors
/**
* Constructor for PrepareOptionsAction.
*/
public PrepareOptionsAction() {
super();
}
// ---------------------------------------------------------- Action Methods
/**
* Process the request and return an <code>ActionForward</code> instance
* describing where and how control should be forwarded, or
* <code>null</code>if the response has already been completed.
*
* @param mapping The ActionMapping used to select this instance
* @param form The optional ActionForm bean for this request (if any)
* @param request The HTTP request we are processing
* @param response The HTTP response we are creating
*
* @exception Exception if an exception occurs
*
* @return the ActionForward to forward control to
*/
public ActionForward execute(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws Exception {
/* An array */
String[] fruits =
{
"Strawberry",
"Apple",
"Orange",
"Pear",
"Mango",
"Banana",
"Pineapple" };
request.setAttribute("fruits", fruits);
/* Two arrays - one for labels and one for values */
String[] colors =
{ "Red", "Orange", "Yellow", "Green", "Blue", "Indigo", "Violet" };
request.setAttribute("colors", colors);
String[] colorCodes =
{
"#FF0000",
"#FFA500",
"#FFFF00",
"#00FF00",
"#0000FF",
"#4B0082",
"#EE82EE" };
request.setAttribute("colorCodes", colorCodes);
/* A Collection */
ArrayList colorList = new ArrayList();
colorList.add("Red");
colorList.add("Orange");
colorList.add("Yellow");
colorList.add("Green");
colorList.add("Blue");
colorList.add("Indigo");
colorList.add("Violet");
request.setAttribute("colorCollection", colorList);
/* A Collection of LabelValue beans */
ArrayList days = new ArrayList();
days.add(new LabelValueBean("Monday", "1"));
days.add(new LabelValueBean("Tuesday", "2"));
days.add(new LabelValueBean("Wednesday", "3"));
days.add(new LabelValueBean("Thursday", "4"));
days.add(new LabelValueBean("Friday", "5"));
days.add(new LabelValueBean("Saturday", "6"));
days.add(new LabelValueBean("Sunday", "7"));
request.setAttribute("days", days);
/* Collection of custom beans */
ArrayList books = new ArrayList();
books.add(new BookBean("0596003285", "Programming Jakarta Struts"));
books.add(new BookBean("1930110502", "Struts in Action"));
books.add(
new BookBean("1861007817", "Professional Struts Applications"));
books.add(new BookBean("0672324725", "Struts Kick Start"));
books.add(new BookBean("0471213020", "Mastering Jakarta Struts"));
books.add(new BookBean("1558608621", "The Struts Framework"));
books.add(new BookBean("0971661901", "Struts Fast Track"));
request.setAttribute("books", books);
/* A Map
*
* Note: We are using a HashMap which is unsorted - the resulting
* options could appear in any order. If you want to your options to be
* in a particular order you should you a SortedMap implementation such
* as the TreeMap. This behaviour is a feature of the standard Map
* implementaions and nothing to to with Struts tags.
*
* Also, we've used an Integer as the key to demonstrate that the
* <html:options> and <html:optionsCollection> tags do not require
* String values for the label and values. If they are passed an object
* other than a String, they will automatically call the toString()
* method and use the result.
*/
HashMap animals = new HashMap();
animals.put(new Integer(1), "Cat");
animals.put(new Integer(2), "Dog");
animals.put(new Integer(3), "Horse");
animals.put(new Integer(4), "Rabbit");
animals.put(new Integer(5), "Goldfish");
request.setAttribute("animals", animals);
// Forward to form page
return mapping.findForward("success");
}
}