Some important actions

LoginAction.java

package vincent.actions;

import java.io.UnsupportedEncodingException;
import java.util.Locale;
import java.util.ResourceBundle;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

public class LoginAction extends Action{

 
public ActionForward perform(ActionMapping mapping,
  ActionForm form,
  HttpServletRequest request,
  HttpServletResponse response){
 //can logon?
 boolean isValidate = false;
 //get the LoginForm attribute
 String userName = ((LoginForm)form).getUsername();
 String passWord = ((LoginForm)form).getPassword();
 //validate
 if(userName.equals("Admin") && passWord.equals("Admin")){
  isValidate = true;
 }
 else if(userName.equals("Customer") && passWord.equals("Customer")){
  isValidate = true;
 }
 //add to ActionErrors
 if(isValidate == false){
  ActionErrors errors = new ActionErrors();
  errors.add(ActionErrors.GLOBAL_MESSAGE,new ActionError("error.login.failed"));
  this.saveErrors(request,errors);
  return mapping.findForward("Logon"); 
 } 
 //get the session
 HttpSession session = request.getSession();
 session.setAttribute("userName",userName);
 session.setAttribute("passWord",passWord);
 session.setAttribute("LoginForm",(LoginForm)form);//Put it in the session cause the jsp may use it
 return (mapping.findForward("View"));
  
  
}

}

LoginForm.java

package vincent.actions;

import javax.servlet.http.HttpServletRequest;

import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.validator.ValidatorForm;

public class LoginForm extends ValidatorForm{
 //declare the fields of the form here
 private String username = null;
 private String password = null;

 
 public void setUsername(String username){
  this.username = username;
 }
 public void setPassword(String password){
  this.password = password;
 }
 public String getUsername(){
  return (this.username);
 }
 public String getPassword(){
  return (this.password);
 }
 /**
  * This is the validation
  * It must not be omitted.It MUST not be implemented cause the ValidationPlugin will do that.
  */
 public ActionErrors validate(ActionMapping mapping,HttpServletRequest request){
  return null;
 }
}

ViewAction.java

package vincent.actions;

import java.io.IOException;
import java.rmi.RemoteException;
import java.util.ArrayList;
import java.util.Hashtable;
import java.util.Iterator;

import javax.ejb.CreateException;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.rmi.PortableRemoteObject;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

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.action.DynaActionForm;

import vincent.CMP.ProductLocal;
import vincent.SLSBean.*;
import vincent.util.PageControl;

public final class ViewAction extends Action{
 //cache the accessManagerHome here
 AccessManagerHome accessManagerHome = null;
 ArrayList productList = null;
 ArrayList array = new ArrayList();
 
 /**
  * Initializing the accessManagerHome
  *
  */
 public void initAccessManager(){
  System.out.println("Loading AccessManager in the servlet");
  try {
   accessManagerHome = getHome();
  } catch (NamingException e) {
   //Have to add something later
   e.printStackTrace();
  }
 }
 
 /**
  * Get the AccessManagerHome
  * @return
  * @throws NamingException
  */
 public AccessManagerHome getHome() throws NamingException {
  Object result = getContext().lookup(AccessManagerHome.JNDI_NAME);
  return (AccessManagerHome)PortableRemoteObject.narrow(result,AccessManagerHome.class);
 }
 
 /**
  * Get the Context for JNDI
  * @return
  * @throws NamingException
  */
 public InitialContext getContext() throws NamingException {
  Hashtable props = new Hashtable();

  props.put(
    InitialContext.INITIAL_CONTEXT_FACTORY,
  "org.jnp.interfaces.NamingContextFactory");
  props.put(InitialContext.PROVIDER_URL, "jnp://127.0.0.1:1099");

  // This establishes the security for authorization/authentication
  // props.put(InitialContext.SECURITY_PRINCIPAL,"username");
  // props.put(InitialContext.SECURITY_CREDENTIALS,"password");

  InitialContext initialContext = new InitialContext(props);
  return initialContext;
 }
 
 public void setArrayList(ArrayList arrayList,PageControl pageControl){
  int startRow = pageControl.getPageStartRow();
  int endRow = pageControl.getPageEndRow();
  Iterator iterator = arrayList.iterator();
  for(int i=1;i<startRow;i++){
   iterator.next();
  }
  for(int i=startRow;i<=endRow;i++){
   ProductLocal element = (ProductLocal) iterator.next();
   ProductForm productform = new ProductForm();
   //add the info to productform
   productform.setId(element.getID().toString());
   //test whether it can add
   productform.setName(element.getName());
   productform.setRetailPrice(element.getRetailPrice().toString());
   productform.setWholeSalePrice(element.getWholeSalePrice().toString());
   productform.setQuantity(element.getQuantity().toString());
   productform.setDescription(element.getDescription());
   productform.setDiscountPrice(element.getDiscountPrice().toString());
   //add it to the list
   array.add(productform);
  }
 }
 /**
  * perform the main function here
  */
 public ActionForward perform(ActionMapping mapping,
   ActionForm form,
   HttpServletRequest request,
   HttpServletResponse response)
  throws IOException,ServletException{
  //At first I get the session
  HttpSession session = request.getSession();
  PageControl pageControl = (PageControl) session.getAttribute("pageControl");
  //get the username and password from the session.
     //if the IE has been restarted,return to the first index page
     String userName = (String) session.getAttribute("userName");
  String passWord = (String) session.getAttribute("passWord");
  //Validate here
  /*if(userName == null || passWord == null)
  {
   return (mapping.findForward("Logon"));
  }*/
  /*else if(!userName.equals("Admin") || !userName.equals("Customer"))
  {
   return (mapping.findForward("Logon"));
  }
  */
  
  //get the accessManagerHome initialized
  initAccessManager();
   //reset your array first
   array = new ArrayList();
   try {
    accessManagerHome.create().calculateDiscount((float)0.75);
   } catch (RemoteException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   } catch (CreateException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
   try {
    productList = accessManagerHome.create().getAllRecords();
   } catch (RemoteException e1) {
    // TODO Auto-generated catch block
    e1.printStackTrace();
   } catch (CreateException e1) {
    // TODO Auto-generated catch block
    e1.printStackTrace();
   }
   //get the pages information from request
   String pageInfo = request.getParameter("pageInfo");
   //if null create the new PageControl
   if(pageInfo == null){
    pageControl = new PageControl(productList.size());
    session.setAttribute("pageControl",pageControl);
   }
   else if(pageInfo.equals("next")){
    pageControl.setCurrentPage(pageControl.getNextPage());
   }
   else if(pageInfo.equals("previous")){
    pageControl.setCurrentPage(pageControl.getPreviousPage());
   }
   //transfer the productlist to the array
   //in array the element in "ProductForm"
   setArrayList(productList,pageControl);
     //add the PageForm info
   PageForm pageForm = new PageForm();
   String hasNext = null;
   if(pageControl.hasNext){
    hasNext = "yes";
   }
   else{
    hasNext = "no";
   }
   String hasPrevious = null;
   if(pageControl.hasPrevious){
    hasPrevious = "yes";
   }
   else{
    hasPrevious = "no";
   }
  pageForm.setHasNext(hasNext);
  pageForm.setHasPrevious(hasPrevious);
     //add it to the session
  request.setAttribute("array",array);
  session.setAttribute("PageForm",pageForm);
  
  
  //redirect to ProductList.jsp with the same request(I will verify later)
  return mapping.findForward("ProductList");
  }
}