hi all,
i have written a small Seam application that resembles a shopping cart. I
have a EcontrolSession bean, and two entity beans, Expense and Items.
I am adding items to the expense bean and then i plan to persist the expense
via the SessionBean
My question is:
- my Session bean is stateful and has a session scope
- my Expense entity will be a global variable in the EControlSession bean,
because it lasts for the lifespan of user session
- My Item will have a request scope because user enters items at every request.
My thought was that . this would have worked
| @Stateful
| @Local ( {EControlSession.class})
| @Name("econtrol")
|
|
| @Scope(SESSION)
|
|
|
| public class EControlSessionBean
| implements EControlSession, java.io.Serializable
| {
|
|
| private Expense expense = new Expense();
|
| @In(create=true)
| private Item item = new Item();
|
| @PersistenceContext
| EntityManager em;
|
|
|
| int counter = 0;
|
|
|
| /**
| * Add an user (Admin only should access this)
| */
| public void addExpense (Expense expense) {
| System.err.println("Persisting expense");
| em.persist(expense);
| System.err.println("Expense persisted..");
| }
|
| public Expense getExpense() {
| return expense;
| }
|
|
| public Item getItem() {
| return item;
| }
|
| public String add() {
|
| item.setName("test" + 1);
| item.setPrice(1);
|
|
| expense.addItem(item);
|
| return "success";
| }
| ...
|
and here's my page
| <ui:composition xmlns="http://www.w3.org/1999/xhtml";
| xmlns:ui="http://java.sun.com/jsf/facelets";
| xmlns:h="http://java.sun.com/jsf/html";
| xmlns:f="http://java.sun.com/jsf/core";
| xmlns:s="http://jboss.com/products/seam/taglib";
| template="template.xhtml">
| <ui:define name="body">
|
| <h2> Adding Product</h2>
| <h:messages/>
|
| <f:view>
| <h:form id="foobrrewwe">
| <table>
| <tr>
| <td>Site:<h:outputText
value="#{econtrol.expense.site}"/></td>
| <td>Date:<h:outputText
value="#{econtrol.expense.date}"/></td>
| </tr>
| </table>
| <table>
| <tr>
| <td>Product Name</td>
| <td><h:inputText value="#{econtrol.item.name}"/></td>
|
| </tr>
|
| <tr>
| <td>Price</td>
| <td><h:inputText value="#{econtrol.item.price}">
| <f:converter converterId="javax.faces.Double"/>
| </h:inputText>
| </td>
| </tr>
|
| </table>
|
| <h:commandButton action="#{econtrol.add}" value="Add Item"
| class="formButton" style="width:
166px;" />
| <h:commandButton action="#{econtrol.stop}" value="Finish"
| class="formButton" style="width:
166px;" />
|
| </h:form>
| </f:view>
|
| <h4><a href="register.seam">Back To Index</a></h4>
| </ui:define>
|
| </ui:composition>
|
my assumption was because i thought that @In somehow resolved to a getter and
setters, so that the Item object can be populated using
<h:inputText value="#{econtrol.item.price}/>
as i have found out, it does not work that way...
is the only way out for me to declare two @request variable and populate each
item with those requet variables?
thanks and regards
marco
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