Hi!
I've an application similar to the booking-example.
You can select an item from a list and go to a page to edit this item.
I have a stateful bean, from which the list is populated via @DataModel. I get
back a @DatamodelSelction, which is a simple Bean, no Seam Component. In my
JSP, I call an action method in another bean, which requests an EntityBean from
the Database. I want to outject this row, but always get an
org.jboss.seam.RequiredException: Out attribute requires value for component:
walzeedit.walze
Here is my code:
Entity Bean:
| @Entity
| @Name("walze")
| @Table(name="WALZEN"
| , uniqueConstraints = { }
| )
|
| public class Walzen implements java.io.Serializable {
|
| .
| .
| .
|
List:
| @Name("walzenuebersicht")
| @Stateful
| @Scope(ScopeType.SESSION)
| @LoggedIn
|
| public class WalzenUebersichtBean
| implements WalzenUebersicht {
|
| private String hydronummer = null;
| private String gruppe = null;
|
| @In (create=true)
| private EntityManager walzenDatabase;
|
| @DataModel
| private List<WalzenElement> walzenliste;
|
| @DataModelSelection
| WalzenElement selectedWalze;
|
| @Out(scope=ScopeType.CONVERSATION,required=false)
| Map<WalzenElement, Boolean> walzenSelection;
|
| @Factory("walzenliste")
| public void zeigeWalzen() {
|
| .
| .
| public WalzenElement getSelectedWalze() {
| return selectedWalze;
| }
| .
| .
|
|
EditBean:
| @Name("walzeedit")
| @Stateful
| @LoggedIn
|
| public class WalzeEditBean
| implements WalzeEdit{
|
| @In (create=true)
| private EntityManager walzenDatabase;
|
| @In
| private WalzenUebersicht walzenuebersicht;
|
| @Out
| private Walzen walze;
|
| .
| .
| .
|
|
| @Begin
| public String aendern(){
| WalzenElement selectedWalze =
walzenuebersicht.getSelectedWalze();
| walze = (Walzen) walzenDatabase.createQuery("SELECT w FROM
Walzen w WHERE id = :id")
| .setParameter("id", selectedWalze.getId())
| .getSingleResult();
| return "editWalze";
| }
|
|
List JSP:
| .
| .
| <t:dataTable id="walzen" var="aktwalze"
value="#{walzenliste}"
| styleClass="listtable"
headerClass="listtablehead"
| rowClasses="oddrow,evenrow">
| <t:column
styleClass="colCenter" style="width:5%;">
|
<h:selectBooleanCheckbox value="#{walzenSelection[aktwalze]}" />
| </t:column>
| <t:column
styleClass="colCenter" style="width:5%;">
| <h:commandLink
id="aendern" value="#{aktwalze.id}"
|
action="#{walzeedit.aendern}" />
| </t:column>
| <t:column styleClass="colLeft"
style="width:10%;">
| <h:outputLabel
value="#{aktwalze.hydronummer}" />
| </t:column>
| .
| .
|
Edit JSP:
| .
| .
| <table>
| <tr>
| <td style="width:
23%;"><h:outputLabel value="Walze : " /></td>
| <td style="width:
23%;"><h:outputLabel value="#{editWalze.id}" />
| </td>
| <td style="width: 4%;"></td>
| <td style="width: 24%;"></td>
| <td style="width: 24%;"></td>
| </tr>
| <tr>
| <td style="width:
24%;"><h:outputLabel value="Hydronummer" /></td>
| <td style="width:
24%;"><h:inputText
|
value="#{editWalze.hydronummer}" size="20" maxlength="20"
| id="hydroNummer" /></td>
| .
| .
|
Can anybody help me?
If I set the required-Attribute of the Out-Parameter, the error disappears, but
I can see the Outjected walze on the debugpage in a conversation-Context.
What am I doing wrong? Can anybody help me?
Thanks in advance
Stefan
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