Allways can't get he project value, bother me for 2 days

[chicochen]

pages.xml

<navigation from-action="#{projectMaintAction.add}">
 <render view-id="/backend/project/projectAdd.xhtml" />
 </navigation>

<page view-id="/projectAdd.xhtml"
 conversation-required="true">
 <navigation from-action="#{projectMaintAction.save}">
 <render view-id="/projectQuery.xhtml" />
 </navigation>
 </page>

projectQuery.xhtml

<h:commandLink id="addProject" value="Add Project" action="#{projectMaintAction.add}" propagation="true"/>

ProjectMaintActionImpl.Add()

@Stateful
@Name("projectMaintAction")
@Scope(ScopeType.CONVERSATION)
@Restrict("#{identity.loggedIn}")
public class ProjectMaintActionImpl implements ProjectMaintAction {
 @Begin
 public void add() {
 isCreation = true;
 project = new Project();
 }
}

projectAdd.xhtml

 <h:form>
 <h:inputText id="projectName"
 value="#{project.name}" />
<h:commandButton type="reset" action="#" value="Reset" />
 </h:form>

public void save() {
 if (isCreation == true){
 String aa = project.getName();
 projectMaintService.save(project);
 }
 }

String aa = project.getName() return null, why?

[pmuir]

I don't see you make project available as a Seam context variable anywhere.

[chicochen]

thanks for your feedback!
my actionbean:

@Stateful
@Name("projectMaintAction")
@Scope(ScopeType.CONVERSATION)
@Restrict("#{identity.loggedIn}")
public class ProjectMaintActionImpl implements ProjectMaintAction {

 @In(required = false) @Out
 private Project project;

 //@In(value="projectMaintService", create=true)
 //public ProjectMaintService projectMaintService;
 @In
 private EntityManager entityManager;

 @In
 private FacesMessages facesMessages;

 @Logger
 private Log log;

 private boolean isCreation = false;

 public boolean isCreation() {
 return isCreation;
 }
 @Begin
 public void createProject() {
 isCreation = true;
 project = new Project();
 }
 @End
 public void saveProject() {
 if (isCreation == true){
 String aa = project.getName();
 entityManager.persist(project);
 }
 }


 @Destroy @Remove
 public void destroy() {
 }
 public void delete() {
 // TODO Auto-generated method stub

 }
 public void editProject() {
 // TODO Auto-generated method stub

 }
 public void updateProject() {
 // TODO Auto-generated method stub

 }
 public void viewProject() {
 // TODO Auto-generated method stub

 }

}

[chicochen]

it's ok now, my code come from different doc, it's my mistake.