[jboss-user] [JBoss Seam] - pageflow definition and start-state
Hi, I have not found anywhere in the documentation, how to handle the start-state
correctly in CRUD operations:
The situation is, that I have non conversational list of items. I select one of the listed
items to display the detail of it (car.xhtml). On the detail
the user can select "Edit", what switches him/her to the carEdit.xhtml page.
This works fine with the car to edit. What I need is
to use the same page for creating the new car instances. I need to hook the same pageflow
dirrectly from the carList.xhtml
I know, that it is possible to have more transitions in the <start-state> element,
like I already have, but I don't
know, how to tell the pageflow to use the name="create" one (suppose, that if
not specified otherwise, the one without the name is used)
So the question is: how to tell the pageflow to use the transition name="create"
to="editCar"
Here is the code, which works fine with the car to edit:
carList.xhtml - link to display the detail of the car
| <s:button view="/car/car.xhtml" value="Select"
id="selectCarButton">
| <f:param name="carId" value="#{car.id}" />
| </s:button>
|
car/car.page.xml
the carHome.start actualy starts the new conversation with the pageflow
"editcar"
| <page action="#{carHome.start}">
| <param name="carId" value="#{carHome.carId}" />
| </page>
|
editcar pagefrow .jpdl.xml file
| <pageflow-definition xmlns="http://jboss.com/products/seam/pageflow"
| xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
| xsi:schemaLocation="http://jboss.com/products/seam/pageflow
http://jboss.com/products/seam/pageflow-1.2.xsd"
| name="editcar">
|
| <start-state name="start">
| <transition name="create" to="editCar" />
| <transition to="selectCar" />
| </start-state>
|
| <page name="selectCar" view-id="/car/car.xhtml">
| <transition name="edit" to="editCar" />
| <transition name="done" to="doneCar" />
| </page>
|
| <page name="editCar" view-id="/car/carEdit.xhtml"
no-conversation-view-id="/car/carList.xhtml">
| <redirect />
| <transition name="cancel" to="selectCar" />
| <transition name="save" to="saveCar" />
| <transition name="remove" to="doneCar">
| <action expression="#{carHome.remove}" />
| </transition>
| </page>
|
| <decision name="saveCar" expression="#{carHome.managed}">
| <transition name="true" to="selectCar">
| <action expression="#{carHome.update}" />
| </transition>
| <transition name="false" to="selectCar">
| <action expression="#{carHome.persist}" />
| </transition>
| </decision>
|
| <page name="doneCar" view-id="/car/carList.xhtml">
| <redirect />
| <end-conversation />
| </page>
|
| </pageflow-definition>
|
The component carHome
| package cz.timony.carConsumption.ejb.session.car;
|
| import org.jboss.seam.annotations.Begin;
| import org.jboss.seam.annotations.In;
| import org.jboss.seam.annotations.Name;
| import org.jboss.seam.annotations.RequestParameter;
| import org.jboss.seam.annotations.security.Restrict;
| import org.jboss.seam.framework.EntityHome;
|
| import cz.timony.carConsumption.ejb.model.Car;
| import cz.timony.carConsumption.ejb.model.User;
|
| @Name("carHome")
| @Restrict("#{identity.loggedIn}")
| public class CarHome extends EntityHome<Car> {
|
| @RequestParameter
| Integer carId;
|
| private static final long serialVersionUID = 1712476447498905090L;
|
| @In(value = "currentUser")
| User currentUser;
|
| public Car getInstance() {
| return super.getInstance();
| }
|
| @Begin(join = true, pageflow="editcar")
| public void start() {
| wire();
| }
|
| public void setCarId(Integer id) {
| setId(id);
| }
|
| public Integer getCarId() {
| return (Integer) getId();
| }
|
| @Override
| protected Car createInstance() {
| Car car = new Car();
| return car;
| }
|
| public void wire() {
| if (getInstance().getUser() == null && currentUser != null) {
| getInstance().setUser(currentUser);
| }
| }
|
| public boolean isWired() {
| if (getInstance().getUser() == null)
| return false;
| return true;
| }
|
| public Car getDefinedInstance() {
| return isIdDefined() ? getInstance() : null;
| }
| }
|
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