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;
}
}