CODEWITHSUNDEEP
jsfjsf-2managed-bean
Eslam Hamdy
Eslam Hamdy

Reputation: 7386

How to initialize variables in a session scoped bean

I have two booleans that controls the render of some components, the problem is that the variables saves there last state until the session expires, i

<f:facet name="footer">
  <p:commandButton action="#{personBean.report}" ajax="false" value="Publish"
                            rendered="#{personBean.reportMode}" icon="ui-icon-check" />
  <p:commandButton action="#{personBean.saveEditing}" ajax="false" value="Save"
                            rendered="#{personBean.editMode}" icon="ui-icon-check" />
</f:facet>

the bean is session scoped and has the following attributes:

@ManagedBean(name = "personBean")
@SessionScoped
public class ReportPerson {
private boolean editMode;
private boolean reportMode;

}

the bean contains these method that changes the values of the booleans:

public String editPerson() {
    System.err.println("Edit Missing Person");
    editMode = true;
    reportMode = false;
    return "ReportNewPerson";
}

the problem is that these values remains until the session expires and as a result the components renders incorrectly

Upvotes: 0

Views: 4088

Answers (1)

Freak
Freak

Reputation: 6873

If you are using a session scoped bean then you should Initialize them in constructor like

public ReportPerson(){
//let say you want to show report mode by default
editMode = false;
reportMode = true;
}

after then , create two methods like 

public void inEditMode(){
           editMode = true;
           reportMode = false;
}

public void inReportMode(){
           editMode = false;
           reportMode = true;
}


Now call #{reportPerson.editMode} and #{reportPerson.reportMode} on your rendering cpomponent and call these methods inReportMode() and inEditMode by getting bean from sessionmap in your backing bean.You may get bean from sessionmap like this

ReportPerson rp = FacesContext.getCurrentInstance().getExternalContext().getSessionMap().get("reportPerson");

From this , you can get current bean and from this you can invoke

rp.inEditMode();


As by using session scope , you have to change them by your logic because they will keep their state remain during the whole session.

Upvotes: 1

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