JSF permanent redirect using a bean on a preRenderView event - jsf

Question

Is there a way to permanently redirect to a page on preRenderEvent view using faces-config navigation?
For example, after login it will redirect on a page and on that page I need to know the role of a user so that I can redirect him to the correct page.
I'm using this to redirect:
<f:metadata>
<f:event listener="#{loginRedirectBean.redirect}" type="preRenderView"></f:event>
</f:metadata>
public void redirect() throws IOException {
if (identity.isLoggedIn()) {
if(hasRole("admin")) {
ExternalContext context = FacesContext.getCurrentInstance().getExternalContext();
context.redirect("faces.admin");
}
}
}

Answer 1

You should so make use of "if else" statements based on the user role :
public void redirect(){
ExternalContext context = FacesContext.getCurrentInstance().getExternalContext();
if (context.isUserInRole("admin"){
context.redirect("adminpage");
}
else if (context.isUserInRole("user"){
context.redirect("userpage");
}
// other possible roles
else context.redirect("homepage");
}
Unrelated : In order to avoid firing double requests to the server whenever a user is logging in, I suggest to transfer that logic to be implemented within the method redirect(), to the method responsible of user logging with "if else" statements and with a String returning outcome (without the need to redirect manually as above) to specify the right page name to redirct to depending on the user role in "if" instruction.

Answer 2

Since faces-config navigation. I've just used a file given a role.
public void redirect() throws IOException {
String redirectUrl = "login.jsf";
if (identity.isLoggedIn()) {
try {
User user = ((PicketlinkUser) identity.getAccount()).getUser();
if (user.hasRole(Role.ROLE_ADMIN)) {
redirectUrl = "pages/secured/" + Role.ROLE_ADMIN + "/index.jsf";
} else if (user.hasRole(Role.ROLE_BRIDE)) {
redirectUrl = "pages/secured/" + Role.ROLE_BRIDE + "/index.jsf";
} else if (user.hasRole(Role.ROLE_VENDOR)) {
redirectUrl = "pages/secured/" + Role.ROLE_VENDOR + "/index.jsf";
} else if (user.hasRole(Role.ROLE_COLLABORATOR)) {
redirectUrl = "pages/secured/" + Role.ROLE_COLLABORATOR + "/index.jsf";
} else {
log.info("user={} has no valid role?", user);
redirectUrl = "index.jsf";
}
} catch (NullPointerException e) {
log.error("no role?={}", e.getMessage());
}
} else {
log.error("isNotLoggedIn, redirect to login.");
}
ExternalContext context = FacesContext.getCurrentInstance().getExternalContext();
context.redirect(redirectUrl);
}