changing spring security logout-success-url programmatically

Question

I need to redirect the user to 2 different logout urls based on his role. How do i go about doing this?

i am using spring security 2.0 and my xml looks something like this:

    <s:http access-denied-page="/" >
        <s:intercept-url pattern="/pages/SplashPage.jsf" access="IS_AUTHENTICATED_ANONYMOUSLY"/>
        <s:intercept-url pattern="/pages/Home.jsf" access="ROLE_USER,ROLE_MERCHANT"/>

        <s:anonymous/>
        <s:form-login
            login-page="/"
            login-processing-url="/j_spring_security_check"
            default-target-url="/pages/Home.jsf"
            authentication-failure-url="/" always-use-default-target='false' />
        <s:logout invalidate-session="true" logout-url="/pages/logout.jsf" logout-success-url="/" />
        <s:concurrent-session-control max-sessions="1" exception-if-maximum-exceeded="false"/>
    </s:http>

Answer 1

I couldnt find any right way to do this, so i ended up with a hack:

1. dont invalidate-session
2. change the logout-success-url to special redirect controller
3. in that controller, pull the user session to tell the user type
4. invalidate the session
5. redirect to proper url for the usertype