struts2 global result not redirecting to action - struts2

Question

I have a custom interceptor (TransferInterceptor) that checks for a function change within my application. When it changes, the interceptor returns a post-processing string (the result) containing the global results name of the action that I want to redirect to. I have the results defined in the global results of my struts.xml file, but they do not redirect to the specified action. I have a 'Login' global result that works fine, but it is being called from a JSP with:
<s:a action="Login.action">Login</s:a>
The struts.xml file:
<package name="default" extends="struts-default" namespace="/">
<interceptors>
<interceptor name="AuthenticationInterceptor" class="com.purchasing.utils.AuthenticationInterceptor" />
<interceptor name="TransferInterceptor" class="com.purchasing.utils.TransferInterceptor" />
<interceptor-stack name="secureStack">
<interceptor-ref name="TransferInterceptor" />
<interceptor-ref name="AuthenticationInterceptor" />
<interceptor-ref name="defaultStack" />
</interceptor-stack>
</interceptors>
<default-interceptor-ref name="secureStack" />
<global-results>
<result name="Login">login.jsp</result>
<result name="RESULTA" type="redirect">ACTIONA</result>
<result name="RESULTB" type="redirect">ACTIONB</result>
</global-results>
<action name="Login" class="com.purchasing.actions.Login">
<interceptor-ref name="defaultStack"></interceptor-ref>
<result name="success">welcome.jsp</result>
<result name="error">login.jsp</result>
<result name="input">login.jsp</result>
</action>
<action name="ACTIONA" class="com.purchasing.actions.ACTIONA">
<result name="success">ACTIONA.jsp</result>
<result name="error">ACTIONA.jsp</result>
<result name="input">ACTIONA.jsp</result>
</action>
<action name="ACTIONB" class="com.purchasing.actions.ACTIONB">
<result name="success">ACTIONB.jsp</result>
<result name="error">ACTIONB.jsp</result>
<result name="input">ACTIONB.jsp</result>
</action>
</package>
The TransferInterceptor:
public String intercept(ActionInvocation ai) throws Exception
{
String result = ai.invoke();
session = ai.getInvocationContext().getSession();
fl = (FunctionLine) session.get(Constants.FUNCTION_LINE);
function = fl.getFl_function();
last_function = (Integer) session.get(Constants.LAST_FUNCTION);
if (function != last_function) {
session.put(Constants.LAST_FUNCTION, new Integer(function));
switch (function) {
case 61: return "RESULTA";
case 62: return "RESULTB";
}
return "error";
}
else {
return result;
}
}
Any help would be greatly appreciated!

Answer 1

As per #Lukasz comment :
If you want to redirect to an action use redirectAction result type instead of redirect which is used to redirect to static resources
It still won't work, because the ACTIONB & ACTIONA never executes since they go through the same interceptor stack, which returned redirectAction result & hence, it's kinda stuck in an infinite loop.