#1 Requests stack

[Plamen Tanov]

Handled request should be stored in stack. This will help in navigation throught pages. Size of stack should be configured (MAX_HISTORY).
Every request should have additional methods and fields to support stack:
String goBack() if previous request (parent request) is available return its outcome, else forward to home.
Request previousRequest - previous request (parent request) if available or null
String outcome - outcome to navigate to this request (used by goBack())
void setPreviousRequest(Request) - setter for previousRequest, in addition removes from stack items that are more than MAX_HISTORY

[Plamen Tanov]

Method:
String getLabel() should be added to interface. It will return user friendly representation of navigation item and will be used in navigation line.

[Plamen Tanov]

Other case is to save stack centralized, not distributed - one object that manages sequence of requests (each request does not know about others, no setPreviousRequest()).
Should be discussed which one possibility to chose.