Hello,
Since struts2 actions are not shared amongst requests and if these
actions are Aware of one of the scopes they essentially have a copy
of that scope's parameters in a map. Lets say the application has
about 15 attributes and the session has about 7 attributes.
Que1. When you add a new application attribute, does it automatically
get added to all the present maps of that particular scope in all the
instances of a particular action that are ApplicationAware?
Que2. What are the performance implications of having such a map on
each application instance that requires access to a particular
application scoped attribute and not all?
Que3. If an action needs just one application attribute, is it better
to have an interceptor extract that from the application scope and
set it on the action?
Que4. Is it better to implement the "Awareness" of one or more of the
scope in an interceptor ? (Since interceptor instances are shared
across requests) If yes, would this map of attributes from the
particular scope get updated when a new attribute is added to that
particular scope?
Thanks.
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