At 6:48 AM -0400 4/18/05, Néstor Boscán wrote:
Hi
When I create a struts-config.xml that has many nodes that call the same
action class, is the action class instantietad once, or is instantiated for
every node?. What happens if I have a custom action mapping class, is
instantiated once or is instantiated for every node?.
Freddy pretty much answered you, but yes, by
Struts original design, Action and ActionMapping
classes are created once at Servlet
initialization and are reused throughout.
Note that if you use the wildcard action-mapping
functionality added in Struts 1.2, then
necessarily a new ActionMapping is created for
each request, because part of the functionality
is to populate values of the mapping based on the
details of the match. (see
http://struts.apache.org/userGuide/building_controller.html#action_mapping_wildcards)
Several other MVC frameworks instantiate a
controller (equivalent to a Struts Action) for
each request, and in fact, the Spring Framework
provides (among other ways) a way of integrating
with Struts which results in a new Action class
being created for each request (see
http://www.springframework.org/docs/reference/webintegration.html#struts)
If you didn't want to use Spring, it would still
be relatively easy to extend the Struts
RequestProcessor (or in Struts 1.3, extend or
replace the CreateAction command) so that an
Action was created for each request.
Joe
--
Joe Germuska
[EMAIL PROTECTED]
http://blog.germuska.com
Narrow minds are weapons made for mass destruction -The Ex
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