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https://issues.apache.org/jira/browse/FELIX-4860?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14521704#comment-14521704
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Thomas Baier commented on FELIX-4860:
-------------------------------------
There are the following requirements the HandlerRegistry currently provides:
h4. Lookup
* Servlets
** by path/url: first in the servlet context with longest matching path, then
in other servlet contexts in the order of their ranking, take wildcards into
account
** by servlet context id + name
* Error pages - are bound to a servlet context
** by context id + exception/error code: only highest ranking page
** by servlet context path (only 404?)
* Filters - are bound to a servlet context
** by context id + path
** by context id + regex
** by context id + servlet name
** filters can be registered with multiple of the above, list of all matches
ordered by ranking
h4. Registration
h5. Addition:
* Servlets
** by ServletHandler, servlets can be shadowed across servlet contexts
* Error pages
** by ServletHandler, error pages can be shadowed within a servlet context
* Filters
** by FilterHandler
h5. Removal
* Servlets
** by ServletInfo
** by servlet
* Error pages
** by ServletInfo
* Filters
** by FilterInfo
** by Filter
Servlets need to be initialized/destroyed when they are shadowed/activated
Shadowed servlets need to appear as failure DTOs
> Revisit HandlerRegistry implementation
> --------------------------------------
>
> Key: FELIX-4860
> URL: https://issues.apache.org/jira/browse/FELIX-4860
> Project: Felix
> Issue Type: Sub-task
> Components: HTTP Service
> Reporter: Thomas Baier
> Fix For: http.base-3.0.0
>
>
> The implementation of the HandlerRegistry class needs to be revisited.
> There is quite some code duplication between the code for the servlet handler
> registrations and error pages/filter registrations. Also it might be worth
> checking if the current division into a servlet handler registry and a per
> context registry is the best solution, also with FELIX-4779 in mind.
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