Can we also add a Filter to replace a regex with some value in the
output? I've found myself having to write that a couple of times. I
can help contribute to this effort.
Max
On May 25, 2005, at 9:25 AM, Frank W. Zammetti wrote:
Proposal for Commons Filters Package (hope I did this right!)
Rationale
---------
I frequently see questions asked on the Struts Users and Tomcat Users
lists that result in the answer "write a servlet filter for it".
There
are many functions which it would be nice to have available in a
filter in
a flexible, independant way, things that can be reused across many
projects without being tied to a particular framework or server.
With this in mind, I propose a new Commons Filters package.
Alternatively, this could be a new component under the Commons
Servlets
package, but that package would need to move in to the sandbox I
believe.
I am open to either approach, although I prefer the first.
Scope of the package
--------------------
Any function which can be used independant of a given framework or app
server might be eligible. By way of example, the following are some
filters I have written and which might make good candidates:
* CacheControlFilter - This allows for control of setting cache
headers,
similar to the Struts RequestProcessor's cachecontrol setting, but
in a
more fine-grained manner.
* AppAvailabilityFilter - This allows a developer to determine if an
application is available to users based on a defined "availability
window".
* InvalidUserRedirectFilter - This allows for redirection to a defined
page when a particular attribute is not found in session.
Interaction with other packages
-------------------------------
Commons Logging would be used for all logging functionality, and
Commons
Digester would be used for any configuration file parsing that a
filter
might require.
I would be willing to provide at least a few initial filters to get
the
codebase going. I am reasonably sure others will contribute their
work
quickly.
Identify the base name for the package
--------------------------------------
org.apache.commons.filters
Perhaps org.apache.commons.servletfilters might be more
appropriate, or if
put under the Servlets package then org.apache.commons.servlet.filters
would be the name.
Identify the coding conventions for this package
------------------------------------------------
The code would use the Sun Standard coding conventions (mostly!).
Identify any Jakarta-Commons resources to be created
----------------------------------------------------
* Mailing list - Commons dev/user lists would be used, I do not
envision
this ever requiring its own list. Besides, I agree with the
concept that
all Commons projects should probably use the same two lists to achieve
maximum benefit of a "Commons" project philosophy.
* CVS repository - Probably a root branch of the Jakarta-Commons
CVS? I
leave this to those that know more than me to decide!
* Bugzilla - The package should be listed as a component of under the
Jakarta-Commons Bugzilla entry.
Identify the initial set of committers to be listed in the Status File
----------------------------------------------------------------------
Frank W. Zammetti, although I'm not sure I *can* be listed because
I have
no present involvement under Apache officially and I don't know
what the
rules/requirements are, so again I leave this to those that know
more than
me to decide... as long as I am involved in some fashion I'm OK
with it.
--
Frank W. Zammetti
Founder and Chief Software Architect
Omnytex Technologies
http://www.omnytex.com
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