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Posted to users@cocoon.apache.org by Erik Norvelle <er...@hotmail.com> on 2002/09/20 01:50:11 UTC
Re: Impossible or not? Combining request-parameter & wildcard matchers in 1 pipe
Barbara:
Thanks for the tip. What ended up working was using the
org.apache.cocoon.acting.RequestParamAction Action class. For the sake of
anyone reading this in the future, here's what I did.
I created an action as follows:
<map:actions>
<map:action name="request"
src="org.apache.cocoon.acting.RequestParamAction"/>
</map:actions>
I then used this new Action in my pipeline:
<map:match pattern="*/*/*.*.html*">
<map:act type="request">
<map:generate type="file"
src="http://localhost:8000/{../1}/CalendarRegistry/{../2}/EventCollection/getCataloguedEventsAsXML{requestQuery}"/>
</map:act>
<map:transform
src="http://localhost:8080/mightycal/{1}/{2}/{3}/intermediate-to-html.{4}.xsl"/>
<map:serialize/>
</map:match>
The "request" Action provided me with the {requestQuery} parameter that I
could use to append *all* of the query string to the URI for my XML source.
Note that in order to reference the original positional parameters from the
WildcardURIMatcher, I had to change {1} to {../1}, etc.
-Erik
==================================================================
Support Systems Analyst
College of Agriculture and Life Sciences
The University of Arizona
>From: "Barbara Post" <ba...@ifrance.com>
>Reply-To: cocoon-users@xml.apache.org
>To: <co...@xml.apache.org>
>Subject: Re: Impossible or not? Combining request-parameter & wildcard
>matchers in 1 pipeline
>Date: Thu, 19 Sep 2002 12:22:31 +0200
>
>Just an idea, I am busy yet : use an Action and getParameterNames() method
>if I remember well (look at the API docs), so that you have all the request
>parameters. Then you can put sitemap parameters as you want.
>
>HTH,
>
>Babs
>----- Original Message -----
>From: "Erik Norvelle" <er...@hotmail.com>
>To: <co...@xml.apache.org>
>Sent: Thursday, September 19, 2002 12:18 PM
>Subject: Impossible or not? Combining request-parameter & wildcard matchers
>in 1 pipeline
>
>
> > ************************ Problem Summary **************************
> > I cannot figure out how to use matchers to capture an arbitrary
> > number of request-parameters, in combination with using a wildcard
> > matcher to parse the structure of the request URI. I seem to be
> > limited to capturing only a single request-parameter at once, in
> > a situation when the number & names of parameters is not predictable.
> > *******************************************************************
> >
> > Here's a more complete description of my problem:
> >
> > I need to combine two kinds of matching in my sitemap, and so far
>neither
> > the documentation or sample sitemap can tell me how to accomplish it.
>There
> > are _two conditions_ that my pipeline needs to meet, and I can't figure
>out
> > how to meet them both at once:
> >
> > 1) Parsing the URI into its components, which I use to determine both
>the
> > data source (i.e. the url for the map:generate tag) and the particular
> > stylesheet that will get applied (the map:transform tag).
> > 2) Acquiring *all* of the request parameters appended to the path
>portion
>of
> > the URI, and passing these parameters on as part of the URI for the
> > map:generate tag. For example, a filtering form might specify
> > "subject=Goats", "location=Tucson" and
> > "dateStart=10-09-02&dateEnd=10-20-02".
> >
> > Here's a sample pipeline which just uses the wildcard URI matcher:
> > ----------- Code snip ----------------------
> > <map:match pattern="*/*/*.*.html*">
> > <map:generate type="file"
> >
>src="http://localhost:8000/{1}/CalendarRegistry/{2}/EventCollection/getCatal
>oguedEventsAsXML"/>
> > <map:transform
> >
>src="http://localhost:8080/mightycal/{1}/{2}/{3}/intermediate-to-html.{4}.xs
>l"/>
> > <map:serialize/>
> > </map:match>
> > ------------ End code snip -----------------
> >
> > To add one of the request parameters, I could wrap the above <map:match>
>tag
> > in another matcher, e.g.: <map:match pattern="filter"
> > type="request-parameter">. The problem with this solution is that it
>only
> > gets me *one* of the potentially five or six parameters that might be
>passed
> > as part of the request. Do I have to wrap this matcher inside a
>separate
> > matcher for each parameter, so that I end up with a matcher structure
>that
> > is 6 levels deep? That seems crazy. It also doesn't allow for
>situations
> > where only *some* of the parameters are present, and not others.
> >
> > What would work best is a matcher or other mechanism that would clump
>all
>of
> > the request parameters together in a single sstring, which I could then
> > append to the main <map:generate> component of my pipeline.
> >
> > Can this be done with the existing matchers? Do I have to use actions?
>Or
> > do I have to write my own custom matcher?
> >
> > Thanks in advance for advice.
> >
> > Erik Norvelle
> > ==================================================================
> > Support Systems Analyst
> > College of Agriculture and Life Sciences
> > The University of Arizona
> >
> >
> >
> >
> > _________________________________________________________________
> > Send and receive Hotmail on your mobile device: http://mobile.msn.com
> >
> >
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>
>
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