[newbie] UrlExistsSelector

[Martin Kalén <ma...@curalia.se>]

Greetings developers,

  as a newbie to the wonderful world of Cocoon sitemaps I was struggling 
with the problem of using a selector to determine if an external HTTP 
URL was available.


* Problem description:

A pipeline matcher with the following steps is triggered:
1. XSP generation
2. cinclude transformation
3. XSLT transformation
4. HTML serialization

The cinclude in step 2 triggers another cocoon pipeline. XSP snippet:
<ci:include src="cocoon:/(name of pipeline #2)" 
xmlns:ci="http://apache.org/cocoon/include/1.0"/>

Pipeline #2:
1. (what I wanted) map:select and generation based on status of external 
HTTP URL
2. XSLT transformation
3. XML serialization


* My soloution:

I was first trying the map:select with the 
org.apache.cocoon.selection.ResourceExistsSelector until I found out 
that this was only for content within the current servlet context.

I then wrote the attached (trivial) UrlExistsSelector and used this one 
for step 1 in pipeline #2.

This works, but might have som implications in security/performance (no 
timeout handling) etc. etc. that I just don't see because I'm new to Cocoon.


Any comments? Other soloutions?
TIA,
  Martin

-- 
Martin Kalén
Curalia AB              Web:  http://www.curalia.se
Orrspelsvägen 2B        Mail: info@curalia.se
SE-182 79  Stocksund    Tel:  +46-8-410 064 40

Re: [newbie] UrlExistsSelector

[Martin Kalén <ma...@curalia.se>]

Greetings,
  I was under the impression that the selectors included in the standard 
Cocoon distro was somewhat dev-related, but after reading up a bit on 
the lists I guess this is 100% users@cocoon material. Sorry for the 
incorrect post, I'd be happy if someone could give me some feeback there 
instead.

-- 
Martin Kalén
Curalia AB              Web:  http://www.curalia.se
Orrspelsvägen 2B        Mail: info@curalia.se
SE-182 79  Stocksund    Tel:  +46-8-410 064 40