In the docs and examples for the request-parameter selector,
the selection tests are done on the value of a particular request- parameter

<map:select type="request-parameter">
  <map:parameter name="parameter-name" value="command"/>
  <map:when test="list">
  ....
  </map:when>
  <map:when test="create">
  ...
  </map:when>
  ...
  <map:otherwise>
  ...
  </map:otherwise>
</map:select>


But what I want to do is select different processing
depending on the presence of a request parameter:
 if no parameter exists, then process document normally;
 if parameter exists, do something with that parameter.

What is the best way to do that?

Will  <map:when test="">  work when there's no parameter
as well as a null parameter ?
( Then I could have normal document processing under
  that test and  parameter processing under <map:otherwise>


Is there any way to select in the sitemap based on the
presence of ANY request parameters ?

I tried adding  "*.*?**" as a pattern before my "*.*" pattern
but this didn't seem to work.

-- Steve Majewski





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