Re: Variables and parameters

/ Alessandro Vernet <avernet@orbeon.com> was heard to say:
| I apologize if I am the source of a confusion here. My understanding
| of Jeni's proposal is that we would use <p:with-param> to pass
| parameters:
|
|    <p:step name="my:subPipe">
|        <p:with-param name="foo" select="'someValue'"/>
|        <p:input name="document" ref="xiout"/>
|        <p:output name="result" label="pipeOut"/>
|    </p:step>
|
| And we would use <p:param> to declare a parameter that is passed to us:
|
|    <p:pipeline>
|        <p:param name="foo"/>

That's kindof what I thought too, but unless there's more to it, I
think it's more confusing.

p:pipeline elements have to declare their inputs and outputs as well
as their parameters, so I think we either need:

  <p:pipeline name="mySubsteps">
    <p:param .../>
    <p:input .../>
    <p:output .../>
  </p:pipeline>

and

  <p:step name="mySubsteps">
    <p:with-param .../>
    <p:with-input .../>
    <p:with-output .../>
  </p:step>

or we need to just use p:parameter, p:input, and p:output in both
places and accept the contextual differences.

Having p:param and p:with-param but using p:input and p:output in both
places just seems confusing.

But maybe that's because I'm not seeing the whole thing.

                                        Be seeing you,
                                          norm

-- 
Norman Walsh
XML Standards Architect
Sun Microsystems, Inc.