Hi,

> No specification that there are restricted names on the inputs or
> outputs. In fact, how would the <p:param type="output" name="bar"/>
> in the example be referenced; not by:
>
> <p:output name="data" ref="bar"/>

Yes. The "name" attribute specifies an output of the processor. The
"ref" attribute specifies the name of the output of the pipeline to
connect to.

> but by:
>
> <p:output name="bar" ref="bar"/>

Only if your processor has an output named "bar".

> so the ref attribute is not really a connector mapping an output
> from a processor to the output of pipeline as I had thought it was?

Yes it is :-)

OK, so my example pipeline is:

<p:config>
 <p:param type="input" name="instance"/>
  <p:param type="output" name="outcome"/>

  <p:processor name="oxf:identity">
    <p:input name="data" href="#instance"/>
    <p:output name="data" ref="outcome"/>
  </p:processor>
</p:config>

but when I try this, it does not work - I get no output from the pipeline. To get output from the pipeline I have to call the pipeline output data and change the processor output ref to data.

        Cheers,

        Matthew



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