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Re: p:store and default readable ports

From: Alex Muir <alex.g.muir@gmail.com>
Date: Thu, 25 Nov 2010 12:46:48 +0000
Message-ID: <AANLkTi=2kA+gS3r2K+9x7YrAqSehWwUE4wWkpMHEGSpB@mail.gmail.com>
To: Philip Fennell <Philip.Fennell@marklogic.com>
Cc: Tony Rogers <tony@gonk.net>, XProc Dev <xproc-dev@w3.org>
I asked this question a while back and based on response from James Sulak

http://markmail.org/search/?q=list%3Axproc-dev+p%3Astore#query:list%3Axproc-dev%20p%3Astore%20from%3A%22Alex%20Muir%22+page:2+mid:ictw4wbiqi5k2bte+state:results

I use the following:

The code uses a declared step which handles the identity and then accepts a
boolean to determine if the output should be written using the passed href
parameter as the file name.

 <p:declare-step name="saveDocument" type="mh:save-output">
    <p:input port="source" primary="true"/>
    <p:output port="result">
      <p:pipe port="result" step="ident"/>
    </p:output>
    <p:option name="step-name" required="true"/>
    <p:option name="save" select="'false'"/>
    <p:option name="href" required="true"/>
    <p:identity name="ident"/>

    <p:choose>
      <p:when test="$save = 'true'">
        <p:store>
          <p:with-option name="href" select="$href">
            <p:pipe port="result" step="ident"/>
          </p:with-option>
        </p:store>
      </p:when>
      <p:otherwise>
        <p:sink/>
      </p:otherwise>
    </p:choose>
  </p:declare-step>

And use it in the code.

         <mh:save-output step-name="debug1">
            <p:with-option name="save" select="~~~debug~~~"/>
            <p:with-option name="href"
              select="concat($debug-output-
folder,'debug-1.xml')"/>
          </mh:save-output>

replace the ~~~debug~~~ with true() or false()

Alex

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On Wed, Nov 24, 2010 at 4:41 PM, Philip Fennell <
Philip.Fennell@marklogic.com> wrote:

>  Tony,
>
>
>
> As I myself found out recently, the p:store step doesn’t have a primary
> output port so that you don’t have to explicitly bind the following step to
> it. Your subsequent step can use a p:pipe on its input source to bind it to
> the result of the step before the p:store.
>
>
>
> ...
>
> <p:http-request name=”request”/>
>
> <p:store href=”foo.xml”/>
>
> <p:xslt>
>
>   <p:input port=”source”>
>
>     <p:pipe port=”result” step=”request”/>
>
>   </p:input>
>
>   ...
>
> </p:xslt>
>
> ...
>
>
>
> Something like that.
>
>
>
> Regards
>
>
>
> Philip
>
>
>
> *From:* xproc-dev-request@w3.org [mailto:xproc-dev-request@w3.org] *On
> Behalf Of *Tony Rogers
> *Sent:* 24 November, 2010 4:17 PM
> *To:* XProc Dev
> *Subject:* p:store and default readable ports
>
>
>
> I know that the p:store step does not have a primary output.
>
>
>
> *My general question:*
>
>             Does this mean that in a pipeline that flows in the default
> order (top to bottom of pipeline document), p:store cannot be used in the
> middle of things?
>
>
>
> *My pipeline specifics:*
>
>             I have a pipeline that does an HTTP request.  I want to store
> the results of that request, AND I also want to perform some further
> processing on those results immediately after storing them.
>
>             The problem is that if I store them, p:store does not have a
> primary output, so the automatic flow of my pipeline stops.  :(
>
>
>
>
>
> —Tony
>
Received on Thursday, 25 November 2010 12:47:23 GMT

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