W3C home > Mailing lists > Public > xproc-dev@w3.org > March 2011

RE: Dynamically setting the text of an added element in a pipeline . . ?

From: <vojtech.toman@emc.com>
Date: Thu, 10 Mar 2011 03:09:56 -0500
To: <xproc-dev@w3.org>
Message-ID: <3799D0FD120AD940B731A37E36DAF3FE334C19B86B@MX20A.corp.emc.com>
You cannot use XPath in p:inline bindings. The content of p:inline is taken "as is", nothing is evaluated dynamically. You will have to use p:string-replace or p:template (see http://www.w3.org/TR/xproc-template/) to insert the iteration position in the "field" document

p:string-replace:

<p:for-each name="UploadInGroups">
  <p:string-replace name="create-field" match="field/text()">
    <p:input port="source">
      <p:inline>
        <field name="iterationCount">foo</field>
      </p:inline>
   </p:input>
    <p:with-option name="replacement" select="concat("'", p:iteration-position(), "'")"/>
  </p:template>
  <p:insert position="last-child" match="/add/doc" name="insertCounter">
      <p:input port="source">
        <p:pipe step=" UploadInGroups" port="current"/>
      </p:input>
      <p:input port="insertion">
        <p:pipe step="create-field" port="result"/>
      </p:input>
    </p:insert>
    . . .
</p:for-each>


p:template:

<p:for-each name="UploadInGroups">
  <p:template name="create-field">
    <p:input port="template">
      <p:inline>
        <field name="iterationCount">$pos</field>
      </p:inline>
   </p:input>
    <p:with-param name="pos" select="p:iteration-position()"/>
  </p:template>
  <p:insert position="last-child" match="/add/doc" name="insertCounter">
      <p:input port="source">
        <p:pipe step=" UploadInGroups" port="current"/>
      </p:input>
      <p:input port="insertion">
        <p:pipe step="create-field" port="result"/>
      </p:input>
    </p:insert>
    . . .
</p:for-each>

Generally, using p:template should be more intuitive and safer (no need to quote the replacement string as in the case of p:string-replace) to use.

Vojtech


--
Vojtech Toman
Consultant Software Engineer
EMC | Information Intelligence Group
vojtech.toman@emc.com
http://developer.emc.com/xmltech

From: xproc-dev-request@w3.org [mailto:xproc-dev-request@w3.org] On Behalf Of Christopher.R.Ball
Sent: Thursday, March 10, 2011 4:04 AM
To: XProc Dev
Subject: Dynamically setting the text of an added element in a pipeline . . ?


Am I missing something . . . or is it not possible to dynamically set the text() of an element in a pipeline (in xproc without having to jump out to P:XSTL or P:XQUERY)?

Something to the effect of:
<p:for-each name="UploadInGroups">
    <p:insert position="last-child" match="/add/doc" name="insertCounter">
      <p:input port="insertion">
        <p:inline>
          <field name="iterationCount">p:iteration-position()</field>
        </p:inline>
      </p:input>
    </p:insert>

    . . .

</p:for-each>
Most grateful,

Christopher
Received on Thursday, 10 March 2011 08:12:48 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Thursday, 10 March 2011 08:12:48 GMT