Issue with automatically generating PDF properties/meta-data

[Anonymous1]

Hi,

when creating PDF, we want to automatically add meta-data to the PDF properties.

I used the xsl:template "createMedadata" in the root-processing_fop.xsl for this. Some things work fine, some don't.

What works so far:

• Title of main ditamap is added as the title in the PDF properties
• Language is set according to the xml:lang attribute of the main ditamap
• Creator is the name of my company + the current year

But I can't get to work other things:

• Keywords are not added to the properties
• The copyright icon (©) makes the build fail, no matter how I insert it (© or © or © or ©, impended in xsl:text or just pasted into the dc:creator element)
• The authors are not added to the properties

So this is the code:

Code: Select all

<xsl:template name="createMetadata">

    <fo:declarations>

      <x:xmpmeta>

        <rdf:RDF>

          <rdf:Description rdf:about="">

            <xsl:variable name="title" as="xs:string?">

              <xsl:apply-templates select="." mode="dita-ot:title-metadata"/>

            </xsl:variable>

            <xsl:if test="exists($title)">

              <dc:title>

                <xsl:value-of select="$title"/>

              </dc:title>

            </xsl:if>

            <xsl:variable name="author" as="xs:string?">

              <xsl:apply-templates select="." mode="dita-ot:author-metadata"/>

            </xsl:variable>

            <xsl:if test="exists($author)">

              <dc:creator>

                <xsl:value-of select="$author"/>

              </dc:creator>

            </xsl:if>

            <xsl:variable name="keywords" as="xs:string*">

              <xsl:apply-templates select="." mode="dita-ot:keywords-metadata"/>

            </xsl:variable>

            <xsl:if test="exists($keywords)">

              <pdf:Keywords>

                <xsl:value-of select="$keywords" separator=", "/>

              </pdf:Keywords>

            </xsl:if>

            <xsl:variable name="subject" as="xs:string?">

              <xsl:apply-templates select="." mode="dita-ot:subject-metadata"/>

            </xsl:variable>

            <xsl:if test="exists($subject)">

              <dc:description>

                <rdf:Alt>

                  <rdf:li xml:lang="x-default">

                    <xsl:value-of select="$subject"/>

                  </rdf:li>

                </rdf:Alt>

              </dc:description>

            </xsl:if>

            <dc:creator>Name of my company <xsl:value-of select="year-from-date(current-date())"/></dc:creator>

            <dc:language><xsl:value-of select="/map/@xml:lang"/></dc:language>

            <pdf:Keywords></pdf:Keywords>

          </rdf:Description>

        </rdf:RDF>

      </x:xmpmeta>

    </fo:declarations>

  </xsl:template>

So this works:

Code: Select all

<xsl:if test="exists($title)">

     <dc:title>

           <xsl:value-of select="$title"/>

     </dc:title>

</xsl:if>



<dc:creator>Name of my company <xsl:value-of select="year-from-date(current-date())"/></dc:creator>



<dc:language><xsl:value-of select="/map/@xml:lang"/></dc:language>

Does anybody have an idea how to make the rest work too?

For example, where does the transformation expect the keyword elements to be in the ditamap? I tried them at several locations, for example as topicmeta > metadata > keywords > keyword in the main ditamap.

The authors are located in the topicmeta > author element in the main ditamap.

We are using Oxygen 18.1, custom framework, DITA 2.x, Apache FOP

[Radu]

Hi Ben,

I'm not sure how your DITA Map looks like (how it defines that metadata and so on).
This XSLT stylesheet:

OXYGEN_INSTALL_DIR/frameworks/dita/DITA-OT2.x/plugins/org.dita.pdf2/xsl/fo/root-processing.xsl

defines modes both for "dita-ot:keywords-metadata" and for "dita-ot:author-metadata". If you look at their xpaths, they seem to be targeted towards bookmeta so they seem to work only for DITA Bookmaps and not for regular DITA Maps.

Regards,
Radu

[Anonymous1]

Thank you for pointing this out. Too bad we are not using bookmaps. I will play around with the code a little bit to see if there are some workaround. At least some of the properties work already.