Re: [xsl] how to match node set with attribute then pass to a template

Subject: Re: [xsl] how to match node set with attribute then pass to a template
From: "G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx>
Date: Fri, 26 Sep 2003 13:13:07 -0400
At 2003-09-26 12:24 -0400, Biying Huang wrote:
In PDF output, I am trying to display 2 images side by side and its info
above each image, but only display images that has the attribute
showImage="true".

This is an ideal situation for the cell-based row-grouping strategy in XSL-FO ... most of my students have never heard of this and only think of the row-based row-grouping strategy because of their background in HTML. I see from your attempt that you, too, were trying to work out an answer using the row-based row-grouping strategy.


When dealing algorithmically with column counts in XSL-FO, using the cell-based row-grouping strategy delegates the hard work to the XSL-FO engine, making the stylesheet very easy.

The example below works as expected in both Antenna House and RenderX XSL-FO engines. I increased the size of the data sample to show it working with more cells.

I hope this helps.

...................... Ken


T:\Biying>type biying.xml <AttachmentList> <Attachment showImage="true"> <filename>Image5445.jpg</filename> <info>image information</info> </Attachment>

  <Attachment showImage="false">
        <filename>Image5446.jpg</filename>
        <info>image information</info>
  </Attachment>

  <Attachment showImage="true">
        <filename>Image5447.jpg</filename>
        <info>image information</info>
  </Attachment>
  <Attachment showImage="false">
        <filename>Image5448.jpg</filename>
        <info>image information</info>
  </Attachment>

  <Attachment showImage="true">
        <filename>Image5449.jpg</filename>
        <info>image information</info>
  </Attachment>
  <Attachment showImage="false">
        <filename>Image5450.jpg</filename>
        <info>image information</info>
  </Attachment>

  <Attachment showImage="true">
        <filename>Image5451.jpg</filename>
        <info>image information</info>
  </Attachment>

  <Attachment showImage="true">
        <filename>Image5452.jpg</filename>
        <info>image information</info>
  </Attachment>
  <Attachment showImage="false">
        <filename>Image5453.jpg</filename>
        <info>image information</info>
  </Attachment>

  <Attachment showImage="true">
        <filename>Image5454.jpg</filename>
        <info>image information</info>
  </Attachment>

</AttachmentList>

T:\Biying>type biying.xsl
<?xml version="1.0" encoding="iso-8859-1"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
                xmlns="http://www.w3.org/1999/XSL/Format";
                version="1.0">

<xsl:output indent="yes"/>

<xsl:template match="/">
<root font-family="Times" font-size="20pt">

  <layout-master-set>
    <simple-page-master master-name="frame"
                        page-height="210mm" page-width="297mm"
                        margin-top="1cm" margin-bottom="1cm"
                        margin-left="1cm" margin-right="1cm">
      <region-body region-name="frame-body"/>
    </simple-page-master>
  </layout-master-set>

  <page-sequence master-reference="frame">
    <flow flow-name="frame-body">
      <block>Test of table columns</block>
      <table border="solid">
        <table-body>
          <xsl:apply-templates select="/AttachmentList/
                                       Attachment[@showImage='true']"/>
        </table-body>
      </table>
    </flow>
  </page-sequence>
</root>
</xsl:template>

<xsl:template match="Attachment">
  <table-cell border="solid">
    <xsl:if test="count( preceding-sibling::Attachment[@showImage='true'] )
                  mod 2 = 0">
      <xsl:attribute name="starts-row">true</xsl:attribute>
    </xsl:if>
    <block>
      <xsl:value-of select="filename"/>
    </block>
  </table-cell>
</xsl:template>

</xsl:stylesheet>
T:\Biying>saxon -o biying.fo biying.xml biying.xsl

T:\Biying>type biying.fo
<?xml version="1.0" encoding="utf-8"?>
<root xmlns="http://www.w3.org/1999/XSL/Format"; font-family="Times" font-size="20pt">
<layout-master-set>
<simple-page-master master-name="frame" page-height="210mm" page-width="297mm" margin-top="1cm" margin-bottom="1cm" margin-left="1cm" margin-right="1cm">
<region-body region-name="frame-body"/>
</simple-page-master>
</layout-master-set>
<page-sequence master-reference="frame">
<flow flow-name="frame-body">
<block>Test of table columns</block>
<table border="solid">
<table-body>
<table-cell border="solid" starts-row="true">
<block>Image5445.jpg</block>
</table-cell>
<table-cell border="solid">
<block>Image5447.jpg</block>
</table-cell>
<table-cell border="solid" starts-row="true">
<block>Image5449.jpg</block>
</table-cell>
<table-cell border="solid">
<block>Image5451.jpg</block>
</table-cell>
<table-cell border="solid" starts-row="true">
<block>Image5452.jpg</block>
</table-cell>
<table-cell border="solid">
<block>Image5454.jpg</block>
</table-cell>
</table-body>
</table>
</flow>
</page-sequence>
</root>



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G. Ken Holman                 mailto:gkholman@xxxxxxxxxxxxxxxxxxxx
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