June 2008
Intermediate to advanced
986 pages
27h 8m
English
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Another Type of Grouping: group-adjacent
With the group-adjacent approach, we’ll create a
group based on some number of elements that are together in the source
document. Our example input document is an HTML document that features groups of paragraphs
together:
<?xml version="1.0"?>
<!-- group-adjacent_input.html -->
<html>
<body>
<h2>Steps for grouping in the Muench method</h2>
<p>Define a <code>key</code> for the property we want
to use for grouping.</p>
<p>Select all of the nodes ...</p>
<p>For each unique grouping value, ...</p>
<h2>Steps for grouping in XSLT 2.0</h2>
<p>Define an XPath expression ...</p>
<p>Select all of the nodes we want to group ...</p>
<p>Instead of dealing with each ...</p>
</body>
</html>This is text from earlier in this chapter, displayed here as
HTML. (This book is written entirely in DocBook, an XML vocabulary
with a very well-defined structure.) What we want to do is convert any
sequence of paragraphs into an unordered list (<ul>), with each paragraph converted
into a list item (<li>).
We’ll use group-adjacent to do
that. Our stylesheet looks like this:
<?xml version="1.0"?>
<!-- for-each-group_group-adjacent.xsl --> <xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:output method="html" include-content-type="no"/> <xsl:template match="/"> <html> <head> <title>Grouping with group-adjacent</title> </head> <body style="font-family: sans-serif;"> <h1>Grouping with group-adjacent</h1> <xsl:for-each-group select="html/body/*" ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.