Subject: Re: [xsl] Challenge: do better than my implementation of "update map" and "print map" From: sean@xxxxxxxxxxxxxxxxx Date: Wed, 28 Aug 2013 20:45:35 -0600 |
Faithfully, Sean B. Durkin
Hi Folks,
Below is a stylesheet that implements two functions on maps:
1. Update an existing map with another key/value pair
2. Print the contents of a map
I'm mighty proud of these two functions.
But I'm willing to believe that there exists an even better implementation.
Challenge: can you create a better implementation of these two functions?
/Roger --------------------------------------------------------------------------------- <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:map="http://www.w3.org/2005/xpath-functions/map" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:f="function" version="3.0">
<!-- Test the two map functions -->
<xsl:template match="/"> <xsl:variable name="m" select="map{'Linda' := 'Rosie'}" />
<xsl:variable name="m1" select="f:add-entry-to-map('Sally', 'Betsy', $m)" /> <xsl:variable name="m2" select="f:add-entry-to-map('Barb', 'Sue', $m1)" /> <xsl:variable name="m3" select="f:add-entry-to-map('Nadia', 'Valerie', $m2)" /> <xsl:variable name="m4" select="f:add-entry-to-map('Faye', 'Carol', $m3)" />
<xsl:sequence select="f:print-map($m4)" />
</xsl:template>
<xsl:function name="f:add-entry-to-map" as="map(xs:string, item())">
<xsl:param name="key" as="xs:string" />
<xsl:param name="value" as="item()" />
<xsl:param name="m" as="map(xs:string, item())" />
<xsl:sequence select="map:new((for $i in map:keys($m) return map:entry($i, map:get($m, $i)), map:entry($key, $value)))" />
</xsl:function>
<xsl:function name="f:print-map" as="xs:string*"> <xsl:param name="m" as="map(xs:string, item())" />
<xsl:for-each select="map:keys($m)"> <xsl:value-of select="." /> <xsl:text> - </xsl:text> <xsl:value-of select="map:get($m, .)" /> </xsl:for-each> </xsl:function>
</xsl:stylesheet>
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