Subject: RE: xsl:key use attribute using string() causes missing all matches except the first one
From: "Michael Kay" <mhk@xxxxxxxxx>
Date: Wed, 24 Mar 2004 17:48:05 -0000
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# If you apply the function string() to the node "elements" the
# result is "text1text2text3"
#
# string(//elements) = "text1text2text3"
#
# Yov@nis
You are right, but I'm not sure how this information is relevant.
Michael Kay
#
# -----Original Message-----
# From: Michael Kay [mailto:mhk@xxxxxxxxx]
# Sent: Wednesday, March 24, 2004 8:56 AM
# To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
# Subject: RE: xsl:key use attribute using string()
# causes missing all matches except the first one
#
# When you apply string() to a node-set containing more than
# one node it returns the string value of the first node in the
# node-set.
#
# Michael Kay
#
# # -----Original Message-----
# # From: Xiaocun Xu [mailto:xiaocunxu@xxxxxxxxx] # Sent: 24
# March 2004 16:42 # To: xsl-list # Subject: xsl:key use
# attribute using string() causes # missing all matches except
# the first one # # Hi, # # I recently had an interesting
# discovery with xsl:key use # attribute using string().
# # I been using string() in xsl:key use attribute extensively
# # since it allows me to retrieve records using the key value
# # "". But in the following example, using string() caused me
# # to miss all matches except the first one. I am not sure
# what # is the reason for this, would appreciate if anyone
# could shed # light on this behavior. Example input XML and
# XSLT below.
# #
# # thanks,
# # Xiaocun
# #
# # input XML:
# # <range>
# # <row row="16">
# # <cell column="1">supplier</cell>
# # <cell column="2">s3</cell>
# # <cell column="3">item</cell>
# # <cell column="4">
# # <subcell>item1</subcell>
# # <subcell>item2</subcell>
# # <subcell>item3</subcell>
# # </cell>
# # <cell column="5">s3_AM1</cell>
# # <cell column="6">accepted</cell>
# # </row>
# # <row row="17">
# # <cell column="1">supplier</cell>
# # <cell column="2">s4</cell>
# # <cell column="3">item</cell>
# # <cell column="4">
# # <subcell>item1</subcell>
# # <subcell>item2</subcell>
# # <subcell>item4</subcell>
# # </cell>
# # <cell column="5">s4_AM1</cell>
# # <cell column="6">accepted</cell>
# # </row>
# # <row row="18">
# # <cell column="1">supplier</cell>
# # <cell column="2">s5</cell>
# # <cell column="3">item</cell>
# # <cell column="4">item1</cell>
# # <cell column="5">s5_AM1</cell>
# # <cell column="6">accepted</cell>
# # </row>
# # </range>
# #
# # complete XSLT without using string():
# # <xsl:stylesheet version="1.0"
# # xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
# # xmlns:fo="http://www.w3.org/1999/XSL/Format">
# # <xsl:key name="itemInvitesKey"
# # match="//row[cell[@column=3] = 'item']"
# # use="cell[@column=4]"/>
# # <xsl:key name="itemInvitesKey"
# # match="//row[cell[@column=3] = 'item']"
# # use="(cell[@column=4]/subcell)"/>
# # <xsl:template match="/">
# # <xsl:apply-templates select="range"/>
# # </xsl:template>
# # <xsl:template match="range">
# # <xsl:text>item1
</xsl:text>
# # <xsl:for-each select="key('itemInvitesKey', 'item1')">
# # <xsl:value-of select="cell[@column=2]"/>
# # <xsl:text>
</xsl:text>
# # </xsl:for-each>
# # <xsl:text>
</xsl:text>
# # <xsl:text>item2
</xsl:text>
# # <xsl:for-each select="key('itemInvitesKey', 'item2')">
# # <xsl:value-of select="cell[@column=2]"/>
# # <xsl:text>
</xsl:text>
# # </xsl:for-each>
# # </xsl:template>
# # </xsl:stylesheet>
# #
# # correct output:
# # item1
# # s5
# # s3
# # s4
# #
# # item2
# # s3
# # s4
# #
# # Exact same XSLT as above, except xsl:key use attribute
# using string():
# # <xsl:key name="itemInvitesKey"
# # match="//row[cell[@column=3] = 'item']"
# # use="string(cell[@column=4]/subcell)"/>
# #
# # Output: same as above, except no matches were returned
# except # for the first key (item1) # item1 # s5 # s3 # s4 # #
# item2 # # __________________________________
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