xsl:key generates one key entry for two different strings
---------------------------------------------------------
Key: XALANJ-2237
URL: http://issues.apache.org/jira/browse/XALANJ-2237
Project: XalanJ2
Type: Bug
Components: Xalan
Versions: 2.7
Environment: (Fedora Core 3) Linux 2.6.10-1.770_FC3smp #1 SMP Thu Feb 24
14:20:06 EST 2005 i686 i686 i386 GNU/Linux
java version "1.4.2_05"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_05-b04)
Java HotSpot(TM) Client VM (build 1.4.2_05-b04, mixed mode)
Reporter: Nicholas Sushkin
Priority: Critical
It seems that xsl:key generates one key entry for two different values of the
key. Is this some type of hash collision?
Input file:
<root>
<Transaction num="1">
<PC>PRMI03SO</PC>
</Transaction>
<Transaction num="2">
<PC>PRMI03T0</PC>
</Transaction>
<Transaction num="3">
<PC>PRMI03T1</PC>
</Transaction>
</root>
Stylesheet:
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
version="1.0">
<xsl:output method="xml" encoding="ISO-8859-1"/>
<xsl:key name="txn-by-account" match="Transaction" use="PC"/>
<xsl:template match = "/">
<xsl:apply-templates select="root"/>
</xsl:template>
<xsl:template match="root">
<Accounts>
<!-- select the first Transaction for each unique account -->
<!-- xsl:apply-templates select="Transaction[ generate-id() =
generate-id(key('txn-by-account', PC)[1]) ]"/ -->
<xsl:apply-templates select="Transaction"/>
</Accounts>
</xsl:template>
<xsl:template match="Transaction">
<Account num="[EMAIL PROTECTED]" pc="{PC}"
count="{count(key('txn-by-account', PC))}" gid="{generate-id()}"
gid1="{generate-id(key('txn-by-account', PC)[1])}">
<PCs>
<xsl:for-each select="key('txn-by-account', PC)">
<xsl:value-of select="@num"/>
<xsl:text>=</xsl:text>
<xsl:value-of select="PC"/><xsl:text>, </xsl:text>
</xsl:for-each>
</PCs>
</Account>
</xsl:template>
</xsl:stylesheet>
Incorrect output:
java -server -Xmx384m -Xms32m org.apache.xalan.xslt.Process -edump -diag -IN
/tmp/keybug.xml -XSL /tmp/keybug.xsl -XML
<?xml version="1.0" encoding="ISO-8859-1"?><Accounts><Account gid1="N10004"
gid="N10004" count="2" pc="PRMI03SO" num="1"><PCs>1=PRMI03SO, 2=PRMI03T0,
</PCs></Account><Account gid1="N10004" gid="N1000B" count="2" pc="PRMI03T0"
num="2"><PCs>1=PRMI03SO, 2=PRMI03T0, </PCs></Account><Account gid1="N10012"
gid="N10012" count="1" pc="PRMI03T1" num="3"><PCs>3=PRMI03T1,
</PCs></Account></Accounts>
--------- Transform of /tmp/keybug.xml via /tmp/keybug.xsl took 334 ms
Since the values of all PC element are different in all three accounts, there
should be three different entries in the key. However, as you can see, the key
returns only two different entries. The key returns the same nodeset for
matches PRMI03SO and PRMI03T0.
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