Much appreciated Henry. After putting the necessary jars in the appropriate
endorsed directory, the NullPointerException did go away and the transformation
ran fine.
Thanks again for the help.
Robert
----- Original Message ----
From: Henry Zongaro (JIRA) <xalan-dev@xml.apache.org>
To: monoplyf...@yahoo.com
Sent: Tue, January 12, 2010 3:00:54 PM
Subject: [jira] Commented: (XALANJ-2513) TransformerException:
NullPointerException with Java 1.6 on AIX
[
https://issues.apache.org/jira/browse/XALANJ-2513?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12799357#action_12799357
]
Henry Zongaro commented on XALANJ-2513:
---------------------------------------
Sorry - I probably should have realized what was going on sooner. IBM's Java
1.4.2 and Java 5.0 includes code derived from the Xalan-J interpreter and
XSLTC, with some additional bug fixes and some other IBM-specific features.
For historical reasons, all this is included in the IBM Java run-time
environment with package names unchanged from the Apache versions of the code.
IBM's Java 6.0 no longer includes XSLTC, but instead includes a proprietary
XSLT compiler. Code derived from the Xalan-J interpreter is still part of
IBM's Java 6.0. So when you include XSLTC on your class path with IBM's Java
6.0, you end up with XSLTC picking up some classes from the boot class path
(those that are included with the Java run-time) and others from your own class
path. The versions of the classes are incompatible, and you end up with a
NullPointerException.
This has been a long-standing problem with overriding a version of an XSLT
processor that's included with the Java run-time. The way to work around it is
to use the Endorsed Standards Override Mechanism to use your xalan.jar,
serializer.jar, xml-apis.jar and xercesImpl.jar in preference to the version of
the JAXP implementation that's included with your Java run-time. See [1] for
more information.
I hope that helps.
[1] http://xml.apache.org/xalan-j/faq.html#faq-N100EF
> TransformerException: NullPointerException with Java 1.6 on AIX
> ---------------------------------------------------------------
>
> Key: XALANJ-2513
> URL: https://issues.apache.org/jira/browse/XALANJ-2513
> Project: XalanJ2
> Issue Type: Bug
> Security Level: No security risk; visible to anyone(Ordinary problems in
> Xalan projects. Anybody can view the issue.)
> Components: transformation, Xalan
> Affects Versions: 2.7.1
> Environment: AIX 5.2, IBM SDK Version 6, Xalan-J 2.7.1
> Reporter: Robert Quan
>
> Attempting to use trax to perform a transformation using IBM SDK Java 6 on
> AIX will result in a TransformerException: java.null.NullPointerException.
> If one was to use IBM Java 5, the transformation will run without issue.
> The following details the data required to reproduce the issue:
> Stylesheet (sort.xsl) - Note that the stylesheet will be precompiled into a
> translet in a jar called ipteXslTranslets.jar
> -----------------------------------------------------------------------------------------------------------------------------------------------------------
> <?xml version="1.0" encoding="UTF-8"?>
> <!DOCTYPE xsl:stylesheet [
> <!ENTITY nbsp " "> <!-- NO-BREAK SPACE -->
> ]>
> <xsl:stylesheet version="1.0"
> xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
> <xsl:output method="html" indent="yes" />
> <xsl:param name="rowstart">1</xsl:param>
> <xsl:param name="rowlimit">20</xsl:param>
> <xsl:param name="sortcolumn">5</xsl:param>
> <xsl:param name="sorttype">number</xsl:param>
> <xsl:param name="sortorder">descending</xsl:param>
> <xsl:template match="/">
> <xsl:apply-templates />
> </xsl:template>
> <xsl:template match="*/p">
> <xsl:copy-of select="." />
> </xsl:template>
> <xsl:template match="*/pre">
> <xsl:copy-of select="." />
> </xsl:template>
> <xsl:template match='*/tab...@class="summary"]'>
> <xsl:copy-of select="." />
> </xsl:template>
> <xsl:template name="getActualRowstart">
> <xsl:param name="totalrows" />
> <xsl:choose>
> <xsl:when test="0 = $totalrows">
> <xsl:text>0</xsl:text>
> </xsl:when>
> <xsl:when test="$rowstart > $totalrows">
> <xsl:value-of select="(floor(($totalrows - 1) div $rowlimit) *
> $rowlimit) + 1"/>
> </xsl:when>
> <xsl:otherwise>
> <xsl:value-of select="$rowstart"/>
> </xsl:otherwise>
> </xsl:choose>
> </xsl:template>
> <xsl:template match='*/tab...@class="formatted"]'>
> <xsl:variable name="totalrows"><xsl:value-of select="count(tbody/tr)"
> /></xsl:variable>
> <xsl:variable name="actualRowstart">
> <xsl:call-template name="getActualRowstart">
> <xsl:with-param name="totalrows" select="$totalrows"/>
> </xsl:call-template>
> </xsl:variable>
> <xsl:copy>
> <xsl:copy-of select="@*" />
> <xsl:apply-templates />
> </xsl:copy>
> <div class="table-metadata" style="display: none;">
> <span class="table-metadata-total-rows"><xsl:value-of
> select="$totalrows" /></span>
> </div>
> <div class="table-metadata" style="display: none;">
> <span class="table-metadata-row-start"><xsl:value-of
> select="$actualRowstart" /></span>
> </div>
> </xsl:template>
> <xsl:template match="thead|tfoot">
> <xsl:copy-of select="." />
> </xsl:template>
> <xsl:template match="tbody">
> <xsl:variable name="totalrows"><xsl:value-of select="count(tr)"
> /></xsl:variable>
> <xsl:variable name="actualRowstart">
> <xsl:call-template name="getActualRowstart">
> <xsl:with-param name="totalrows" select="$totalrows"/>
> </xsl:call-template>
> </xsl:variable>
> <tbody>
> <xsl:for-each select="tr">
> <xsl:sort select="td[position() = $sortcolumn]"
> order="{$sortorder}" data-type="{$sorttype}" />
> <xsl:if test="position() >= $actualRowstart and
> position() < $actualRowstart + $rowlimit">
> <xsl:element name="tr">
> <xsl:choose>
> <xsl:when test="position() mod 2 = 1">
> <xsl:attribute name="class">shaded</xsl:attribute>
> </xsl:when>
> </xsl:choose>
> <xsl:copy-of select="*" />
> </xsl:element>
> </xsl:if>
> </xsl:for-each>
> </tbody>
> </xsl:template>
> </xsl:stylesheet>
> Input XML data (0.xml)
> ------------------------------
> <div>
> <BR/><table xmlns:java="http://xml.apache.org/xslt/java"; class="summary"
> cellSpacing="0" width="400" border="0">
> <tr>
> <td>Elapsed Time (hh:mm:ss): 00:01:20</td>
> </tr>
> <tr>
> <td>VLAN 530</td>
> </tr>
> </table><table xmlns:java="http://xml.apache.org/xslt/java"; class="formatted"
> width="600">
> <thead>
> <th class="columnHeader sortAsText" width="16%">Address</th><th
> class="columnHeader sortAsNumbers" width="12%"><a href=""
> onclick="return(top.graphSingleTimestampResults('graphName=top-talk-grph|desc=SmartSight
> Top Talkers by MAC for VLAN
> 530|cir=10000|dir=|dataSetIndex=1|count=3|label1=0011.434E.8044|value1=0.0|label2=0012.F01A.ED76|value2=0.0|label3=0003.FEAB.6C23|value3=0.0|deviceId=2'));">Bit
> Rate
> (Mbps)</a></th><th class="columnHeader sortAsNumbers" width="12%">Utilization
> (% of CIR)</th><th class="columnHeader sortAsNumbers" width="12%">Pkt Rate
> (pkts/sec)</th><th class="columnHeader sortAsNumbers" width="12%">Total Bit
> Count (Mb)</th><th class="columnHeader sortAsNumbers" width="12%">Total Pkt
> Count</th>
> </thead>
> <tbody>
> <tr class="shaded">
> <td class="rowDataLeft">0011.434E.8044</td><td
> class="rowDataRight">0.000</td><td class="rowDataRight">0.000</td><td
> class="rowDataRight">0.433</td><td class="rowDataRight">0.026</td><td
> class="rowDataRight">32</td>
> </tr>
> <tr class="">
> <td class="rowDataLeft">0012.F01A.ED76</td><td
> class="rowDataRight">0.000</td><td class="rowDataRight">0.000</td><td
> class="rowDataRight">0.200</td><td class="rowDataRight">0.014</td><td
> class="rowDataRight">16</td>
> </tr>
> <tr class="shaded">
> <td class="rowDataLeft">0003.FEAB.6C23</td><td
> class="rowDataRight">0.000</td><td class="rowDataRight">0.000</td><td
> class="rowDataRight">0.500</td><td class="rowDataRight">0.023</td><td
> class="rowDataRight">40</td>
> </tr>
> </tbody>
> </table>
> </div>
> Source Code (XsltTest.java)
> --------------------------------------
> package test.xslt;
> import java.io.File;
> import javax.xml.transform.Transformer;
> import javax.xml.transform.TransformerFactory;
> import javax.xml.transform.stream.StreamResult;
> import javax.xml.transform.stream.StreamSource;
> import javax.xml.transform.Templates;
> /**
> *
> * @author dmalykhanov
> */
> public class XsltTest {
> private TransformerFactory tf;
> //static {
> // System.setProperty(
> // "javax.xml.transform.TransformerFactory",
> // "org.apache.xalan.xsltc.trax.TransformerFactoryImpl"
> // );
> //}
> public static void main(String... args) throws Exception {
> XsltTest app = new XsltTest();
> System.exit(app.run(args));
> }
> private int run(String[] args) throws Exception {
> tf = TransformerFactory.newInstance();
> tf.setAttribute("use-classpath", Boolean.TRUE);
> Transformer xslp = tf.newTransformer(new StreamSource(args[1]));
> xslp.transform(new StreamSource(new File(args[0])), new
> StreamResult(System.out));
> return 0;
> }
> }
> Shell script used to run transformation
> ----------------------------------------------------
> #!/bin/sh
> CLASSPATH='.:/spirent/metro/5.000/IPTE/ipte/WEB-INF/lib/ipteXslTranslets.jar:/afs/hekimian.com/cm-cots/ALL-OS/xalan-j/2.7.1-CM1/xalan.jar:/afs/hekimian.com/cm-cots/ALL-OS/xalan-j/2.7.1-CM1/serializer.jar:/afs/hekimian.com/cm-cots/ALL-OS/xalan-j/2.7.1-CM1/xercesImpl.jar:/afs/hekimian.com/cm-cots/ALL-OS/xalan-j/2.7.1-CM1/xml-apis.jar:'
> export CLASSPATH
> exec /spirent/cots/java/1.6/jre/bin/java \
> -Djaxp.debug=1 \
>
> -Djavax.xml.transform.TransformerFactory=org.apache.xalan.xsltc.trax.TransformerFactoryImpl
> \
>
> -Djavax.xml.parsers.DocumentBuilderFactory=org.apache.xerces.jaxp.DocumentBuilderFactoryImpl
> \
>
> -Djavax.xml.parsers.SAXParserFactory=org.apache.xerces.jaxp.SAXParserFactoryImpl
> \
> test.xslt.XsltTest "$@"
> ** Note: ipteXslTranslets.jar contains the precompiled stylesheet sort.xsl
> ** Note: Commenting out the directive to reassign the TransformerFactory to
> trax.TransformerFactoryImpl will not generate the exception and the
> transformation will work
> Command line command to run the transformation
> ----------------------------------------------------------------------
> $ run.sh 0.xml sort
> ** Note: 0.xml contains the input xml as provided above
> ** Note: sort is the precompiled translet class for the stylesheet provided
> above
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