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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