Jeff Thomas created XALANJ-2783:
-----------------------------------
Summary: TransformerFactory newTransformer with XSLT Source throws
exception when expecting java object parameter
Key: XALANJ-2783
URL: https://issues.apache.org/jira/browse/XALANJ-2783
Project: XalanJ2
Issue Type: Bug
Security Level: No security risk; visible to anyone (Ordinary problems in
Xalan projects. Anybody can view the issue.)
Components: Xalan, XSLTC
Affects Versions: 2.7.3
Environment: Java JRE 17 (Temurin) embedded Xalan
Reporter: Jeff Thomas
We have recently moved from the external Xalan JAR to the Xalan packaged with
JRE 17. I understand this is implicitly a move from the XSLTJ to the XSLTC.
Now we are having problems with previously working XSLT that called non-static
java methods.
In our scenario, we are instantiating the Transformer with a call to the
{{TransformerFactory#newTransformer(StreamSource)}}
Starting with the example in the comments of XALANJ-180 that example works
fine. The 'dateObject' variable is created *within* the XSLT and causes no
problems.
{code:java}
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:xalan="http://xml.apache.org/xalan";
xmlns:java="http://xml.apache.org/xalan/java";
exclude-result-prefixes="xalan java"
version="1.0">
<xsl:template match="/">
<xsl:variable name="date" select="java:java.util.Date.new()"/>
<p>Date <xsl:value-of select="$date"/></p>
<xsl:variable name="result" select="java:getTime($date)" />
<p>date getTime() = <xsl:value-of select="$result"/></p>
</xsl:template>
</xsl:stylesheet> {code}
If however, the java object is being passed as a parameter, an exception is
thrown that the parameter is not a valid object reference.
{code:java}
javax.xml.transform.TransformerException: The first argument to the non-static
Java function 'getTime' is not a valid object reference.
at
java.xml/com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactoryImpl.passErrorsToListener(TransformerFactoryImpl.java:877)
~[?:?]
at
java.xml/com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactoryImpl.newTemplates(TransformerFactoryImpl.java:1084)
~[?:?]
at
java.xml/com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactoryImpl.newTransformer(TransformerFactoryImpl.java:834)
~[?:?] {code}
Sample XSLT:
{code:java}
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:xalan="http://xml.apache.org/xalan";
xmlns:java="http://xml.apache.org/xalan/java";
exclude-result-prefixes="xalan java"
version="1.0">
<xsl:param name="date" select="java:java.util.Date.new()"/>
<xsl:template match="/">
<p>Date <xsl:value-of select="$date"/></p>
<xsl:variable name="result" select="java:getTime($date)" />
<p>date getTime() = <xsl:value-of select="$result"/></p>
</xsl:template>
</xsl:stylesheet>{code}
It is not possible to pass a parameter "date" to the transformer until *after*
it has been instantiated.
But here during instantiation the error is occurring *before* any
transformation is being applied.
How can I instantiate the transformer as above without running into this
exception?
Is this a bug?
NOTE: I am not a XSLT / Xalan expert - just tasked with fixing this problem
with very old code - so sorry if anything about my question is "off" :P.
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