Details
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Type:
Bug
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Status: Resolved
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: 2.7
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Fix Version/s: 2.7
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Component/s: Diagnostic-messages-resources, Xalan
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Labels:None
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Environment:Windows 2000. Xalan Java 2.6.0
Description
The following error occurs in when I run my application.
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java.lang.NullPointerException
at org.apache.xml.serializer.ToHTMLStream.processAttribute(ToHTMLStream.java:957)
at org.apache.xml.serializer.ToHTMLStream.processAttributes(ToHTMLStream.java:1644)
at org.apache.xml.serializer.ToHTMLStream.endElement(ToHTMLStream.java:883)
at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java:708)
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My application is big, I cannot provide my application as testcase. However, I do know the reason for this failure. I will provide a patch that provide a more reasonable error message rather than NullPointerException.
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Modfied the patch to patch.1966.txt (attached) which uses spaces,
not tabs, when indenting. This reduces the number of differences when
reviewing with the help of "diff" tools.
Patch patch.1967.txt was applied to CVS.
This issue is no longer relevant for 2.7.1, it is fixed in 2.7.1.
Changing the affected version to 2.7.
In my stylesheet, I used <xsl:namespace-alias> as follows:
<xsl:namespace-alias stylesheet-prefix="xhtml" result-prefix="#default"/>
However, I did not declare the default namespace uri. If I decalre the default namespace even with uri as empty string, my application works fine. So it is a user error. However, NullPointerException is not a good feedback to use for the error. The proposed patch provide a more reasonable error message to the user.