Excluding result prefix of a namespace not declared caused NPE
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Key: XALANJ-2320
URL: http://issues.apache.org/jira/browse/XALANJ-2320
Project: XalanJ2
Issue Type: Bug
Components: transformation
Affects Versions: 2.7
Reporter: Andrew Hay
Priority: Minor
Currently migrating from Xalan 2.3.1 to 2.7.0. Had an issue with an XSL
stylesheet which declared a number or namespaces and excluded a number of
result prefixes. This worked under 2.3.1 but produced NPE in 2.7.0 with stack
trace of :-
java.lang.NullPointerException
at
org.apache.xalan.transformer.TransformerImpl.setParameter(TransformerImpl.java:1558)
at
org.apache.xalan.transformer.TransformerImpl.setParameter(TransformerImpl.java:1606)
at
com.axa.framework.util.XSLEngineImpl.translate(XSLEngineImpl.java:140)
at com.axa.framework.util.XSLEngineUtil.translate(XSLEngineUtil.java:79)
at
com.axa.framework.processor.EventProcessor.translate(EventProcessor.java:1198)
at
com.axa.framework.processor.EventProcessor.handleServiceEvent(EventProcessor.java:550)
at
com.axa.framework.processor.EventProcessor.process(EventProcessor.java:141)
at
com.axa.framework.processor.soap.RpcSOAPProcessorManager.handleEvent(RpcSOAPProcessorManager.java:83)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at com.axa.rpc.RpcThread.execute(RpcThread.java:240)
at com.axa.rpc.RpcThread.run(RpcThread.java:135)
The XSL stylesheet decalaration is :-
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:soap-env="http://schemas.xmlsoap.org/soap/envelope/";
xmlns:polphdr="http://www.polaris-uk.co.uk/GenericSchema/2_1/PEMHeader";
xmlns:java="http://xml.apache.org/xslt/java";
exclude-result-prefixes="axa soap-env java">
The problem was resolved by removing axa from the list of namespaces. Would
have expected a more graceful throwing of the error or ignoring of the result
prefix exclusion if the namespace cannot be determined.
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