[graalvm-users] XML parsing error with native-image

[Ed Peters]

Hi gang,

I generated an executable by following the following process:

   - Creating an executable JAR
   - Running it with the tracing agent to generate my reflection configs
   - Generating a native image using those configs

The build works fine, and the executable starts. One of the first things it
does is to parse an XML file from the filesystem, and I'm getting an NPE
from the XML parser inside the JVM. I've attached an exception stack trace,
and the offending XML file, in case that helps. Also ...

$ java -version

openjdk version "11.0.10" 2021-01-19

OpenJDK Runtime Environment GraalVM CE 21.0.0 (build
11.0.10+8-jvmci-21.0-b06)

OpenJDK 64-Bit Server VM GraalVM CE 21.0.0 (build 11.0.10+8-jvmci-21.0-b06,
mixed mode, sharing)

This is exactly the same codepath I ran using the tracing agent, so I don't
*think* the error should be reflection-related, but I'm open to
suggestions. Also, are there any known bugs in XML parsing?

Thanks,
Ed



-- 
Capital One
Senior Director, Architecture

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Exception in thread "main" java.lang.ExceptionInInitializerError
	at com.oracle.svm.core.classinitialization.ClassInitializationInfo.initialize(ClassInitializationInfo.java:315)
	at org.camunda.bpm.dmn.engine.impl.transform.DefaultDmnTransform.setModelInstance(DefaultDmnTransform.java:111)
	at org.camunda.bpm.dmn.engine.impl.transform.DefaultDmnTransform.modelInstance(DefaultDmnTransform.java:119)
	at org.camunda.bpm.dmn.engine.impl.DefaultDmnEngine.parseDecisions(DefaultDmnEngine.java:55)
	at com.capitalone.qbx490.graalambunda.ClasspathLoadingStrategy.loadDecision(ClasspathLoadingStrategy.java:79)
	at com.capitalone.qbx490.graalambunda.ClasspathLoadingStrategy.<init>(ClasspathLoadingStrategy.java:43)
	at com.capitalone.qbx490.graalambunda.ClasspathLoadingStrategy.<init>(ClasspathLoadingStrategy.java:33)
	at com.capitalone.qbx490.graalambunda.AbstractHandler.createLoadingStrategy(AbstractHandler.java:60)
	at com.capitalone.qbx490.graalambunda.AbstractHandler.<init>(AbstractHandler.java:34)
	at com.capitalone.qbx490.graalambunda.InvokeHandler.<init>(InvokeHandler.java:17)
	at com.capitalone.qbx490.graalambunda.Main.main(Main.java:66)
Caused by: java.lang.NullPointerException
	at com.sun.org.apache.xerces.internal.impl.XMLEntityManager$RewindableInputStream.readAndBuffer(XMLEntityManager.java:3026)
	at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(XMLEntityManager.java:704)
	at com.sun.org.apache.xerces.internal.impl.XMLVersionDetector.determineDocVersion(XMLVersionDetector.java:150)
	at com.sun.org.apache.xerces.internal.impl.xs.opti.SchemaParsingConfig.parse(SchemaParsingConfig.java:593)
	at com.sun.org.apache.xerces.internal.impl.xs.opti.SchemaParsingConfig.parse(SchemaParsingConfig.java:696)
	at com.sun.org.apache.xerces.internal.impl.xs.opti.SchemaDOMParser.parse(SchemaDOMParser.java:530)
	at com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.getSchemaDocument(XSDHandler.java:2226)
	at com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.resolveSchema(XSDHandler.java:2128)
	at com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.constructTrees(XSDHandler.java:1049)
	at com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.parseSchema(XSDHandler.java:652)
	at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaLoader.loadSchema(XMLSchemaLoader.java:617)
	at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaLoader.loadGrammar(XMLSchemaLoader.java:576)
	at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaLoader.loadGrammar(XMLSchemaLoader.java:542)
	at com.sun.org.apache.xerces.internal.jaxp.validation.XMLSchemaFactory.newSchema(XMLSchemaFactory.java:276)
	at javax.xml.validation.SchemaFactory.newSchema(SchemaFactory.java:669)
	at javax.xml.validation.SchemaFactory.newSchema(SchemaFactory.java:701)
	at org.camunda.bpm.model.xml.impl.parser.AbstractModelParser.createSchema(AbstractModelParser.java:187)
	at org.camunda.bpm.model.dmn.impl.DmnParser.<init>(DmnParser.java:50)
	at org.camunda.bpm.model.dmn.Dmn.<init>(Dmn.java:132)
	at org.camunda.bpm.model.dmn.Dmn.<clinit>(Dmn.java:129)
	at com.oracle.svm.core.classinitialization.ClassInitializationInfo.invokeClassInitializer(ClassInitializationInfo.java:375)
	at com.oracle.svm.core.classinitialization.ClassInitializationInfo.initialize(ClassInitializationInfo.java:295)
	... 10 more
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