Java – convert dtmmanagerdefault to ClassCastException of dtmmanager during maven JAXB CodeGen

I encountered a strange problem when trying to run a maven build of JAXB CodeGen using the jaxb2 plug-in (see stacktrace below) The best I can think of is some implementations of dtmmanager, which is from xalan-2.7 The jars in 1 are loaded by different jars However, I have verified that the classpath used to run the JAXB: generate target has only one xalan-2.7.0 containing dtmmanager or dtmmanagerdefault 1. Jar - so I don't know what else I might encounter

Last data point: our build specifies a 'snapshot' configuration file, which is actually only used for jar up sources (using Maven source plugin) and publishes them as artifacts In addition to the default, the above failure condition occurs only when this profile is specified

I use sun's 64 bit JDK 1.6 on Linux x64 (Fedora 13) 0_ Maven 2.2. Running on 21 1 - see stack trace for 'MVN - V' information below

Any ideas about what the problem might be and / or how to debug? This has saddened me over the past few days and has now prevented progress:（

java.lang.ClassCastException: org.apache.xml.dtm.ref.DTMManagerDefault cannot be cast to org.apache.xml.dtm.DTMManager
    at org.apache.xml.dtm.DTMManager.newInstance(DTMManager.java:137)
    at org.apache.xpath.XPathContext.<init>(XPathContext.java:102)
    at org.apache.xpath.jaxp.XPathImpl.eval(XPathImpl.java:207)
    at org.apache.xpath.jaxp.XPathImpl.evaluate(XPathImpl.java:281)
    at com.sun.tools.xjc.reader.internalizer.Internalizer.buildTargetNodeMap(Internalizer.java:224)
    at com.sun.tools.xjc.reader.internalizer.Internalizer.buildTargetNodeMap(Internalizer.java:289)
    at com.sun.tools.xjc.reader.internalizer.Internalizer.transform(Internalizer.java:134)
    at com.sun.tools.xjc.reader.internalizer.Internalizer.transform(Internalizer.java:96)
    at com.sun.tools.xjc.reader.internalizer.DOMForest.transform(DOMForest.java:448)
    at com.sun.tools.xjc.ModelLoader.buildDOMForest(ModelLoader.java:342)
    at com.sun.tools.xjc.ModelLoader.loadXMLSchema(ModelLoader.java:374)
    at com.sun.tools.xjc.ModelLoader.load(ModelLoader.java:167)
    at com.sun.tools.xjc.ModelLoader.load(ModelLoader.java:113)
    at org.jvnet.jaxb2.maven2.XJC2Mojo.runXJC(XJC2Mojo.java:1119)
    at org.jvnet.jaxb2.maven2.XJC2Mojo.execute(XJC2Mojo.java:720)
...

mvn -v：

# mvn -v
Apache Maven 2.2.1 (r801777; 2009-08-06 14:16:01-0500)
Java version: 1.6.0_21
Java home: /usr/java/jdk1.6.0_21/jre
Default locale: en_US,platform encoding: UTF-8
OS name: "linux" version: "2.6.33.3-85.fc13.x86_64" arch: "amd64" Family: "unix"

resolvent

Solution

The solution is to search the classpath for all the dependencies of xalan and xercesimpl These dependencies should be excluded

to update

I found the answer – see http://www.mail-archive.com/dev @qpid. apache. org/msg07295. html

Had a look at this closely and figured it was due to a classpath class
due to Sun bundling an older version of Xalan jar.
I have disabled this test until we come up with a decent solution.

Rajith

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