Daniel Hengst created XMLBEANS-506:
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Summary: NPE trying to load resource file if XmlBeans was loaded
by the bootstrap ClassLoader
Key: XMLBEANS-506
URL: https://issues.apache.org/jira/browse/XMLBEANS-506
Project: XMLBeans
Issue Type: Bug
Affects Versions: Version 2.5
Environment: JBoss 6.1.0, JVM 1.6.0_30, CentOS 5.7 x86_64
Reporter: Daniel Hengst
To solve a dependency issue, we put XmlBeans 2.5.0 into the endorsed folder.
This brought the following exception:
java.lang.NullPointerException
at org.apache.xmlbeans.impl.store.Path.<clinit>(Path.java:65)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at
org.apache.xmlbeans.impl.schema.SchemaTypeLoaderBase.getMethod(SchemaTypeLoaderBase.java:73)
at
org.apache.xmlbeans.impl.schema.SchemaTypeLoaderBase.<clinit>(SchemaTypeLoaderBase.java:66)
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:597)
at org.apache.xmlbeans.XmlBeans.getNoType(XmlBeans.java:856)
at org.apache.xmlbeans.XmlBeans.<clinit>(XmlBeans.java:881)
The source code of org.apache.xmlbeans.impl.store.Path looks like this:
63: ClassLoader cl = Path.class.getClassLoader();
64: String id =
"META-INF/services/org.apache.xmlbeans.impl.store.PathDelegate.SelectPathInterface";
65: InputStream in = cl.getResourceAsStream(id); <- NPE occurs here
This appears to be a bug. The JavaDoc for getClassLoader() says: "Some
implementations may use null to represent the bootstrap class loader. This
method will return null in such implementations if this class was loaded by the
bootstrap class loader." So the caller of getClassLoader() should take into
account that it might return null, which does not happen here. I would suggest
changing line 65 to the following:
InputStream in = Path.class.getResourceAsStream(id);
I checked XmlBeans 2.6.0 and browsed the SVN sources, the problem still exists.
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