Florian Keller created XMLBEANS-511:
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             Summary: NPE @ SchemaTypeImpl.isAssignableFrom()
                 Key: XMLBEANS-511
                 URL: https://issues.apache.org/jira/browse/XMLBEANS-511
             Project: XMLBeans
          Issue Type: Bug
    Affects Versions: Version 2.5, Version 2.6.1
            Reporter: Florian Keller


I caught following NullPointerException, using XmlBeans Version 2.5:

{noformat}
java.lang.NullPointerException
        at 
org.apache.xmlbeans.impl.schema.SchemaTypeImpl.isAssignableFrom(SchemaTypeImpl.java:2267)
        at 
org.apache.xmlbeans.impl.schema.SchemaTypeImpl.createElementType(SchemaTypeImpl.java:1044)
        at 
org.apache.xmlbeans.impl.values.XmlObjectBase.create_element_user(XmlObjectBase.java:927)
        at org.apache.xmlbeans.impl.store.Xobj.getUser(Xobj.java:1669)
        at org.apache.xmlbeans.impl.store.Xobj.find_element_user(Xobj.java:2074)
...
{noformat}

Seems, like there's a missing Null-Check.
/xmlbeans/src/typeimpl/org/apache/xmlbeans/impl/schema/SchemaTypeImpl.java, 
line 2269 and following
{{type}} is set by {{type.getBaseType()}} which explicitly may return null. The 
following {{type.equals(this)}} produces above seen NPE.



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