StAXUtil incorrectly assumes that XMLInputFactory and XMLOutputFactory 
instances are thread safe
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                 Key: WSCOMMONS-489
                 URL: https://issues.apache.org/jira/browse/WSCOMMONS-489
             Project: WS-Commons
          Issue Type: Bug
          Components: AXIOM
    Affects Versions: Axiom 1.2.8
            Reporter: Andreas Veithen


StAXUtil uses a single XMLInputFactory or XMLOutputFactory instance (per 
classloader). This means that it makes the assumption that these instances are 
thread safe. However, there is nothing in the StAX specs that guarantees that, 
and Sun's implementation in JDK 6 is not thread safe, at least with the default 
properties [1] [2].

[1] 
http://www.java2s.com/Open-Source/Java-Document/6.0-JDK-Modules-com.sun/xml/com/sun/xml/internal/stream/XMLInputFactoryImpl.java.htm
[2] 
http://www.java2s.com/Open-Source/Java-Document/6.0-JDK-Modules-com.sun/xml/com/sun/xml/internal/stream/XMLOutputFactoryImpl.java.htm


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