Invalid header in MetaModel classes generated by AnnotationProcessor
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                 Key: OPENJPA-2044
                 URL: https://issues.apache.org/jira/browse/OPENJPA-2044
             Project: OpenJPA
          Issue Type: Bug
          Components: Enhance
    Affects Versions: 2.1.1, 2.0.1
         Environment: Any
            Reporter: Dale Lane
            Priority: Trivial


The documentation at 
http://openjpa.apache.org/builds/latest/docs/manual/ch13s04.html talks about an 
option available in org.apache.openjpa.persistence.meta.AnnotationProcessor6:

-Aopenjpa.header=<url> : A url whose content will appear as comment header to 
the generated file(s). 

This option does not work.

If I give it a URL - either an http or a file URL - it doesn't put the contents 
from these URLs into the header of the generated files. It puts something like:

 sun.net.www.content.text.PlainTextInputStream@9ea09ea

in the header instead.


I suspect that the AnnotationProcessor is essentially doing:

URL headerurl = new URL(<openjpa.header value>);
String newHeaderComment = headerurl.getContent().toString();

The getContent() is returning an InputStream - as documented here in the 
absence of a content handler factory: 
http://download.oracle.com/javase/6/docs/api/java/net/URLConnection.html#getContent()

Then the toString() call just returns the string representation of the instance 
of the InputStream object. 

I think the AnnotationProcessor should read from the stream instead?

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