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:
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?