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From "Adam T Anderson" <>
Subject Java 9 api change
Date Wed, 17 May 2017 22:09:05 GMT


In CXF we use org.apache.cxf.transport.http.ReferencingAuthenticator to
create a chain of org.apache.cxf.transport.http.CXFAuthenticators.
Every time we add a new CXFAuthenticator we set the new link as the default
authenticator and link to the old head. This is so we can delegate the
static call Authenticator.requestPasswordAuthentication() to a non-static
list of instances of CXFAuthenticator.

When Authenticator.requestPasswordAuthentication() is called, the JDK pass
es in the requesting host, port, protocol, scheme etc... which get set as
private variables on the current head ReferencingAuthenticator and then
ReferencingAuthenticator.getPasswordAuthentication() gets called.
ReferencingAuthenticator.getPasswordAuthentication() uses deep reflection
to copy the private non-static variables of from the
head to each link in the chain before calling getPasswordAuthentication()
on each of the wrapped CXFAuthenticators.

This will no longer work in Java 9 with the new jigsaw module changes. We
need a mechanism in Java 9 to copy those private variables from one
authenticator to another for our Authenticator chain to work.

The 2 options I see are:

1. Request Oracle to add setter methods for each variable (there are
already getters) to the Authenticator API.
2. Request Oracle to add a "copyState" method to the Authenticator API
which copies all private non-static variables of one Authenticator to

Right now I am leaning towards options #2.

What are your thoughts? Are there any other options to make this work with
Java 9?

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