tree 7da1c524ed70b60afbf9483fe10ff0470f792ecb
parent 5300bb8c37cd5cb96a331e3a6f29aa2c3c209633
author Sho SHIMIZU <sshimizu@us.fujitsu.com> 1435856888 -0700
committer Sho SHIMIZU <sshimizu@us.fujitsu.com> 1435858998 -0700

ONOS-2294: Redefine LinkResource as interface

LinkResource was defined as an abstract class, but it doesn't define any
methods. Maker interface fits this case.

Note: This change may break backward compatibility for those defining a
sub-class of LinkResource.

Change-Id: I53cb7e8eae7057d07c63960c488979a99cd54d52