To enable proxy of classes for AOP I needed to add and auto-proxy option
like this <aop:aspectj-autoproxy proxy-target-class="true"/>. Then, to
enable use of proxies the Services that depend on the DataRepository
needed a no parameter version of a constructor and in app-config the Rep
is set by a setter instead of a constructor argument. Now the SqlLogger
class wraps the MethodArgs[0] (String SELECT) with the constraining
SELECT that gets the current user KTN from the security context.