DomainCombiner

A DomainCombiner provides a means to dynamically update the ProtectionDomains associated with the current AccessControlContext.

A DomainCombiner is passed as a parameter to the appropriate constructor for AccessControlContext. The newly constructed context is then passed to the AccessController.doPrivileged(..., context) method to bind the provided context (and associated DomainCombiner) with the current execution Thread. Subsequent calls to AccessController.getContext or AccessController.checkPermission cause the DomainCombiner.combine to get invoked.

The combine meth