Alternate option to use some else UMA policy rather than JS policy

问题

I'm using JS policy as shown below:

$evaluation.getPermission();
var identity = $evaluation.getContext().getIdentity();
var resource = permission.getResource();
if (resource) {
    if (resource.getOwner().equals(identity.getId())) {
        $evaluation.grant();
    }
}

I just want this JS alternate option to client, role, etc policy. I've tried a lot of options but I haven't got success.

Please anyone can help out with this.

来源：https://stackoverflow.com/questions/64364399/alternate-option-to-use-some-else-uma-policy-rather-than-js-policy