@LuongChu

I'm not very understanding your question. Do you mean you want to hide the user rows like below:

but can still show users when searching:

If you still allow search users, hiding user rows may be useless.

I also want to know do you want to modify the source code by yourself directly?

So please, let me know more about your question.

@steveluo
Thank you for your reply.
Yes, we want to hide user row and still show allowed user information when searching, that's the our security policy.
"I also want to know do you want to modify the source code by yourself directly?" --> This is our security policy so I think it is reasonable to modify by ourself instead of request doing by you.

Hi@LuongChu

Understand.

You can add a default criterion like below (about line #283):

final EntityProvider provider = new EntityProvider(User.class, new SortParam("name", true)) {

    @Override
    protected Criterion[] getCriterions() {
        List<Criterion> list = criterionsModel.getObject();

        // --------------------------------------------------------
        // Add a default criterion
        if (list.isEmpty()) {
            return new Criterion[] { Restrictions.lt("id", -1L) };
        }
        // --------------------------------------------------------

        return list.toArray(new Criterion[0]);
    }
};

Let me know if this is what you want.

@steveluo
I've checked and it works properly as our expectation.
Thank you very much for your support.