001/*
002 * (C) Copyright 2006-2008 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     bstefanescu
018 *
019 * $Id$
020 */
021
022package org.nuxeo.ecm.webengine.security.guards;
023
024import org.nuxeo.ecm.webengine.security.Guard;
025import org.nuxeo.runtime.model.Adaptable;
026
027/**
028 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
029 */
030public class Not implements Guard {
031
032    protected final Guard perm;
033
034    public Not(Guard guard) {
035        perm = guard;
036    }
037
038    public boolean check(Adaptable context) {
039        return !perm.check(context);
040    }
041
042    @Override
043    public String toString() {
044        return "NOT " + perm;
045    }
046
047}