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 java.util.Collection;
025
026import org.nuxeo.ecm.webengine.security.Guard;
027import org.nuxeo.runtime.model.Adaptable;
028
029/**
030 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
031 */
032public class Or implements Guard {
033
034    protected Guard[] perms;
035
036    public Or(Collection<Guard> guards) {
037        this(guards.toArray(new Guard[guards.size()]));
038    }
039
040    public Or(Guard... guards) {
041        if (guards == null) {
042            throw new IllegalArgumentException("Argument cannot be null");
043        }
044        perms = guards;
045    }
046
047    public boolean check(Adaptable context) {
048        for (Guard perm : perms) {
049            if (perm.check(context)) {
050                return true;
051            }
052        }
053        return false;
054    }
055
056    @Override
057    public String toString() {
058        StringBuilder buf = new StringBuilder();
059        if (perms == null) {
060            return " [OR] ";
061        }
062        buf.append('(').append(perms[0]);
063        for (int i = 1; i < perms.length; i++) {
064            buf.append(" OR ").append(perms[i]);
065        }
066        return buf.append(')').toString();
067    }
068}