001/*
002 * (C) Copyright 2006-2011 Nuxeo SA (http://nuxeo.com/) and contributors.
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 *     Nuxeo - initial API and implementation
018 *
019 * $Id$
020 */
021
022package org.nuxeo.common.utils;
023
024import java.util.ArrayList;
025
026/**
027 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
028 */
029public class PathFilterSet extends ArrayList<PathFilter> implements PathFilter {
030
031    private static final long serialVersionUID = -2967683005810353014L;
032
033    private boolean isExclusive = true;
034
035    public PathFilterSet() {
036
037    }
038
039    public PathFilterSet(boolean isExclusive) {
040        this.isExclusive = isExclusive;
041    }
042
043    public boolean isExclusive() {
044        return !isExclusive;
045    }
046
047    public boolean accept(Path path) {
048        int inclusive = 0;
049        boolean defaultValue = false;
050        for (PathFilter filter : this) {
051            boolean ret = filter.accept(path);
052            if (ret) {
053                if (!filter.isExclusive()) {
054                    inclusive++;
055                    defaultValue = true;
056                }
057            } else {
058                if (filter.isExclusive()) {
059                    return false;
060                } else {
061                    inclusive++;
062                }
063            }
064        }
065        return inclusive == 0 || defaultValue;
066    }
067
068}