001/*
002 * (C) Copyright 2006-2011 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 *     Nuxeo - initial API and implementation
018 *
019 * $Id$
020 */
021
022package org.nuxeo.osgi;
023
024import java.util.HashSet;
025import java.util.Set;
026
027/**
028 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
029 */
030public class BundleRegistration {
031
032    protected final BundleImpl bundle;
033
034    // XXX: explain why these three variables are lazily instantiated.
035    protected final Set<String> dependsOn = new HashSet<String>();
036
037    protected final Set<String> dependsOnMe = new HashSet<String>();
038
039    protected final Set<String> waitingFor = new HashSet<String>();
040
041    protected final Set<String> extendsMe = new HashSet<String>();
042
043    public BundleRegistration(BundleImpl bundle) {
044        this.bundle = bundle;
045    }
046
047    public void addFragment(String name) {
048        extendsMe.add(name);
049    }
050
051    public void addDependency(String name) {
052        dependsOn.add(name);
053    }
054
055    public void addDependent(String name) {
056        dependsOnMe.add(name);
057    }
058
059    public void addUnresolvedDependency(String name) {
060        waitingFor.add(name);
061    }
062
063    public void removeUnresolvedDependency(String name) {
064        waitingFor.remove(name);
065    }
066
067    public boolean hasUnresolvedDependencies() {
068        return !waitingFor.isEmpty();
069    }
070
071}