001/*
002 * (C) Copyright 2012 Nuxeo SA (http://nuxeo.com/) and contributors.
003 *
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the GNU Lesser General Public License
006 * (LGPL) version 2.1 which accompanies this distribution, and is available at
007 * http://www.gnu.org/licenses/lgpl.html
008 *
009 * This library is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * Contributors:
015 *     Anahide Tchertchian
016 */
017package org.nuxeo.runtime.model;
018
019import java.util.HashMap;
020import java.util.Map;
021
022/**
023 * Simple contribution registry, keeping up to date contributions in a map, and not handling merge.
024 *
025 * @since 5.6
026 */
027public abstract class SimpleContributionRegistry<T> extends ContributionFragmentRegistry<T> {
028
029    protected Map<String, T> currentContribs = new HashMap<String, T>();
030
031    @Override
032    public void contributionUpdated(String id, T contrib, T newOrigContrib) {
033        currentContribs.put(id, contrib);
034    }
035
036    @Override
037    public void contributionRemoved(String id, T origContrib) {
038        currentContribs.remove(id);
039    }
040
041    @Override
042    public boolean isSupportingMerge() {
043        return false;
044    }
045
046    @Override
047    public T clone(T orig) {
048        throw new UnsupportedOperationException();
049    }
050
051    @Override
052    public void merge(T src, T dst) {
053        throw new UnsupportedOperationException();
054    }
055
056    protected T getCurrentContribution(String id) {
057        return currentContribs.get(id);
058    }
059
060}