001/*
002 * (C) Copyright 2012 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 *     Anahide Tchertchian
018 */
019package org.nuxeo.runtime.model;
020
021import java.util.HashMap;
022import java.util.Map;
023
024/**
025 * Simple contribution registry, keeping up to date contributions in a map, and not handling merge.
026 *
027 * @since 5.6
028 */
029public abstract class SimpleContributionRegistry<T> extends ContributionFragmentRegistry<T> {
030
031    protected Map<String, T> currentContribs = new HashMap<String, T>();
032
033    @Override
034    public void contributionUpdated(String id, T contrib, T newOrigContrib) {
035        currentContribs.put(id, contrib);
036    }
037
038    @Override
039    public void contributionRemoved(String id, T origContrib) {
040        currentContribs.remove(id);
041    }
042
043    @Override
044    public boolean isSupportingMerge() {
045        return false;
046    }
047
048    @Override
049    public T clone(T orig) {
050        throw new UnsupportedOperationException();
051    }
052
053    @Override
054    public void merge(T src, T dst) {
055        throw new UnsupportedOperationException();
056    }
057
058    protected T getCurrentContribution(String id) {
059        return currentContribs.get(id);
060    }
061
062}