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.ecm.platform.query.core;
018
019import java.util.HashMap;
020import java.util.Map;
021
022import org.apache.commons.logging.Log;
023import org.apache.commons.logging.LogFactory;
024import org.nuxeo.ecm.platform.query.api.PageProviderDefinition;
025import org.nuxeo.runtime.model.ContributionFragmentRegistry;
026
027/**
028 * Registry for page provider contributions.
029 *
030 * @since 5.6
031 */
032public class PageProviderRegistry extends ContributionFragmentRegistry<PageProviderDefinition> {
033
034    private static final Log log = LogFactory.getLog(PageProviderRegistry.class);
035
036    protected Map<String, PageProviderDefinition> providers = new HashMap<String, PageProviderDefinition>();
037
038    @Override
039    public String getContributionId(PageProviderDefinition contrib) {
040        return contrib.getName();
041    }
042
043    @Override
044    public void contributionUpdated(String id, PageProviderDefinition desc, PageProviderDefinition newOrigContrib) {
045        String name = desc.getName();
046        if (name == null) {
047            log.error("Cannot register page provider without a name");
048            return;
049        }
050        boolean enabled = desc.isEnabled();
051        if (enabled) {
052            log.info("Registering page provider with name " + name);
053            providers.put(name, desc);
054        } else {
055            contributionRemoved(id, desc);
056        }
057    }
058
059    @Override
060    public void contributionRemoved(String id, PageProviderDefinition origContrib) {
061        providers.remove(id);
062        log.info("Unregistering page provider with name " + id);
063    }
064
065    @Override
066    public boolean isSupportingMerge() {
067        return false;
068    }
069
070    @Override
071    public PageProviderDefinition clone(PageProviderDefinition orig) {
072        throw new UnsupportedOperationException();
073    }
074
075    @Override
076    public void merge(PageProviderDefinition src, PageProviderDefinition dst) {
077        throw new UnsupportedOperationException();
078    }
079
080    // API
081
082    public PageProviderDefinition getPageProvider(String id) {
083        return providers.get(id);
084    }
085
086}