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.ecm.platform.query.core;
020
021import java.util.HashMap;
022import java.util.Map;
023
024import org.apache.commons.logging.Log;
025import org.apache.commons.logging.LogFactory;
026import org.nuxeo.ecm.platform.query.api.PageProviderDefinition;
027import org.nuxeo.runtime.model.ContributionFragmentRegistry;
028
029/**
030 * Registry for page provider contributions.
031 *
032 * @since 5.6
033 */
034public class PageProviderRegistry extends ContributionFragmentRegistry<PageProviderDefinition> {
035
036    private static final Log log = LogFactory.getLog(PageProviderRegistry.class);
037
038    protected Map<String, PageProviderDefinition> providers = new HashMap<String, PageProviderDefinition>();
039
040    @Override
041    public String getContributionId(PageProviderDefinition contrib) {
042        return contrib.getName();
043    }
044
045    @Override
046    public void contributionUpdated(String id, PageProviderDefinition desc, PageProviderDefinition newOrigContrib) {
047        String name = desc.getName();
048        if (name == null) {
049            log.error("Cannot register page provider without a name");
050            return;
051        }
052        boolean enabled = desc.isEnabled();
053        if (enabled) {
054            log.info("Registering page provider with name " + name);
055            providers.put(name, desc);
056        } else {
057            contributionRemoved(id, desc);
058        }
059    }
060
061    @Override
062    public void contributionRemoved(String id, PageProviderDefinition origContrib) {
063        providers.remove(id);
064        log.info("Unregistering page provider with name " + id);
065    }
066
067    @Override
068    public boolean isSupportingMerge() {
069        return false;
070    }
071
072    @Override
073    public PageProviderDefinition clone(PageProviderDefinition orig) {
074        throw new UnsupportedOperationException();
075    }
076
077    @Override
078    public void merge(PageProviderDefinition src, PageProviderDefinition dst) {
079        throw new UnsupportedOperationException();
080    }
081
082    // API
083
084    public PageProviderDefinition getPageProvider(String id) {
085        return providers.get(id);
086    }
087
088}