001/*
002 * (C) Copyright 2013 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-2.1.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 *     dmetzler
016 */
017package org.nuxeo.ecm.automation.io.services;
018
019import org.nuxeo.ecm.automation.io.services.codec.CodecDescriptor;
020import org.nuxeo.ecm.automation.io.services.codec.ObjectCodecService;
021import org.nuxeo.ecm.webengine.JsonFactoryManager;
022import org.nuxeo.runtime.api.Framework;
023import org.nuxeo.runtime.model.ComponentContext;
024import org.nuxeo.runtime.model.ComponentInstance;
025import org.nuxeo.runtime.model.DefaultComponent;
026
027/**
028 * @since 5.7.3
029 */
030public class IOComponent extends DefaultComponent {
031
032    protected static final String XP_CODECS = "codecs";
033
034    private JsonFactoryManager jsonFactoryManager;
035
036    private ObjectCodecService codecs;
037
038    @Override
039    public void activate(ComponentContext context) {
040        jsonFactoryManager = Framework.getLocalService(JsonFactoryManager.class);
041        codecs = new ObjectCodecService(jsonFactoryManager.getJsonFactory());
042    }
043
044    @Override
045    public void registerContribution(Object contribution, String extensionPoint, ComponentInstance contributor) {
046        if (XP_CODECS.equals(extensionPoint)) {
047            CodecDescriptor codec = (CodecDescriptor) contribution;
048            codecs.addCodec(codec.newInstance());
049        }
050    }
051
052    @Override
053    public void unregisterContribution(Object contribution, String extensionPoint, ComponentInstance contributor) {
054        if (XP_CODECS.equals(extensionPoint)) {
055            CodecDescriptor codec = (CodecDescriptor) contribution;
056            codecs.removeCodec(codec.newInstance().getJavaType());
057        }
058    }
059
060    @Override
061    public <T> T getAdapter(Class<T> adapter) {
062        if (ObjectCodecService.class.isAssignableFrom(adapter)) {
063            return adapter.cast(codecs);
064        } else if (JsonFactoryManager.class.isAssignableFrom(adapter)) {
065            return adapter.cast(jsonFactoryManager);
066        }
067        return null;
068    }
069
070    @Override
071    public void applicationStarted(ComponentContext context) {
072        super.applicationStarted(context);
073        codecs.postInit();
074    }
075
076}