001/* 002 * Copyright (c) 2006-2011 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * All rights reserved. This program and the accompanying materials 005 * are made available under the terms of the Eclipse Public License v1.0 006 * which accompanies this distribution, and is available at 007 * http://www.eclipse.org/legal/epl-v10.html 008 * 009 * Contributors: 010 * Nuxeo - initial API and implementation 011 * 012 * $Id$ 013 */ 014 015package org.nuxeo.ecm.core.api.adapter; 016 017import java.util.Collection; 018import java.util.Map; 019import java.util.concurrent.ConcurrentHashMap; 020 021import org.apache.commons.logging.Log; 022import org.apache.commons.logging.LogFactory; 023import org.nuxeo.runtime.model.ComponentContext; 024import org.nuxeo.runtime.model.ComponentInstance; 025import org.nuxeo.runtime.model.ComponentName; 026import org.nuxeo.runtime.model.DefaultComponent; 027 028/** 029 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a> 030 */ 031public class DocumentAdapterService extends DefaultComponent { 032 033 public static final ComponentName NAME = new ComponentName(ComponentName.DEFAULT_TYPE, 034 "org.nuxeo.ecm.core.api.DocumentAdapterService"); 035 036 private static final Log log = LogFactory.getLog(DocumentAdapterService.class); 037 038 /** 039 * Document adapters 040 */ 041 protected Map<Class<?>, DocumentAdapterDescriptor> adapters; 042 043 public DocumentAdapterDescriptor getAdapterDescriptor(Class<?> itf) { 044 return adapters.get(itf); 045 } 046 047 /** 048 * @since 5.7 049 */ 050 public DocumentAdapterDescriptor[] getAdapterDescriptors() { 051 Collection<DocumentAdapterDescriptor> values = adapters.values(); 052 return values.toArray(new DocumentAdapterDescriptor[values.size()]); 053 } 054 055 public void registerAdapterFactory(DocumentAdapterDescriptor dae) { 056 adapters.put(dae.getInterface(), dae); 057 log.info("Registered document adapter factory " + dae); 058 } 059 060 public void unregisterAdapterFactory(Class<?> itf) { 061 DocumentAdapterDescriptor dae = adapters.remove(itf); 062 if (dae != null) { 063 log.info("Unregistered document adapter factory: " + dae); 064 } 065 } 066 067 @Override 068 public void activate(ComponentContext context) { 069 adapters = new ConcurrentHashMap<Class<?>, DocumentAdapterDescriptor>(); 070 } 071 072 @Override 073 public void deactivate(ComponentContext context) { 074 adapters.clear(); 075 adapters = null; 076 } 077 078 @Override 079 public void registerContribution(Object contribution, String extensionPoint, ComponentInstance contributor) { 080 if (extensionPoint.equals("adapters")) { 081 DocumentAdapterDescriptor dae = (DocumentAdapterDescriptor) contribution; 082 registerAdapterFactory(dae); 083 } 084 } 085 086 @Override 087 public void unregisterContribution(Object contribution, String extensionPoint, ComponentInstance contributor) { 088 if (extensionPoint.equals("adapters")) { 089 DocumentAdapterDescriptor dae = (DocumentAdapterDescriptor) contribution; 090 unregisterAdapterFactory(dae.getInterface()); 091 } 092 } 093 094}