001 /**
002 * GRANITE DATA SERVICES
003 * Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004 *
005 * This file is part of the Granite Data Services Platform.
006 *
007 * Granite Data Services is free software; you can redistribute it and/or
008 * modify it under the terms of the GNU Lesser General Public
009 * License as published by the Free Software Foundation; either
010 * version 2.1 of the License, or (at your option) any later version.
011 *
012 * Granite Data Services is distributed in the hope that it will be useful,
013 * but WITHOUT ANY WARRANTY; without even the implied warranty of
014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
015 * General Public License for more details.
016 *
017 * You should have received a copy of the GNU Lesser General Public
018 * License along with this library; if not, write to the Free Software
019 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
020 * USA, or see <http://www.gnu.org/licenses/>.
021 */
022 package org.granite.tide.cdi;
023
024 import java.lang.annotation.Annotation;
025 import java.util.HashSet;
026 import java.util.Set;
027
028 import javax.enterprise.context.spi.CreationalContext;
029 import javax.enterprise.inject.spi.Bean;
030 import javax.enterprise.inject.spi.BeanManager;
031 import javax.servlet.ServletContext;
032
033 import org.granite.cdi.CDIUtils;
034 import org.granite.cdi.GravityFactory;
035 import org.granite.config.ConfigProvider;
036 import org.granite.gravity.Gravity;
037 import org.granite.logging.Logger;
038 import org.granite.messaging.service.ServiceFactory;
039
040
041 public class CDIConfigProvider implements ConfigProvider {
042
043 private static final Logger log = Logger.getLogger(CDIConfigProvider.class);
044
045 protected BeanManager beanManager;
046
047 public CDIConfigProvider(ServletContext servletContext) {
048 beanManager = CDIUtils.lookupBeanManager(servletContext);
049 }
050
051 public Boolean useTide() {
052 return true;
053 }
054
055 public String getType() {
056 return "server";
057 }
058
059 public Class<? extends ServiceFactory> getFactoryClass() {
060 return CDIServiceFactory.class;
061 }
062
063 @SuppressWarnings("unchecked")
064 public <T> T findInstance(Class<T> type) {
065 Set<Bean<?>> beans = beanManager.getBeans(type);
066 if (beans.size() == 1) {
067 Bean<?> bean = beans.iterator().next();
068 CreationalContext<?> cc = beanManager.createCreationalContext(bean);
069 return (T)beanManager.getReference(bean, type, cc);
070 }
071 return null;
072 }
073
074 @SuppressWarnings("unchecked")
075 public <T> Set<T> findInstances(Class<T> type) {
076 Set<Bean<?>> beans = beanManager.getBeans(type);
077 Set<T> instances = new HashSet<T>(beans.size());
078 for (Bean<?> bean : beans) {
079 CreationalContext<?> cc = beanManager.createCreationalContext(bean);
080 instances.add((T)beanManager.getReference(bean, type, cc));
081 }
082 return instances;
083 }
084
085 public Class<?>[] getTideInterfaces() {
086 return new Class<?>[] { Identity.class };
087 }
088
089 @SuppressWarnings("unchecked")
090 public Class<? extends Annotation>[] getTideAnnotations() {
091 return new Class[0];
092 }
093
094 @Override
095 public void initGravity(Gravity gravity) {
096 GravityFactory gravityFactory = findInstance(GravityFactory.class);
097 gravityFactory.setGravity(gravity);
098 log.info("Registered Gravity bean");
099 }
100 }