| /** |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.aries.cdi.container.internal.provider; |
| |
| import static java.util.Optional.ofNullable; |
| |
| import java.lang.annotation.Annotation; |
| import java.util.Collections; |
| import java.util.Iterator; |
| import java.util.Set; |
| |
| import javax.enterprise.inject.Instance; |
| import javax.enterprise.inject.spi.Bean; |
| import javax.enterprise.inject.spi.BeanManager; |
| import javax.enterprise.inject.spi.CDI; |
| import javax.enterprise.util.TypeLiteral; |
| |
| import org.apache.aries.cdi.container.internal.Activator; |
| import org.osgi.framework.Bundle; |
| import org.osgi.framework.BundleReference; |
| |
| public class CDIProvider implements javax.enterprise.inject.spi.CDIProvider { |
| |
| private static class CdiExtenderCDI extends CDI<Object> { |
| |
| @Override |
| public void destroy(Object instance) { |
| // NOOP |
| } |
| |
| @Override |
| public Object get() { |
| return this; |
| } |
| |
| @Override |
| public BeanManager getBeanManager() { |
| Bundle bundle = ofNullable( |
| Thread.currentThread().getContextClassLoader() |
| ).map(BundleReference.class::cast).map(BundleReference::getBundle).orElseThrow( |
| () -> new IllegalStateException( |
| "No Bundle found for Thread.ContextClassLoader " + Thread.currentThread()) |
| ); |
| |
| return ofNullable(Activator.get(bundle)).orElseThrow( |
| () -> new IllegalStateException("No BeanManager for bundle " + bundle) |
| ); |
| } |
| |
| @Override |
| public boolean isAmbiguous() { |
| return false; |
| } |
| |
| @Override |
| public boolean isUnsatisfied() { |
| return false; |
| } |
| |
| @Override |
| public Iterator<Object> iterator() { |
| return Collections.singleton((Object)this).iterator(); |
| } |
| |
| @Override |
| public Instance<Object> select(Annotation... qualifiers) { |
| return createInstance().select(qualifiers); |
| } |
| |
| @Override |
| public <U> Instance<U> select(Class<U> subtype, Annotation... qualifiers) { |
| return createInstance().select(subtype, qualifiers); |
| } |
| |
| @Override |
| public <U> Instance<U> select(TypeLiteral<U> subtype, Annotation... qualifiers) { |
| return createInstance().select(subtype, qualifiers); |
| } |
| |
| private Instance<Object> createInstance() { |
| BeanManager beanManager = getBeanManager(); |
| Set<Bean<?>> beans = beanManager.getBeans(Instance.class); |
| @SuppressWarnings("unchecked") |
| Bean<Instance<Object>> instanceBean = (Bean<Instance<Object>>)beanManager.resolve(beans); |
| Instance<Object> instance = instanceBean.create(beanManager.createCreationalContext(instanceBean)); |
| return instance; |
| } |
| |
| } |
| |
| private static final CDI<Object> _cdi = new CdiExtenderCDI(); |
| |
| @Override |
| public CDI<Object> getCDI() { |
| return _cdi; |
| } |
| |
| } |