| /** |
| * 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.test.beans; |
| |
| import java.util.Collection; |
| import java.util.concurrent.Callable; |
| |
| import javax.enterprise.inject.Instance; |
| import javax.inject.Inject; |
| |
| import org.apache.aries.cdi.test.interfaces.BeanService; |
| import org.osgi.service.cdi.annotations.Component; |
| import org.osgi.service.cdi.annotations.Reference; |
| import org.osgi.service.cdi.annotations.Service; |
| |
| @Component |
| @Service({BeanService.class, Instance_Optional.class}) |
| @SuppressWarnings("rawtypes") |
| public class Instance_Optional implements BeanService<Callable<String>> { |
| |
| @Override |
| public String doSomething() { |
| int count = 0; |
| Collection<Callable> callables = _instance.get(); |
| for (Callable callable : callables) { |
| System.out.println(callable); |
| count++; |
| } |
| return String.valueOf(count); |
| } |
| |
| @Override |
| @SuppressWarnings("unchecked") |
| public Callable<String> get() { |
| Collection<Callable> iterator = _instance.get(); |
| return iterator.iterator().next(); |
| } |
| |
| @Inject |
| @Reference |
| Instance<Collection<Callable>> _instance; |
| |
| } |