| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.felix.dm.itest.api; |
| |
| import org.apache.felix.dm.Component; |
| import org.apache.felix.dm.DependencyManager; |
| import org.apache.felix.dm.itest.util.Ensure; |
| import org.apache.felix.dm.itest.util.TestBase; |
| import org.junit.Assert; |
| import org.osgi.framework.Bundle; |
| |
| /** |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| public class FELIX5630_NullObjectTest extends TestBase { |
| |
| private final static String BSN = "org.apache.felix.metatype"; |
| |
| /** |
| * scenario: |
| * |
| * - A requires B,C. |
| * - A,B,C are started |
| * - B,A,C are stopped |
| * - A is restarted: at this point A has a bug: it is injected with a null object for B ! |
| */ |
| public void testRequiredServiceDependency() { |
| DependencyManager manager = getDM(); |
| |
| Component aComponent = manager.createComponent().setInterface(A.class.getName(), null).setImplementation(new A()); |
| aComponent.add(manager.createServiceDependency().setService(B.class).setRequired(true)); |
| aComponent.add(manager.createServiceDependency().setService(C.class).setRequired(true)); |
| |
| Component bComponent = manager.createComponent().setInterface(B.class.getName(), null).setImplementation(new B()); |
| Component cComponent = manager.createComponent().setInterface(C.class.getName(), null).setImplementation(new C()); |
| |
| manager.add(bComponent); |
| manager.add(aComponent); |
| manager.add(cComponent); |
| |
| manager.remove(aComponent); |
| manager.remove(bComponent); |
| manager.add(aComponent); //throws Could not create null object for |
| |
| manager.clear(); |
| } |
| |
| /** |
| * - A requires bundle B, which is started |
| * - A started |
| * - A stopped |
| * - B stopped |
| * - A is restarted: at this point A has a bug: it is injected with a null object for the bundle dependency over B |
| */ |
| public void testRequiredBundleDependency() { |
| DependencyManager m = getDM(); |
| |
| Ensure e = new Ensure(); |
| BundleConsumer bundleConsumerImpl = new BundleConsumer(e); |
| Component bundleConsumer = m.createComponent() |
| .setImplementation(bundleConsumerImpl) |
| .add(m.createBundleDependency() |
| .setRequired(true) |
| .setFilter("(Bundle-SymbolicName=" + BSN + ")") |
| .setStateMask( Bundle.ACTIVE)); |
| // add a bundle consumer with a filter |
| m.add(bundleConsumer); |
| e.waitForStep(1, 5000); |
| // remove bundle consumer |
| m.remove(bundleConsumer); |
| e.waitForStep(2, 5000); |
| // stop the metatype bundle |
| stopBundle(BSN); |
| // add the bundle consumer again, which must *not* be started |
| m.add(bundleConsumer); |
| Assert.assertFalse(bundleConsumerImpl.isStarted()); |
| startBundle(BSN); |
| } |
| |
| |
| private class A { |
| @SuppressWarnings("unused") |
| public void init() { |
| System.out.println("init"); |
| } |
| |
| @SuppressWarnings("unused") |
| public void start() { |
| System.out.println("start"); |
| } |
| |
| @SuppressWarnings("unused") |
| public void stop() { |
| System.out.println("stop"); |
| } |
| |
| @SuppressWarnings("unused") |
| public void destroy() { |
| System.out.println("destroy"); |
| } |
| } |
| |
| private class B { |
| |
| } |
| |
| private class C { |
| |
| } |
| |
| static class BundleConsumer { |
| private final Ensure m_ensure; |
| volatile Bundle m_bundle; |
| private volatile boolean m_started; |
| |
| public BundleConsumer(Ensure e) { |
| m_ensure = e; |
| } |
| |
| public boolean isStarted() { |
| return m_started; |
| } |
| |
| public void start() { |
| m_started = true; |
| if (m_bundle != null && m_bundle.getSymbolicName() != null && m_bundle.getSymbolicName().equals(BSN)) { |
| m_ensure.step(); |
| } |
| } |
| |
| public void stop() { |
| m_started = false; |
| if (m_bundle != null && m_bundle.getSymbolicName().equals(BSN)) { |
| m_ensure.step(); |
| } |
| } |
| } |
| |
| } |