| /* |
| * 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.sling.adapter.internal; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNotNull; |
| import static org.junit.Assert.assertNull; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.util.Dictionary; |
| import java.util.Map; |
| |
| import org.apache.sling.adapter.Adaption; |
| import org.apache.sling.adapter.mock.MockAdapterFactory; |
| import org.apache.sling.api.adapter.AdapterFactory; |
| import org.apache.sling.api.adapter.SlingAdaptable; |
| import org.hamcrest.Matcher; |
| import org.hamcrest.core.IsAnything; |
| import org.jmock.Expectations; |
| import org.jmock.Mockery; |
| import org.jmock.integration.junit4.JMock; |
| import org.jmock.integration.junit4.JUnit4Mockery; |
| import org.junit.runner.RunWith; |
| import org.osgi.framework.Bundle; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.Constants; |
| import org.osgi.framework.Filter; |
| import org.osgi.framework.ServiceListener; |
| import org.osgi.framework.ServiceReference; |
| import org.osgi.service.component.ComponentContext; |
| import org.osgi.service.packageadmin.ExportedPackage; |
| import org.osgi.service.packageadmin.PackageAdmin; |
| |
| import junitx.util.PrivateAccessor; |
| |
| @RunWith(JMock.class) |
| public class AdapterManagerTest { |
| |
| private AdapterManagerImpl am; |
| |
| protected final Mockery context = new JUnit4Mockery(); |
| |
| @org.junit.Before public void setUp() throws Exception { |
| am = new AdapterManagerImpl(); |
| final PackageAdmin pa = this.context.mock(PackageAdmin.class); |
| final ExportedPackage ep = this.context.mock(ExportedPackage.class); |
| this.context.checking(new Expectations(){{ |
| allowing(pa).getExportedPackage(with(any(String.class))); |
| will(returnValue(ep)); |
| }}); |
| PrivateAccessor.setField(am, "packageAdmin", pa); |
| } |
| |
| @org.junit.After public void tearDown() { |
| am.deactivate(null); // not correct, but argument unused |
| } |
| |
| /** |
| * Helper method to create a mock bundle |
| */ |
| protected Bundle createBundle(String name) { |
| final Bundle bundle = this.context.mock(Bundle.class, name); |
| this.context.checking(new Expectations() {{ |
| allowing(bundle).getBundleId(); |
| will(returnValue(1L)); |
| }}); |
| return bundle; |
| } |
| |
| /** |
| * Helper method to create a mock component context |
| */ |
| protected ComponentContext createComponentContext() throws Exception { |
| final BundleContext bundleCtx = this.context.mock(BundleContext.class); |
| final Filter filter = this.context.mock(Filter.class); |
| final ComponentContext ctx = this.context.mock(ComponentContext.class); |
| this.context.checking(new Expectations() {{ |
| allowing(ctx).locateService(with(any(String.class)), with(any(ServiceReference.class))); |
| will(returnValue(new MockAdapterFactory())); |
| allowing(ctx).getBundleContext(); |
| will(returnValue(bundleCtx)); |
| allowing(bundleCtx).createFilter(with(any(String.class))); |
| will(returnValue(filter)); |
| allowing(bundleCtx).addServiceListener(with(any(ServiceListener.class)), with(any(String.class))); |
| allowing(bundleCtx).getServiceReferences(with(any(String.class)), with(any(String.class))); |
| will(returnValue(null)); |
| allowing(bundleCtx).removeServiceListener(with(any(ServiceListener.class))); |
| allowing(bundleCtx).registerService(with(Adaption.class), with(AdaptionImpl.INSTANCE), with(any(Dictionary.class))); |
| will(returnValue(null)); |
| }}); |
| return ctx; |
| } |
| |
| /** |
| * Helper method to create a mock component context |
| */ |
| protected ComponentContext createMultipleAdaptersComponentContext(final ServiceReference firstServiceReference, final ServiceReference secondServiceReference) throws Exception { |
| final BundleContext bundleCtx = this.context.mock(BundleContext.class); |
| final Filter filter = this.context.mock(Filter.class); |
| final ComponentContext ctx = this.context.mock(ComponentContext.class); |
| this.context.checking(new Expectations() {{ |
| allowing(ctx).locateService(with(any(String.class)), with(firstServiceReference)); |
| will(returnValue(new FirstImplementationAdapterFactory())); |
| allowing(ctx).locateService(with(any(String.class)), with(secondServiceReference)); |
| will(returnValue(new SecondImplementationAdapterFactory())); |
| allowing(ctx).getBundleContext(); |
| will(returnValue(bundleCtx)); |
| allowing(bundleCtx).createFilter(with(any(String.class))); |
| will(returnValue(filter)); |
| allowing(bundleCtx).addServiceListener(with(any(ServiceListener.class)), with(any(String.class))); |
| allowing(bundleCtx).getServiceReferences(with(any(String.class)), with(any(String.class))); |
| will(returnValue(null)); |
| allowing(bundleCtx).removeServiceListener(with(any(ServiceListener.class))); |
| allowing(bundleCtx).registerService(with(Adaption.class), with(AdaptionImpl.INSTANCE), with(any(Dictionary.class))); |
| will(returnValue(null)); |
| }}); |
| return ctx; |
| } |
| |
| public static <T> Matcher<T> any(Class<T> type) { |
| return new IsAnything<>(); |
| } |
| |
| /** |
| * Helper method to create a mock service reference |
| */ |
| protected ServiceReference createServiceReference() { |
| final ServiceReference ref = new ServiceReferenceImpl(1, new String[]{ TestSlingAdaptable.class.getName() }, new String[]{ITestAdapter.class.getName()}); |
| return ref; |
| } |
| |
| private static final class ServiceReferenceImpl implements ServiceReference { |
| |
| private int ranking; |
| private String[] adapters; |
| private String[] classes; |
| |
| public ServiceReferenceImpl(final int order, final String[] adapters, final String[] classes) { |
| this.ranking = order; |
| this.adapters = adapters; |
| this.classes = classes; |
| } |
| |
| @Override |
| public boolean isAssignableTo(Bundle bundle, String className) { |
| // TODO Auto-generated method stub |
| return false; |
| } |
| |
| @Override |
| public Bundle[] getUsingBundles() { |
| // TODO Auto-generated method stub |
| return null; |
| } |
| |
| @Override |
| public String[] getPropertyKeys() { |
| // TODO Auto-generated method stub |
| return null; |
| } |
| |
| @Override |
| public Object getProperty(String key) { |
| if ( key.equals(Constants.SERVICE_RANKING) ) { |
| return ranking; |
| } |
| if ( key.equals(AdapterFactory.ADAPTABLE_CLASSES) ) { |
| return adapters; |
| } |
| if ( key.equals(AdapterFactory.ADAPTER_CLASSES) ) { |
| return classes; |
| } |
| |
| return null; |
| } |
| |
| @Override |
| public Bundle getBundle() { |
| // TODO Auto-generated method stub |
| return null; |
| } |
| |
| @Override |
| public int compareTo(Object reference) { |
| Integer ranking1 = (Integer)getProperty(Constants.SERVICE_RANKING); |
| Integer ranking2 = (Integer)((ServiceReference)reference).getProperty(Constants.SERVICE_RANKING); |
| return ranking1.compareTo(ranking2); |
| } |
| }; |
| /** |
| * Helper method to create a mock service reference |
| */ |
| protected ServiceReference createServiceReference2() { |
| final ServiceReference ref = new ServiceReferenceImpl(2, new String[]{ TestSlingAdaptable2.class.getName() }, new String[]{TestAdapter.class.getName()}); |
| return ref; |
| } |
| |
| @org.junit.Test public void testUnitialized() { |
| assertNotNull("AdapterFactoryDescriptors must not be null", am.getFactories()); |
| assertTrue("AdapterFactoryDescriptors must be empty", am.getFactories().isEmpty()); |
| assertTrue("AdapterFactory cache must be empty", am.getFactoryCache().isEmpty()); |
| } |
| |
| @org.junit.Test public void testInitialized() throws Exception { |
| am.activate(this.createComponentContext()); |
| |
| assertNotNull("AdapterFactoryDescriptors must not be null", am.getFactories()); |
| assertTrue("AdapterFactoryDescriptors must be empty", am.getFactories().isEmpty()); |
| assertTrue("AdapterFactory cache must be empty", am.getFactoryCache().isEmpty()); |
| } |
| |
| @org.junit.Test public void testBindBeforeActivate() throws Exception { |
| final ServiceReference ref = createServiceReference(); |
| am.bindAdapterFactory(ref); |
| |
| // no cache and no factories yet |
| assertNotNull("AdapterFactoryDescriptors must not be null", am.getFactories()); |
| assertTrue("AdapterFactoryDescriptors must be empty", am.getFactories().isEmpty()); |
| assertTrue("AdapterFactory cache must be empty", am.getFactoryCache().isEmpty()); |
| |
| am.activate(this.createComponentContext()); |
| |
| // expect the factory, but cache is empty |
| assertNotNull("AdapterFactoryDescriptors must not be null", am.getFactories()); |
| assertEquals("AdapterFactoryDescriptors must contain one entry", 1, am.getFactories().size()); |
| assertTrue("AdapterFactory cache must be empty", am.getFactoryCache().isEmpty()); |
| } |
| |
| @org.junit.Test public void testBindAfterActivate() throws Exception { |
| am.activate(this.createComponentContext()); |
| |
| // no cache and no factories yet |
| assertNotNull("AdapterFactoryDescriptors must not be null", am.getFactories()); |
| assertTrue("AdapterFactoryDescriptors must be empty", am.getFactories().isEmpty()); |
| assertTrue("AdapterFactory cache must be empty", am.getFactoryCache().isEmpty()); |
| |
| final ServiceReference ref = createServiceReference(); |
| am.bindAdapterFactory(ref); |
| |
| // expect the factory, but cache is empty |
| assertNotNull("AdapterFactoryDescriptors must not be null", am.getFactories()); |
| assertEquals("AdapterFactoryDescriptors must contain one entry", 1, am.getFactories().size()); |
| assertTrue("AdapterFactory cache must be empty", am.getFactoryCache().isEmpty()); |
| |
| Map<String, AdapterFactoryDescriptorMap> f = am.getFactories(); |
| AdapterFactoryDescriptorMap afdm = f.get(TestSlingAdaptable.class.getName()); |
| assertNotNull(afdm); |
| |
| AdapterFactoryDescriptor afd = afdm.get(ref); |
| assertNotNull(afd); |
| assertNotNull(afd.getFactory()); |
| assertNotNull(afd.getAdapters()); |
| assertEquals(1, afd.getAdapters().length); |
| assertEquals(ITestAdapter.class.getName(), afd.getAdapters()[0]); |
| |
| assertNull(f.get(TestSlingAdaptable2.class.getName())); |
| } |
| |
| @org.junit.Test public void testAdaptBase() throws Exception { |
| am.activate(this.createComponentContext()); |
| |
| TestSlingAdaptable data = new TestSlingAdaptable(); |
| assertNull("Expect no adapter", am.getAdapter(data, ITestAdapter.class)); |
| |
| final ServiceReference ref = createServiceReference(); |
| am.bindAdapterFactory(ref); |
| |
| Object adapter = am.getAdapter(data, ITestAdapter.class); |
| assertNotNull(adapter); |
| assertTrue(adapter instanceof ITestAdapter); |
| } |
| |
| @org.junit.Test public void testAdaptExtended() throws Exception { |
| am.activate(this.createComponentContext()); |
| |
| TestSlingAdaptable2 data = new TestSlingAdaptable2(); |
| assertNull("Expect no adapter", am.getAdapter(data, ITestAdapter.class)); |
| |
| final ServiceReference ref = createServiceReference(); |
| am.bindAdapterFactory(ref); |
| |
| Object adapter = am.getAdapter(data, ITestAdapter.class); |
| assertNotNull(adapter); |
| assertTrue(adapter instanceof ITestAdapter); |
| } |
| |
| @org.junit.Test public void testAdaptBase2() throws Exception { |
| am.activate(this.createComponentContext()); |
| |
| TestSlingAdaptable data = new TestSlingAdaptable(); |
| assertNull("Expect no adapter", am.getAdapter(data, ITestAdapter.class)); |
| |
| final ServiceReference ref = createServiceReference(); |
| am.bindAdapterFactory(ref); |
| |
| final ServiceReference ref2 = createServiceReference2(); |
| am.bindAdapterFactory(ref2); |
| |
| Object adapter = am.getAdapter(data, ITestAdapter.class); |
| assertNotNull(adapter); |
| assertTrue(adapter instanceof ITestAdapter); |
| } |
| |
| @org.junit.Test public void testAdaptExtended2() throws Exception { |
| am.activate(this.createComponentContext()); |
| |
| final ServiceReference ref = createServiceReference(); |
| am.bindAdapterFactory(ref); |
| |
| final ServiceReference ref2 = createServiceReference2(); |
| am.bindAdapterFactory(ref2); |
| |
| TestSlingAdaptable data = new TestSlingAdaptable(); |
| Object adapter = am.getAdapter(data, ITestAdapter.class); |
| assertNotNull(adapter); |
| assertTrue(adapter instanceof ITestAdapter); |
| adapter = am.getAdapter(data, TestAdapter.class); |
| assertNull(adapter); |
| |
| TestSlingAdaptable2 data2 = new TestSlingAdaptable2(); |
| adapter = am.getAdapter(data2, ITestAdapter.class); |
| assertNotNull(adapter); |
| assertTrue(adapter instanceof ITestAdapter); |
| adapter = am.getAdapter(data2, TestAdapter.class); |
| assertNotNull(adapter); |
| assertTrue(adapter instanceof TestAdapter); |
| } |
| |
| @org.junit.Test public void testAdaptMultipleAdapterFactories() throws Exception { |
| final ServiceReference firstAdaptable = new ServiceReferenceImpl(1, new String[]{AdapterObject.class.getName()}, new String[]{ ParentInterface.class.getName(), FirstImplementation.class.getName()}); |
| final ServiceReference secondAdaptable = new ServiceReferenceImpl(2, new String[]{ AdapterObject.class.getName() }, new String[]{ParentInterface.class.getName(), SecondImplementation.class.getName()}); |
| |
| am.activate(this.createMultipleAdaptersComponentContext(firstAdaptable, secondAdaptable)); |
| |
| AdapterObject first = new AdapterObject(Want.FIRST_IMPL); |
| assertNull("Expect no adapter", am.getAdapter(first, ParentInterface.class)); |
| |
| AdapterObject second = new AdapterObject(Want.SECOND_IMPL); |
| assertNull("Expect no adapter", am.getAdapter(second, ParentInterface.class)); |
| |
| am.bindAdapterFactory(firstAdaptable); |
| am.bindAdapterFactory(secondAdaptable); |
| |
| Object adapter = am.getAdapter(first, ParentInterface.class); |
| assertNotNull("Did not get an adapter back for first implementation, service ranking 1", adapter); |
| assertTrue("Did not get the correct adaptable back for first implementation, service ranking 1, ", adapter instanceof FirstImplementation); |
| |
| adapter = am.getAdapter(second, ParentInterface.class); |
| assertNotNull("Did not get an adapter back for second implementation, service ranking 2", adapter); |
| assertTrue("Did not get the correct adaptable back for second implementation, service ranking 2, ", adapter instanceof SecondImplementation); |
| |
| adapter = am.getAdapter(first, FirstImplementation.class); |
| assertNotNull("Did not get an adapter back for first implementation, service ranking 1", adapter); |
| assertTrue("Did not get the correct adaptable back for first implementation, service ranking 1, ", adapter instanceof FirstImplementation); |
| |
| adapter = am.getAdapter(second, SecondImplementation.class); |
| assertNotNull("Did not get an adapter back for second implementation, service ranking 2", adapter); |
| assertTrue("Did not get the correct adaptable back for second implementation, service ranking 2, ", adapter instanceof SecondImplementation); |
| } |
| |
| @org.junit.Test public void testAdaptMultipleAdapterFactoriesReverseOrder() throws Exception { |
| final ServiceReference firstAdaptable = new ServiceReferenceImpl(2, new String[]{AdapterObject.class.getName()}, new String[]{ ParentInterface.class.getName()}); |
| final ServiceReference secondAdaptable = new ServiceReferenceImpl(1, new String[]{AdapterObject.class.getName()}, new String[]{ ParentInterface.class.getName()}); |
| am.activate(this.createMultipleAdaptersComponentContext(firstAdaptable, secondAdaptable)); |
| |
| AdapterObject first = new AdapterObject(Want.FIRST_IMPL); |
| assertNull("Expect no adapter", am.getAdapter(first, ParentInterface.class)); |
| |
| AdapterObject second = new AdapterObject(Want.SECOND_IMPL); |
| assertNull("Expect no adapter", am.getAdapter(second, ParentInterface.class)); |
| |
| am.bindAdapterFactory(firstAdaptable); |
| am.bindAdapterFactory(secondAdaptable); |
| |
| Object adapter = am.getAdapter(first, ParentInterface.class); |
| assertNotNull("Did not get an adapter back for first implementation, service ranking 2", adapter); |
| assertTrue("Did not get the correct adaptable back for first implementation, service ranking 2, ", adapter instanceof FirstImplementation); |
| |
| } |
| |
| @org.junit.Test public void testAdaptMultipleAdapterFactoriesServiceRanking() throws Exception { |
| final ServiceReference firstAdaptable = new ServiceReferenceImpl(2, new String[]{AdapterObject.class.getName()}, new String[]{ ParentInterface.class.getName(), FirstImplementation.class.getName()}); |
| final ServiceReference secondAdaptable = new ServiceReferenceImpl(1, new String[]{ AdapterObject.class.getName() }, new String[]{ParentInterface.class.getName(), SecondImplementation.class.getName()}); |
| |
| am.activate(this.createMultipleAdaptersComponentContext(firstAdaptable, secondAdaptable)); |
| |
| AdapterObject first = new AdapterObject(Want.INDIFFERENT); |
| assertNull("Expect no adapter", am.getAdapter(first, ParentInterface.class)); |
| |
| AdapterObject second = new AdapterObject(Want.INDIFFERENT); |
| assertNull("Expect no adapter", am.getAdapter(second, ParentInterface.class)); |
| |
| am.bindAdapterFactory(firstAdaptable); |
| am.bindAdapterFactory(secondAdaptable); |
| |
| Object adapter = am.getAdapter(first, ParentInterface.class); |
| assertNotNull("Did not get an adapter back for first implementation (from ParentInterface), service ranking 2", adapter); |
| assertTrue("Did not get the correct adaptable back for first implementation, service ranking 2, ", adapter instanceof FirstImplementation); |
| |
| adapter = am.getAdapter(first, FirstImplementation.class); |
| assertNotNull("Did not get an adapter back for first implementation, service ranking 2", adapter); |
| assertTrue("Did not get the correct adaptable back for first implementation, service ranking 2, ", adapter instanceof FirstImplementation); |
| |
| adapter = am.getAdapter(second, SecondImplementation.class); |
| assertNotNull("Did not get an adapter back for second implementation, service ranking 1", adapter); |
| assertTrue("Did not get the correct adaptable back for second implementation, service ranking 1, ", adapter instanceof SecondImplementation); |
| } |
| |
| @org.junit.Test public void testAdaptMultipleAdapterFactoriesServiceRankingSecondHigherOrder() throws Exception { |
| final ServiceReference firstAdaptable = new ServiceReferenceImpl(1, new String[]{AdapterObject.class.getName()}, new String[]{ ParentInterface.class.getName(), FirstImplementation.class.getName()}); |
| final ServiceReference secondAdaptable = new ServiceReferenceImpl(2, new String[]{ AdapterObject.class.getName() }, new String[]{ParentInterface.class.getName(), SecondImplementation.class.getName()}); |
| |
| am.activate(this.createMultipleAdaptersComponentContext(firstAdaptable, secondAdaptable)); |
| |
| AdapterObject first = new AdapterObject(Want.INDIFFERENT); |
| assertNull("Expect no adapter", am.getAdapter(first, ParentInterface.class)); |
| |
| AdapterObject second = new AdapterObject(Want.INDIFFERENT); |
| assertNull("Expect no adapter", am.getAdapter(second, ParentInterface.class)); |
| |
| am.bindAdapterFactory(firstAdaptable); |
| am.bindAdapterFactory(secondAdaptable); |
| |
| Object adapter = am.getAdapter(first, ParentInterface.class); |
| assertNotNull("Did not get an adapter back for second implementation (from ParentInterface), service ranking 2", adapter); |
| assertTrue("Did not get the correct adaptable back for second implementation, service ranking 2, ", adapter instanceof SecondImplementation); |
| |
| adapter = am.getAdapter(first, FirstImplementation.class); |
| assertNotNull("Did not get an adapter back for first implementation, service ranking 2", adapter); |
| assertTrue("Did not get the correct adaptable back for first implementation, service ranking 2, ", adapter instanceof FirstImplementation); |
| |
| adapter = am.getAdapter(second, SecondImplementation.class); |
| assertNotNull("Did not get an adapter back for second implementation, service ranking 1", adapter); |
| assertTrue("Did not get the correct adaptable back for second implementation, service ranking 1, ", adapter instanceof SecondImplementation); |
| } |
| |
| @org.junit.Test public void testAdaptMultipleAdapterFactoriesServiceRankingReverse() throws Exception { |
| final ServiceReference firstAdaptable = new ServiceReferenceImpl(2, new String[]{AdapterObject.class.getName()}, new String[]{ ParentInterface.class.getName(), FirstImplementation.class.getName()}); |
| final ServiceReference secondAdaptable = new ServiceReferenceImpl(1, new String[]{ AdapterObject.class.getName() }, new String[]{ParentInterface.class.getName(), SecondImplementation.class.getName()}); |
| |
| am.activate(this.createMultipleAdaptersComponentContext(firstAdaptable, secondAdaptable)); |
| |
| AdapterObject first = new AdapterObject(Want.INDIFFERENT); |
| assertNull("Expect no adapter", am.getAdapter(first, ParentInterface.class)); |
| |
| AdapterObject second = new AdapterObject(Want.INDIFFERENT); |
| assertNull("Expect no adapter", am.getAdapter(second, ParentInterface.class)); |
| |
| // bind these in reverse order from the non-reverse test |
| am.bindAdapterFactory(secondAdaptable); |
| am.bindAdapterFactory(firstAdaptable); |
| |
| Object adapter = am.getAdapter(first, ParentInterface.class); |
| assertNotNull("Did not get an adapter back for first implementation (from ParentInterface), service ranking 2", adapter); |
| assertTrue("Did not get the correct adaptable back for first implementation, service ranking 2, ", adapter instanceof FirstImplementation); |
| |
| adapter = am.getAdapter(first, FirstImplementation.class); |
| assertNotNull("Did not get an adapter back for first implementation, service ranking 2", adapter); |
| assertTrue("Did not get the correct adaptable back for first implementation, service ranking 2, ", adapter instanceof FirstImplementation); |
| |
| adapter = am.getAdapter(second, SecondImplementation.class); |
| assertNotNull("Did not get an adapter back for second implementation, service ranking 1", adapter); |
| assertTrue("Did not get the correct adaptable back for second implementation, service ranking 1, ", adapter instanceof SecondImplementation); |
| } |
| |
| |
| //---------- Test Adaptable and Adapter Classes --------------------------- |
| |
| public static class TestSlingAdaptable extends SlingAdaptable { |
| |
| } |
| |
| public static class TestSlingAdaptable2 extends TestSlingAdaptable { |
| |
| } |
| |
| public static interface ITestAdapter { |
| |
| } |
| |
| public static class TestAdapter { |
| |
| } |
| |
| public class FirstImplementationAdapterFactory implements AdapterFactory { |
| |
| @Override |
| @SuppressWarnings("unchecked") |
| public <AdapterType> AdapterType getAdapter(Object adaptable, Class<AdapterType> type) { |
| if (adaptable instanceof AdapterObject) { |
| AdapterObject adapterObject = (AdapterObject) adaptable; |
| switch (adapterObject.getWhatWeWant()) { |
| case FIRST_IMPL: |
| case INDIFFERENT: |
| return (AdapterType) new FirstImplementation(); |
| case SECOND_IMPL: |
| return null; |
| } |
| } |
| throw new RuntimeException("Must pass the correct adaptable"); |
| } |
| } |
| |
| public class SecondImplementationAdapterFactory implements AdapterFactory { |
| |
| @Override |
| @SuppressWarnings("unchecked") |
| public <AdapterType> AdapterType getAdapter(Object adaptable, Class<AdapterType> type) { |
| if (adaptable instanceof AdapterObject) { |
| AdapterObject adapterObject = (AdapterObject) adaptable; |
| switch (adapterObject.getWhatWeWant()) { |
| case SECOND_IMPL: |
| case INDIFFERENT: |
| return (AdapterType) new SecondImplementation(); |
| case FIRST_IMPL: |
| return null; |
| } |
| } |
| throw new RuntimeException("Must pass the correct adaptable"); |
| } |
| } |
| |
| public static interface ParentInterface { |
| } |
| |
| public static class FirstImplementation implements ParentInterface { |
| } |
| |
| public static class SecondImplementation implements ParentInterface { |
| } |
| |
| public enum Want { |
| |
| /** |
| * Indicates we definitively want the "first implementation" adapter factory to execute the adapt |
| */ |
| FIRST_IMPL, |
| |
| /** |
| * Indicates we definitively want the "second implementation" adapter factory to execute the adapt |
| */ |
| SECOND_IMPL, |
| |
| /** |
| * Indicates we are indifferent to which factory is used to execute the adapt, used for testing service ranking |
| */ |
| INDIFFERENT |
| } |
| |
| public static class AdapterObject { |
| private Want whatWeWant; |
| |
| public AdapterObject(Want whatWeWant) { |
| this.whatWeWant = whatWeWant; |
| } |
| |
| public Want getWhatWeWant() { |
| return whatWeWant; |
| } |
| } |
| |
| } |