| /** |
| * Copyright 2006-2017 the original author or authors. |
| * |
| * 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.objenesis.tck.search; |
| |
| import org.objenesis.instantiator.ObjectInstantiator; |
| import org.objenesis.strategy.PlatformDescription; |
| import org.objenesis.tck.candidates.SerializableNoConstructor; |
| |
| import java.io.Serializable; |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.InvocationTargetException; |
| import java.util.Iterator; |
| import java.util.SortedSet; |
| |
| /** |
| * This class will try every available instantiator on the platform to see which works. |
| * |
| * @author Henri Tremblay |
| */ |
| public class SearchWorkingInstantiator implements Serializable { // implements Serializable just for the test |
| |
| private SearchWorkingInstantiatorListener listener; |
| |
| public static void main(String[] args) throws Exception { |
| System.out.println(); |
| System.out.println(PlatformDescription.describePlatform()); |
| System.out.println(); |
| |
| SearchWorkingInstantiator searchWorkingInstantiator = new SearchWorkingInstantiator(new SystemOutListener()); |
| searchWorkingInstantiator.searchForInstantiator(SerializableNoConstructor.class); |
| } |
| |
| public SearchWorkingInstantiator(SearchWorkingInstantiatorListener listener) { |
| this.listener = listener; |
| } |
| |
| public void searchForInstantiator(Class<?> toInstantiate) { |
| SortedSet<String> classes = ClassEnumerator.getClassesForPackage(ObjectInstantiator.class.getPackage()); |
| |
| for (Iterator<String> it = classes.iterator(); it.hasNext();) { |
| String className = it.next(); |
| |
| // Skip if inner class of isn't named like a instantiator |
| if(className.contains("$") || !className.endsWith("Instantiator")) { |
| continue; |
| } |
| |
| Class<?> c = null; |
| try { |
| c = Class.forName(className); |
| } |
| catch(Exception e) { |
| listener.instantiatorUnsupported(c, e); |
| continue; |
| } |
| |
| if(c.isInterface() || !ObjectInstantiator.class.isAssignableFrom(c)) { |
| continue; |
| } |
| |
| Constructor<?> constructor; |
| try { |
| constructor = c.getConstructor(Class.class); |
| } catch (NoSuchMethodException e) { |
| throw new RuntimeException(e); |
| } |
| |
| try { |
| ObjectInstantiator<?> instantiator = |
| (ObjectInstantiator<?>) constructor.newInstance(toInstantiate); |
| instantiator.newInstance(); |
| listener.instantiatorSupported(c); |
| } |
| catch(Exception e) { |
| Throwable t = (e instanceof InvocationTargetException) ? e.getCause() : e; |
| listener.instantiatorUnsupported(c, t); |
| } |
| } |
| } |
| } |