| /** |
| * Copyright 2006-2013 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.instantiator.android; |
| |
| import org.objenesis.ObjenesisException; |
| import org.objenesis.instantiator.ObjectInstantiator; |
| |
| import java.io.ObjectStreamClass; |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| |
| /** |
| * Instantiator for Android which creates objects without driving their constructors, using internal |
| * methods on the Dalvik implementation of {@link ObjectStreamClass}. |
| * |
| * @author Ian Parkinson (Google Inc.) |
| */ |
| public class AndroidInstantiator implements ObjectInstantiator { |
| private final Class type; |
| private final Method newInstanceMethod; |
| private final Integer objectConstructorId; |
| |
| public AndroidInstantiator(Class type) { |
| this.type = type; |
| newInstanceMethod = getNewInstanceMethod(); |
| objectConstructorId = findConstructorIdForJavaLangObjectConstructor(); |
| } |
| |
| public Object newInstance() { |
| try { |
| return newInstanceMethod.invoke(null, new Object[] {type, objectConstructorId}); |
| } |
| catch(Exception e) { |
| throw new ObjenesisException(e); |
| } |
| } |
| |
| private static Method getNewInstanceMethod() { |
| try { |
| Method newInstanceMethod = ObjectStreamClass.class.getDeclaredMethod( |
| "newInstance", new Class[] {Class.class, Integer.TYPE}); |
| newInstanceMethod.setAccessible(true); |
| return newInstanceMethod; |
| } |
| catch(RuntimeException e) { |
| throw new ObjenesisException(e); |
| } |
| catch(NoSuchMethodException e) { |
| throw new ObjenesisException(e); |
| } |
| } |
| |
| private static Integer findConstructorIdForJavaLangObjectConstructor() { |
| try { |
| Method newInstanceMethod = ObjectStreamClass.class.getDeclaredMethod( |
| "getConstructorId", new Class[] {Class.class}); |
| newInstanceMethod.setAccessible(true); |
| |
| return (Integer) newInstanceMethod.invoke(null, new Object[] {Object.class}); |
| } |
| catch(RuntimeException e) { |
| throw new ObjenesisException(e); |
| } |
| catch(NoSuchMethodException e) { |
| throw new ObjenesisException(e); |
| } |
| catch(IllegalAccessException e) { |
| throw new ObjenesisException(e); |
| } |
| catch(InvocationTargetException e) { |
| throw new ObjenesisException(e); |
| } |
| } |
| } |