Android Open Source - objenesis Android17 Instantiator






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License

The source code is released under:

Apache License

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Java Source Code

/**
 * Copyright 2006-2015 the original author or authors.
 *//from  ww  w.j  a  v  a  2  s  . c o  m
 * 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 java.io.ObjectStreamClass;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

import org.objenesis.ObjenesisException;
import org.objenesis.instantiator.ObjectInstantiator;

/**
 * Instantiator for Android API level 11 to 17 which creates objects without driving their
 * constructors, using internal methods on the Dalvik implementation of {@link ObjectStreamClass}.
 * 
 * @author Ian Parkinson (Google Inc.)
 */
public class Android17Instantiator<T> implements ObjectInstantiator<T> {
   private final Class<T> type;
   private final Method newInstanceMethod;
   private final Integer objectConstructorId;

   public Android17Instantiator(Class<T> type) {
      this.type = type;
      newInstanceMethod = getNewInstanceMethod();
      objectConstructorId = findConstructorIdForJavaLangObjectConstructor();
   }

   public T newInstance() {
      try {
         return type.cast(newInstanceMethod.invoke(null, type, objectConstructorId));
      }
      catch(Exception e) {
         throw new ObjenesisException(e);
      }
   }

   private static Method getNewInstanceMethod() {
      try {
         Method newInstanceMethod = ObjectStreamClass.class.getDeclaredMethod(
            "newInstance", 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", Class.class);
         newInstanceMethod.setAccessible(true);

         return (Integer) newInstanceMethod.invoke(null, 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);
      }
   }
}




Java Source Code List

org.objenesis.ObjenesisBase.java
org.objenesis.ObjenesisException.java
org.objenesis.ObjenesisHelper.java
org.objenesis.ObjenesisSerializer.java
org.objenesis.ObjenesisStd.java
org.objenesis.Objenesis.java
org.objenesis.benchmark.ConcurrentGetInstantiator.java
org.objenesis.benchmark.CreateObject.java
org.objenesis.instantiator.ObjectInstantiator.java
org.objenesis.instantiator.SerializationInstantiatorHelper.java
org.objenesis.instantiator.android.Android10Instantiator.java
org.objenesis.instantiator.android.Android17Instantiator.java
org.objenesis.instantiator.android.Android18Instantiator.java
org.objenesis.instantiator.android.AndroidSerializationInstantiator.java
org.objenesis.instantiator.basic.AccessibleInstantiator.java
org.objenesis.instantiator.basic.ConstructorInstantiator.java
org.objenesis.instantiator.basic.FailingInstantiator.java
org.objenesis.instantiator.basic.NewInstanceInstantiator.java
org.objenesis.instantiator.basic.NullInstantiator.java
org.objenesis.instantiator.basic.ObjectInputStreamInstantiator.java
org.objenesis.instantiator.basic.ObjectStreamClassInstantiator.java
org.objenesis.instantiator.gcj.GCJInstantiatorBase.java
org.objenesis.instantiator.gcj.GCJInstantiator.java
org.objenesis.instantiator.gcj.GCJSerializationInstantiator.java
org.objenesis.instantiator.jrockit.JRockitLegacyInstantiator.java
org.objenesis.instantiator.perc.PercInstantiator.java
org.objenesis.instantiator.perc.PercSerializationInstantiator.java
org.objenesis.instantiator.sun.SunReflectionFactoryHelper.java
org.objenesis.instantiator.sun.SunReflectionFactoryInstantiator.java
org.objenesis.instantiator.sun.SunReflectionFactorySerializationInstantiator.java
org.objenesis.instantiator.sun.UnsafeFactoryInstantiator.java
org.objenesis.strategy.BaseInstantiatorStrategy.java
org.objenesis.strategy.InstantiatorStrategy.java
org.objenesis.strategy.PlatformDescription.java
org.objenesis.strategy.SerializingInstantiatorStrategy.java
org.objenesis.strategy.SingleInstantiatorStrategy.java
org.objenesis.strategy.StdInstantiatorStrategy.java
org.objenesis.tck.CandidateLoader.java
org.objenesis.tck.Main.java
org.objenesis.tck.Reporter.java
org.objenesis.tck.TCK.java
org.objenesis.tck.TextReporter.java
org.objenesis.tck.android.ObjenesisTest.java
org.objenesis.tck.android.TckInstrumentation.java
org.objenesis.tck.candidates.ConstructorThrowingException.java
org.objenesis.tck.candidates.ConstructorWithArguments.java
org.objenesis.tck.candidates.ConstructorWithMandatoryArguments.java
org.objenesis.tck.candidates.DefaultPackageConstructor.java
org.objenesis.tck.candidates.DefaultPrivateConstructor.java
org.objenesis.tck.candidates.DefaultProtectedConstructor.java
org.objenesis.tck.candidates.DefaultPublicConstructor.java
org.objenesis.tck.candidates.NoConstructor.java
org.objenesis.tck.candidates.SerializableConstructorThrowingException.java
org.objenesis.tck.candidates.SerializableConstructorWithArguments.java
org.objenesis.tck.candidates.SerializableConstructorWithMandatoryArguments.java
org.objenesis.tck.candidates.SerializableDefaultPackageConstructor.java
org.objenesis.tck.candidates.SerializableDefaultPrivateConstructor.java
org.objenesis.tck.candidates.SerializableDefaultProtectedConstructor.java
org.objenesis.tck.candidates.SerializableDefaultPublicConstructor.java
org.objenesis.tck.candidates.SerializableNoConstructor.java
org.objenesis.tck.candidates.SerializableReplacer.java
org.objenesis.tck.candidates.SerializableResolver.java
org.objenesis.tck.candidates.SerializableWithAncestorThrowingException.java