| /** |
| * 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.strategy; |
| |
| import org.objenesis.instantiator.ObjectInstantiator; |
| import org.objenesis.instantiator.android.AndroidInstantiator; |
| import org.objenesis.instantiator.gcj.GCJInstantiator; |
| import org.objenesis.instantiator.jrockit.JRockit131Instantiator; |
| import org.objenesis.instantiator.jrockit.JRockitLegacyInstantiator; |
| import org.objenesis.instantiator.perc.PercInstantiator; |
| import org.objenesis.instantiator.sun.Sun13Instantiator; |
| import org.objenesis.instantiator.sun.SunReflectionFactoryInstantiator; |
| |
| /** |
| * Guess the best instantiator for a given class. The instantiator will instantiate the class |
| * without calling any constructor. Currently, the selection doesn't depend on the class. It relies |
| * on the |
| * <ul> |
| * <li>JVM version</li> |
| * <li>JVM vendor</li> |
| * <li>JVM vendor version</li> |
| * </ul> |
| * However, instantiators are stateful and so dedicated to their class. |
| * |
| * @author Henri Tremblay |
| * @see ObjectInstantiator |
| */ |
| public class StdInstantiatorStrategy extends BaseInstantiatorStrategy { |
| |
| /** |
| * Return an {@link ObjectInstantiator} allowing to create instance without any constructor being |
| * called. |
| * |
| * @param type Class to instantiate |
| * @return The ObjectInstantiator for the class |
| */ |
| public ObjectInstantiator newInstantiatorOf(Class type) { |
| |
| if(JVM_NAME.startsWith(SUN)) { |
| if(VM_VERSION.startsWith("1.3")) { |
| return new Sun13Instantiator(type); |
| } |
| } |
| else if(JVM_NAME.startsWith(JROCKIT)) { |
| if(VM_VERSION.startsWith("1.3")) { |
| return new JRockit131Instantiator(type); |
| } |
| else if(VM_VERSION.startsWith("1.4")) { |
| // JRockit vendor version will be RXX where XX is the version |
| // Versions prior to 26 need special handling |
| // From R26 on, java.vm.version starts with R |
| if(!VENDOR_VERSION.startsWith("R")) { |
| // On R25.1 and R25.2, ReflectionFactory should work. Otherwise, we must use the |
| // Legacy instantiator. |
| if(VM_INFO == null || !VM_INFO.startsWith("R25.1") || !VM_INFO.startsWith("R25.2")) { |
| return new JRockitLegacyInstantiator(type); |
| } |
| } |
| } |
| } |
| else if(JVM_NAME.startsWith(DALVIK)) { |
| return new AndroidInstantiator(type); |
| } |
| else if(JVM_NAME.startsWith(GNU)) { |
| return new GCJInstantiator(type); |
| } |
| else if(JVM_NAME.startsWith(PERC)) { |
| return new PercInstantiator(type); |
| } |
| |
| // Fallback instantiator, should work with: |
| // - Java Hotspot version 1.4 and higher |
| // - JRockit 1.4-R26 and higher |
| // - IBM and Hitachi JVMs |
| // ... might works for others so we just give it a try |
| return new SunReflectionFactoryInstantiator(type); |
| } |
| } |