org.springframework.objenesis.strategy.SerializingInstantiatorStrategy Maven / Gradle / Ivy
/*
* Copyright 2006-2021 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.springframework.objenesis.strategy;
import java.io.NotSerializableException;
import java.io.Serializable;
import org.springframework.objenesis.ObjenesisException;
import org.springframework.objenesis.instantiator.ObjectInstantiator;
import org.springframework.objenesis.instantiator.android.AndroidSerializationInstantiator;
import org.springframework.objenesis.instantiator.basic.ObjectInputStreamInstantiator;
import org.springframework.objenesis.instantiator.basic.ObjectStreamClassInstantiator;
import org.springframework.objenesis.instantiator.gcj.GCJSerializationInstantiator;
import org.springframework.objenesis.instantiator.perc.PercSerializationInstantiator;
import org.springframework.objenesis.instantiator.sun.SunReflectionFactorySerializationInstantiator;
import static org.springframework.objenesis.strategy.PlatformDescription.*;
/**
* Guess the best serializing instantiator for a given class. The returned instantiator will
* instantiate classes like the genuine java serialization framework (the constructor of the first
* not serializable class will be called). Currently, the selection doesn't depend on the class. It
* relies on the
*
* - JVM version
* - JVM vendor
* - JVM vendor version
*
* However, instantiators are stateful and so dedicated to their class.
*
* @author Henri Tremblay
* @see ObjectInstantiator
*/
public class SerializingInstantiatorStrategy extends BaseInstantiatorStrategy {
/**
* Return an {@link ObjectInstantiator} allowing to create instance following the java
* serialization framework specifications.
*
* @param type Class to instantiate
* @return The ObjectInstantiator for the class
*/
public ObjectInstantiator newInstantiatorOf(Class type) {
if(!Serializable.class.isAssignableFrom(type)) {
throw new ObjenesisException(new NotSerializableException(type+" not serializable"));
}
if(JVM_NAME.startsWith(HOTSPOT) || PlatformDescription.isThisJVM(OPENJDK)) {
// Java 7 GAE was under a security manager so we use a degraded system
if(isGoogleAppEngine() && PlatformDescription.SPECIFICATION_VERSION.equals("1.7")) {
return new ObjectInputStreamInstantiator<>(type);
}
return new SunReflectionFactorySerializationInstantiator<>(type);
}
else if(JVM_NAME.startsWith(DALVIK)) {
if(PlatformDescription.isAndroidOpenJDK()) {
return new ObjectStreamClassInstantiator<>(type);
}
return new AndroidSerializationInstantiator<>(type);
}
else if(JVM_NAME.startsWith(GNU)) {
return new GCJSerializationInstantiator<>(type);
}
else if(JVM_NAME.startsWith(PERC)) {
return new PercSerializationInstantiator<>(type);
}
return new SunReflectionFactorySerializationInstantiator<>(type);
}
}