package org.drools.objenesis.strategy;
import java.io.NotSerializableException;
import java.io.Serializable;
import org.drools.objenesis.ObjenesisException;
import org.drools.objenesis.instantiator.ObjectInstantiator;
import org.drools.objenesis.instantiator.basic.ObjectStreamClassInstantiator;
import org.drools.objenesis.instantiator.gcj.GCJSerializationInstantiator;
import org.drools.objenesis.instantiator.sun.Sun13SerializationInstantiator;
/**
* 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
* <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.
*
* @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(final Class type) {
if ( !Serializable.class.isAssignableFrom( type ) ) {
throw new ObjenesisException( new NotSerializableException( type + " not serializable" ) );
}
if ( JVM_NAME.startsWith( SUN ) ) {
if ( VM_VERSION.startsWith( "1.3" ) ) {
return new Sun13SerializationInstantiator( type );
}
} else if ( JVM_NAME.startsWith( GNU ) ) {
return new GCJSerializationInstantiator( type );
}
return new ObjectStreamClassInstantiator( type );
}
}