org.springframework.objenesis.instantiator.perc.PercInstantiator 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.instantiator.perc;
import java.io.ObjectInputStream;
import java.lang.reflect.Method;
import org.springframework.objenesis.ObjenesisException;
import org.springframework.objenesis.instantiator.ObjectInstantiator;
import org.springframework.objenesis.instantiator.annotations.Instantiator;
import org.springframework.objenesis.instantiator.annotations.Typology;
/**
* Instantiates a class by making a call to internal Perc private methods. It is only supposed to
* work on Perc JVMs. This instantiator will not call any constructors. The code was provided by
* Aonix Perc support team.
*
* @author Henri Tremblay
* @see org.springframework.objenesis.instantiator.ObjectInstantiator
*/
@Instantiator(Typology.STANDARD)
public class PercInstantiator implements ObjectInstantiator {
private final Method newInstanceMethod;
private final Object[] typeArgs = new Object[] { null, Boolean.FALSE };
public PercInstantiator(Class type) {
typeArgs[0] = type;
try {
newInstanceMethod = ObjectInputStream.class.getDeclaredMethod("newInstance", Class.class,
Boolean.TYPE);
newInstanceMethod.setAccessible(true);
}
catch(RuntimeException | NoSuchMethodException e) {
throw new ObjenesisException(e);
}
}
@SuppressWarnings("unchecked")
public T newInstance() {
try {
return (T) newInstanceMethod.invoke(null, typeArgs);
} catch (Exception e) {
throw new ObjenesisException(e);
}
}
}