org.springframework.objenesis.instantiator.android.Android10Instantiator 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.android;
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;
/**
* Instantiator for Android API level 10 and lover which creates objects without driving their
* constructors, using internal methods on the Dalvik implementation of
* {@link java.io.ObjectInputStream}.
*
* @author Piotr 'Qertoip' W??odarek
*/
@Instantiator(Typology.STANDARD)
public class Android10Instantiator implements ObjectInstantiator {
private final Class type;
private final Method newStaticMethod;
public Android10Instantiator(Class type) {
this.type = type;
newStaticMethod = getNewStaticMethod();
}
public T newInstance() {
try {
return type.cast(newStaticMethod.invoke(null, type, Object.class));
}
catch(Exception e) {
throw new ObjenesisException(e);
}
}
private static Method getNewStaticMethod() {
try {
Method newStaticMethod = ObjectInputStream.class.getDeclaredMethod(
"newInstance", Class.class, Class.class);
newStaticMethod.setAccessible(true);
return newStaticMethod;
}
catch(RuntimeException | NoSuchMethodException e) {
throw new ObjenesisException(e);
}
}
}