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A library for instantiating Java objects
/**
* Copyright 2006-2015 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.instantiator;
import java.io.Serializable;
/**
* Helper for common serialization-compatible instantiation functions
*
* @author Leonardo Mesquita
*/
public class SerializationInstantiatorHelper {
/**
* Returns the first non-serializable superclass of a given class. According to Java Object
* Serialization Specification, objects read from a stream are initialized by calling an
* accessible no-arg constructor from the first non-serializable superclass in the object's
* hierarchy, allowing the state of non-serializable fields to be correctly initialized.
*
* @param Type to instantiate
* @param type Serializable class for which the first non-serializable superclass is to be found
* @return The first non-serializable superclass of 'type'.
* @see java.io.Serializable
*/
public static Class getNonSerializableSuperClass(Class type) {
Class result = type;
while(Serializable.class.isAssignableFrom(result)) {
result = result.getSuperclass();
if(result == null) {
throw new Error("Bad class hierarchy: No non-serializable parents");
}
}
return result;
}
}