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/** * Copyright 2006-2015 the original author or authors. *//from www .j a va 2s .co m * 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 <T> 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 <T> Class<? super T> getNonSerializableSuperClass(Class<T> type) { Class<? super T> 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; } }