| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.directmemory.lightning.internal.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 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; |
| |
| } |
| } |