001/* 002 * GWTEventService 003 * Copyright (c) 2011 and beyond, strawbill UG (haftungsbeschr?nkt) 004 * 005 * This is free software; you can redistribute it and/or modify it 006 * under the terms of the GNU Lesser General Public License as 007 * published by the Free Software Foundation; either version 3 of 008 * the License, or (at your option) any later version. 009 * Other licensing for GWTEventService may also be possible on request. 010 * Please view the license.txt of the project for more information. 011 * 012 * This software is distributed in the hope that it will be useful, 013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 015 * Lesser General Public License for more details. 016 * 017 * You should have received a copy of the GNU Lesser General Public 018 * License along with this software; if not, write to the Free 019 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 020 * 02110-1301 USA, or see the FSF site: http://www.fsf.org. 021 */ 022package de.novanic.eventservice.service.connection.strategy.connector.streaming; 023 024import java.io.Serializable; 025 026import com.google.gwt.user.client.rpc.IsSerializable; 027import com.google.gwt.user.client.rpc.SerializationException; 028import com.google.gwt.user.server.rpc.SerializationPolicy; 029import com.google.gwt.user.server.rpc.impl.SerializabilityUtil; 030 031/** 032 * The {@link de.novanic.eventservice.service.connection.strategy.connector.streaming.EventSerializationPolicy} is required 033 * to serialize events (could implement IsSerializable or Serializable). 034 * 035 * @author sstrohschein 036 * <br>Date: 16.03.2010 037 * <br>Time: 23:14:40 038 */ 039public class EventSerializationPolicy extends SerializationPolicy 040{ 041 /** 042 * Returns true when the class is serializable (see {@link de.novanic.eventservice.service.connection.strategy.connector.streaming.EventSerializationPolicy#isValid(Class)}). 043 * @param aClass class to check 044 * @return true when the class is serializable (see {@link de.novanic.eventservice.service.connection.strategy.connector.streaming.EventSerializationPolicy#isValid(Class)}). 045 */ 046 public boolean shouldDeserializeFields(Class<?> aClass) { 047 return isValid(aClass); 048 } 049 050 /** 051 * Returns true when the class is serializable (see {@link de.novanic.eventservice.service.connection.strategy.connector.streaming.EventSerializationPolicy#isValid(Class)}). 052 * @param aClass class to check 053 * @return true when the class is serializable (see {@link de.novanic.eventservice.service.connection.strategy.connector.streaming.EventSerializationPolicy#isValid(Class)}). 054 */ 055 public boolean shouldSerializeFields(Class<?> aClass) { 056 return isValid(aClass); 057 } 058 059 /** 060 * There is no implementation of that method for {@link de.novanic.eventservice.service.connection.strategy.connector.streaming.EventSerializationPolicy} 061 * @param aClass class to check 062 * @throws SerializationException 063 */ 064 public void validateDeserialize(Class<?> aClass) throws SerializationException {} 065 066 /** 067 * There is no implementation of that method for {@link de.novanic.eventservice.service.connection.strategy.connector.streaming.EventSerializationPolicy} 068 * @param aClass class to check 069 * @throws SerializationException 070 */ 071 public void validateSerialize(Class<?> aClass) throws SerializationException {} 072 073 /** 074 * Checks if the class is serializable (when the class extends from IsSerializable or Serializable, has a custom field serializer, 075 * is a primitive or is an array which fulfills these conditions). 076 * @param aClass class to check 077 * @return true when the class is serializable 078 */ 079 private boolean isValid(Class<?> aClass) { 080 if(aClass.isArray()) { 081 return isValid(aClass.getComponentType()); 082 } 083 return aClass.isPrimitive() || 084 Serializable.class.isAssignableFrom(aClass) || IsSerializable.class.isAssignableFrom(aClass) || 085 SerializabilityUtil.hasCustomFieldSerializer(aClass) != null; 086 } 087}