001/*
002 * Copyright (C) 2012 The Guava Authors
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package com.google.common.base;
018
019import com.google.common.annotations.GwtCompatible;
020import com.google.gwt.user.client.rpc.SerializationException;
021import com.google.gwt.user.client.rpc.SerializationStreamReader;
022import com.google.gwt.user.client.rpc.SerializationStreamWriter;
023
024/**
025 * Custom GWT serializer for {@link Present}.
026 *
027 * @author Chris Povirk
028 */
029@GwtCompatible
030public class Present_CustomFieldSerializer {
031  public static void deserialize(SerializationStreamReader reader, Present<?> instance) {}
032
033  public static Present<Object> instantiate(SerializationStreamReader reader)
034      throws SerializationException {
035    return (Present<Object>) Optional.of(reader.readObject());
036  }
037
038  public static void serialize(SerializationStreamWriter writer, Present<?> instance)
039      throws SerializationException {
040    writer.writeObject(instance.get());
041  }
042}