1 /*
2  * Copyright (C) 2012 The Guava Authors
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.google.common.base;
18 
19 import com.google.common.annotations.GwtCompatible;
20 import com.google.gwt.user.client.rpc.SerializationException;
21 import com.google.gwt.user.client.rpc.SerializationStreamReader;
22 import com.google.gwt.user.client.rpc.SerializationStreamWriter;
23 
24 /**
25  * Custom GWT serializer for {@link Present}.
26  *
27  * @author Chris Povirk
28  */
29 @GwtCompatible
30 public class Present_CustomFieldSerializer {
deserialize(SerializationStreamReader reader, Present<?> instance)31   public static void deserialize(SerializationStreamReader reader, Present<?> instance) {}
32 
instantiate(SerializationStreamReader reader)33   public static Present<Object> instantiate(SerializationStreamReader reader)
34       throws SerializationException {
35     return (Present<Object>) Optional.of(reader.readObject());
36   }
37 
serialize(SerializationStreamWriter writer, Present<?> instance)38   public static void serialize(SerializationStreamWriter writer, Present<?> instance)
39       throws SerializationException {
40     writer.writeObject(instance.get());
41   }
42 }
43