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1 /*
2  * Copyright (C) 2009 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.collect;
18 
19 import com.google.gwt.user.client.rpc.SerializationException;
20 import com.google.gwt.user.client.rpc.SerializationStreamReader;
21 import com.google.gwt.user.client.rpc.SerializationStreamWriter;
22 import com.google.gwt.user.client.rpc.core.java.util.Map_CustomFieldSerializerBase;
23 
24 import java.util.LinkedHashMap;
25 import java.util.Map;
26 
27 /**
28  * This class implements the GWT serialization of {@link RegularImmutableMap}.
29  *
30  * @author Hayward Chan
31  */
32 public class RegularImmutableMap_CustomFieldSerializer {
33 
deserialize(SerializationStreamReader reader, RegularImmutableMap<?, ?> instance)34   public static void deserialize(SerializationStreamReader reader,
35       RegularImmutableMap<?, ?> instance) {
36   }
37 
instantiate( SerializationStreamReader reader)38   public static RegularImmutableMap<Object, Object> instantiate(
39       SerializationStreamReader reader) throws SerializationException {
40     Map<Object, Object> entries = new LinkedHashMap<Object, Object>();
41     Map_CustomFieldSerializerBase.deserialize(reader, entries);
42     /*
43      * For this custom field serializer to be invoked, the map must have been
44      * RegularImmutableMap before it's serialized.  Since RegularImmutableMap
45      * always have two or more elements, ImmutableMap.copyOf always return
46      * a RegularImmutableMap back.
47      */
48     return (RegularImmutableMap<Object, Object>) ImmutableMap.copyOf(entries);
49   }
50 
serialize(SerializationStreamWriter writer, RegularImmutableMap<?, ?> instance)51   public static void serialize(SerializationStreamWriter writer,
52       RegularImmutableMap<?, ?> instance) throws SerializationException {
53     Map_CustomFieldSerializerBase.serialize(writer, instance);
54   }
55 }
56