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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.Comparator;
     25 import java.util.SortedMap;
     26 import java.util.TreeMap;
     27 
     28 /**
     29  * This class implements the GWT serialization of {@link ImmutableSortedMap}.
     30  *
     31  * @author Chris Povirk
     32  */
     33 public class ImmutableSortedMap_CustomFieldSerializer {
     34   public static void deserialize(SerializationStreamReader reader,
     35       ImmutableSortedMap<?, ?> instance) {
     36   }
     37 
     38   public static ImmutableSortedMap<?, ?> instantiate(
     39       SerializationStreamReader reader) throws SerializationException {
     40     /*
     41      * Nothing we can do, but we're already assuming the serialized form is
     42      * correctly typed, anyway.
     43      */
     44     @SuppressWarnings("unchecked")
     45     Comparator<Object> comparator = (Comparator<Object>) reader.readObject();
     46 
     47     SortedMap<Object, Object> entries = new TreeMap<Object, Object>(comparator);
     48     Map_CustomFieldSerializerBase.deserialize(reader, entries);
     49 
     50     return ImmutableSortedMap.orderedBy(comparator).putAll(entries).build();
     51   }
     52 
     53   public static void serialize(SerializationStreamWriter writer,
     54       ImmutableSortedMap<?, ?> instance) throws SerializationException {
     55     writer.writeObject(instance.comparator());
     56 
     57     Map_CustomFieldSerializerBase.serialize(writer, instance);
     58   }
     59 }
     60