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      1 /*
      2  * Copyright (C) 2011 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.Collection_CustomFieldSerializerBase;
     23 
     24 import java.util.List;
     25 
     26 /**
     27  * This class implements the GWT serialization of {@link RegularImmutableMultiset}.
     28  *
     29  * @author Louis Wasserman
     30  */
     31 public class RegularImmutableMultiset_CustomFieldSerializer {
     32   public static void deserialize(SerializationStreamReader reader,
     33       RegularImmutableMultiset<?> instance) {
     34   }
     35 
     36   public static RegularImmutableMultiset<Object> instantiate(
     37       SerializationStreamReader reader) throws SerializationException {
     38     List<Object> elements = Lists.newArrayList();
     39     Collection_CustomFieldSerializerBase.deserialize(reader, elements);
     40     /*
     41      * For this custom field serializer to be invoked, the set must have been
     42      * RegularImmutableMultiset before it's serialized. Since
     43      * RegularImmutableMultiset always have one or more elements,
     44      * ImmutableMultiset.copyOf always return a RegularImmutableMultiset back.
     45      */
     46     return (RegularImmutableMultiset<Object>) ImmutableMultiset
     47         .copyOf(elements);
     48   }
     49 
     50   public static void serialize(SerializationStreamWriter writer,
     51       RegularImmutableMultiset<?> instance) throws SerializationException {
     52     Collection_CustomFieldSerializerBase.serialize(writer, instance);
     53   }
     54 }
     55