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
17package com.google.common.collect;
18
19import com.google.gwt.user.client.rpc.SerializationException;
20import com.google.gwt.user.client.rpc.SerializationStreamReader;
21import com.google.gwt.user.client.rpc.SerializationStreamWriter;
22
23/**
24 * This class contains static utility methods for writing {@code Multiset} GWT
25 * field serializers. Serializers should delegate to
26 * {@link #serialize(SerializationStreamWriter, Multiset)} and
27 * {@link #populate(SerializationStreamReader, Multiset)}.
28 *
29 * @author Chris Povirk
30 */
31final class Multiset_CustomFieldSerializerBase {
32
33  static Multiset<Object> populate(
34      SerializationStreamReader reader, Multiset<Object> multiset)
35      throws SerializationException {
36    int distinctElements = reader.readInt();
37    for (int i = 0; i < distinctElements; i++) {
38      Object element = reader.readObject();
39      int count = reader.readInt();
40      multiset.add(element, count);
41    }
42    return multiset;
43  }
44
45  static void serialize(SerializationStreamWriter writer, Multiset<?> instance)
46      throws SerializationException {
47    int entryCount = instance.entrySet().size();
48    writer.writeInt(entryCount);
49    for (Multiset.Entry<?> entry : instance.entrySet()) {
50      writer.writeObject(entry.getElement());
51      writer.writeInt(entry.getCount());
52    }
53  }
54
55  private Multiset_CustomFieldSerializerBase() {}
56}
57