1/*
2 * Copyright (C) 2009 The Guava Authors
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
5 * in compliance with the License. You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software distributed under the License
10 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
11 * or implied. See the License for the specific language governing permissions and limitations under
12 * the License.
13 */
14
15package com.google.common.collect;
16
17import com.google.gwt.user.client.rpc.SerializationException;
18import com.google.gwt.user.client.rpc.SerializationStreamReader;
19import com.google.gwt.user.client.rpc.SerializationStreamWriter;
20
21import java.util.Map;
22import java.util.Map.Entry;
23
24/**
25 * This class contains static utility methods for writing {@link Table} GWT field serializers.
26 * Serializers should delegate to {@link #serialize} and {@link #populate}.
27 *
28 * <p>For {@link ImmutableTable}, see {@link ImmutableTable_CustomFieldSerializerBase}.
29 *
30 * @author Chris Povirk
31 */
32final class Table_CustomFieldSerializerBase {
33  static <T extends StandardTable<Object, Object, Object>> T populate(
34      SerializationStreamReader reader, T table) throws SerializationException {
35    Map<?, ?> hashMap = (Map<?, ?>) reader.readObject();
36    for (Entry<?, ?> row : hashMap.entrySet()) {
37      table.row(row.getKey()).putAll((Map<?, ?>) row.getValue());
38    }
39    return table;
40  }
41
42  static void serialize(SerializationStreamWriter writer, StandardTable<?, ?, ?> table)
43      throws SerializationException {
44    /*
45     * The backing map of a {Hash,Tree}BasedTable is a {Hash,Tree}Map of {Hash,Tree}Maps. Therefore,
46     * the backing map is serializable (assuming that the row, column and values, along with any
47     * comparators, are all serializable).
48     */
49    writer.writeObject(table.backingMap);
50  }
51
52  private Table_CustomFieldSerializerBase() {}
53}
54