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 23 import java.util.Comparator; 24 import java.util.Map; 25 import java.util.Map.Entry; 26 27 /** 28 * This class implements the GWT serialization of {@link TreeBasedTable}. 29 * 30 * @author Hayward Chan 31 */ 32 public class TreeBasedTable_CustomFieldSerializer { 33 34 public static void deserialize(SerializationStreamReader reader, 35 TreeBasedTable<?, ?, ?> instance) { 36 } 37 38 public static TreeBasedTable<Object, Object, Object> instantiate( 39 SerializationStreamReader reader) throws SerializationException { 40 @SuppressWarnings("unchecked") // The comparator isn't used statically. 41 Comparator<Object> rowComparator 42 = (Comparator<Object>) reader.readObject(); 43 @SuppressWarnings("unchecked") // The comparator isn't used statically. 44 Comparator<Object> columnComparator 45 = (Comparator<Object>) reader.readObject(); 46 Map<?, ?> backingMap = (Map<?, ?>) reader.readObject(); 47 48 TreeBasedTable<Object, Object, Object> table 49 = TreeBasedTable.create(rowComparator, columnComparator); 50 for (Entry<?, ?> row : backingMap.entrySet()) { 51 table.row(row.getKey()).putAll((Map<?, ?>) row.getValue()); 52 } 53 return table; 54 } 55 56 public static void serialize(SerializationStreamWriter writer, 57 TreeBasedTable<?, ?, ?> instance) 58 throws SerializationException { 59 /* 60 * The backing map of a TreeBasedTable is a tree map of tree map. 61 * Therefore, the backing map is GWT serializable (assuming the row, 62 * column, value, the row comparator and column comparator are all 63 * serializable). 64 */ 65 writer.writeObject(instance.rowComparator()); 66 writer.writeObject(instance.columnComparator()); 67 writer.writeObject(instance.backingMap); 68 } 69 } 70
