| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.flink.api.common.typeutils.base; |
| |
| import org.apache.flink.api.common.typeutils.CompositeTypeSerializerSnapshot; |
| import org.apache.flink.api.common.typeutils.TypeSerializer; |
| |
| import java.util.Map; |
| |
| /** |
| * Snapshot class for the {@link MapSerializer}. |
| */ |
| public class MapSerializerSnapshot<K, V> extends CompositeTypeSerializerSnapshot<Map<K, V>, MapSerializer> { |
| |
| private static final int CURRENT_VERSION = 1; |
| |
| /** |
| * Constructor for read instantiation. |
| */ |
| public MapSerializerSnapshot() { |
| super(MapSerializer.class); |
| } |
| |
| /** |
| * Constructor to create the snapshot for writing. |
| */ |
| public MapSerializerSnapshot(MapSerializer<K, V> mapSerializer) { |
| super(mapSerializer); |
| } |
| |
| @Override |
| public int getCurrentOuterSnapshotVersion() { |
| return CURRENT_VERSION; |
| } |
| |
| @Override |
| protected MapSerializer createOuterSerializerWithNestedSerializers(TypeSerializer<?>[] nestedSerializers) { |
| @SuppressWarnings("unchecked") |
| TypeSerializer<K> keySerializer = (TypeSerializer<K>) nestedSerializers[0]; |
| |
| @SuppressWarnings("unchecked") |
| TypeSerializer<V> valueSerializer = (TypeSerializer<V>) nestedSerializers[1]; |
| |
| return new MapSerializer<>(keySerializer, valueSerializer); |
| } |
| |
| @Override |
| protected TypeSerializer<?>[] getNestedSerializers(MapSerializer outerSerializer) { |
| return new TypeSerializer<?>[] { outerSerializer.getKeySerializer(), outerSerializer.getValueSerializer() }; |
| } |
| } |