| /** |
| * 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.storm.trident.state.map; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| import org.apache.storm.trident.state.ValueUpdater; |
| import org.apache.storm.trident.state.snapshot.Snapshottable; |
| |
| |
| public class SnapshottableMap<T> implements MapState<T>, Snapshottable<T> { |
| MapState<T> delegate; |
| List<List<Object>> keys; |
| |
| public SnapshottableMap(MapState<T> delegate, List<Object> snapshotKey) { |
| this.delegate = delegate; |
| keys = Arrays.asList(snapshotKey); |
| } |
| |
| @Override |
| public List<T> multiGet(List<List<Object>> keys) { |
| return delegate.multiGet(keys); |
| } |
| |
| @Override |
| public List<T> multiUpdate(List<List<Object>> keys, List<ValueUpdater> updaters) { |
| return delegate.multiUpdate(keys, updaters); |
| } |
| |
| @Override |
| public void multiPut(List<List<Object>> keys, List<T> vals) { |
| delegate.multiPut(keys, vals); |
| } |
| |
| @Override |
| public void beginCommit(Long txid) { |
| delegate.beginCommit(txid); |
| } |
| |
| @Override |
| public void commit(Long txid) { |
| delegate.commit(txid); |
| } |
| |
| @Override |
| public T get() { |
| return multiGet(keys).get(0); |
| } |
| |
| @Override |
| public T update(ValueUpdater updater) { |
| List<ValueUpdater> updaters = Arrays.asList(updater); |
| return multiUpdate(keys, updaters).get(0); |
| } |
| |
| @Override |
| public void set(T o) { |
| multiPut(keys, Arrays.asList(o)); |
| } |
| |
| } |