| /** |
| * 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; |
| |
| import java.util.List; |
| import org.apache.storm.trident.operation.Operation; |
| import org.apache.storm.trident.operation.TridentCollector; |
| import org.apache.storm.trident.tuple.TridentTuple; |
| |
| |
| public interface StateUpdater<S extends State> extends Operation { |
| // maybe it needs a start phase (where it can do a retrieval, an update phase, and then a finish phase...? |
| // shouldn't really be a one-at-a-time interface, since we have all the tuples already? |
| // TOOD: used for the new values stream |
| // the list is needed to be able to get reduceragg and combineragg persistentaggregate |
| // for grouped streams working efficiently |
| void updateState(S state, List<TridentTuple> tuples, TridentCollector collector); |
| } |