/**
* 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 storm.trident.state;
import java.util.List;
import storm.trident.operation.Operation;
import storm.trident.operation.TridentCollector;
import 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);
}