/**
* 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.operation;
import java.io.Serializable;
import backtype.storm.tuple.Values;
import storm.trident.tuple.TridentTuple;
/**
* A one-one transformation function
*/
public interface MapFunction extends Serializable {
/**
* Invoked by the framework for each trident tuple in a stream.
*
* @param input the input trident tuple
* @return the transformed values
*/
Values execute(TridentTuple input);
}