/*
* 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.runtime.operators;
import org.apache.flink.api.common.functions.Function;
/**
* This interface marks a {@code Driver} as resettable, meaning that will reset part of their internal state but
* otherwise reuse existing data structures.
*
* @see Driver
* @see TaskContext
*
* @param <S> The type of stub driven by this driver.
* @param <OT> The data type of the records produced by this driver.
*/
public interface ResettableDriver<S extends Function, OT> extends Driver<S, OT> {
boolean isInputResettable(int inputNum);
void initialize() throws Exception;
void reset() throws Exception;
void teardown() throws Exception;
}