/*
* Copyright 2013 the original author or authors.
*
* Licensed 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.springframework.data.hadoop.store.strategy.rollover;
/**
* A strategy interface used for file or stream writers to determine when a file or a stream
* should be rolled over. Usual use case is to roll if file size becomes too large or if
* written entries should be partitioned with a certain time slots.
*
* @author Janne Valkealahti
*
*/
public interface RolloverStrategy extends RolloverStrategyFactory<RolloverStrategy> {
/**
* Checks if strategy wants to rollover.
*
* @return true, if rollover should happen
*/
boolean hasRolled();
/**
* Reset the strategy state.
*/
void reset();
/**
* Sets the write position.
*
* @param position the new write position
*/
void setWritePosition(long position);
}