/*
 * 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 com.facebook.presto.orc;

import com.facebook.presto.common.Page;

import java.util.Optional;

public interface OrcWriterFlushPolicy
{
    /**
     * Return a non-empty response with a flush reason if the stripe should be flushed.
     * Return an empty response if current stripe should not be flushed yet.
     */
    Optional<FlushReason> shouldFlushStripe(
            int stripeRowCount,
            int bufferedBytes,
            boolean dictionaryIsFull);

    /**
     * Calculate how often to check whether the stripe should be flushed or not.
     * It's called once per Page.
     */
    int getMaxChunkRowCount(Page page);

    int getStripeMinBytes();

    int getStripeMaxBytes();

    int getStripeMaxRowCount();
}
