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/*
 * 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.dinky.shaded.paimon.table.source;

import org.dinky.shaded.paimon.annotation.Public;

import java.io.Serializable;
import java.util.List;
import java.util.Optional;

/**
 * An input split for reading.
 *
 * @since 0.4.0
 */
@Public
public interface Split extends Serializable {

    long rowCount();

    /**
     * If all files in this split can be read without merging, returns an {@link Optional} wrapping
     * a list of {@link RawFile}s to be read without merging. Otherwise, returns {@link
     * Optional#empty()}.
     */
    default Optional> convertToRawFiles() {
        return Optional.empty();
    }
}