content: /*
   * 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 com.aliyun.odps.table.read.split;
  
  import java.io.Serializable;
  
  /**
   * An input split assigner distributes the {@link InputSplit} within a table read session.
   * Each {@link InputSplit} represents a data split that can be processed by one Split reader
   */
  public interface InputSplitAssigner extends Serializable {
  
      /**
       * Returns the number of splits.
       */
      default int getSplitsCount() {
          throw new UnsupportedOperationException("Get splits count not supported");
      }
  
      /**
       * Return the split by index.
       */
      default InputSplit getSplit(int index) {
          throw new UnsupportedOperationException("Get get input split by index not supported");
      }
  
      /**
       * Return all input splits of the input split assigner.
       */
      default InputSplit[] getAllSplits() {
          throw new UnsupportedOperationException("Get all splits not supported");
      }
  
      /**
       * Returns the number of rows.
       */
      default long getTotalRowCount() {
          throw new UnsupportedOperationException("Get total row count not supported");
      }
  
      /**
       * Returns the split by row offset.
       */
      default InputSplit getSplitByRowOffset(long startIndex, long numRecord) {
          throw new UnsupportedOperationException("Get get input split by row offset not supported");
      }
  }
  