org.apache.flink.runtime.operators.udf.AssignRangeIndex Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* 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
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*/
package org.apache.flink.runtime.operators.udf;
import org.apache.flink.api.common.distributions.CommonRangeBoundaries;
import org.apache.flink.api.common.distributions.RangeBoundaries;
import org.apache.flink.api.common.functions.RichMapPartitionFunction;
import org.apache.flink.api.common.typeutils.TypeComparatorFactory;
import org.apache.flink.api.java.tuple.Tuple2;
import org.apache.flink.util.Collector;
import java.util.List;
/**
* This mapPartition function require a DataSet with RangeBoundaries as broadcast input, it
* generate Tuple2 which includes range index and record itself as output.
*
* @param The original data type.
*/
public class AssignRangeIndex extends RichMapPartitionFunction> {
private TypeComparatorFactory typeComparator;
public AssignRangeIndex(TypeComparatorFactory typeComparator) {
this.typeComparator = typeComparator;
}
@Override
public void mapPartition(Iterable values, Collector> out) throws Exception {
List