Add a Sequence Number Column when Values Change
Updated: Feb 21, 2022
/* * Copyright (c) 2006-2022 North Concepts Inc. All rights reserved. * Proprietary and Confidential. Use is subject to license terms. * * https://northconcepts.com/data-pipeline/licensing/ */ package com.northconcepts.datapipeline.examples.cookbook; import java.io.File; import com.northconcepts.datapipeline.core.DataReader; import com.northconcepts.datapipeline.core.StreamWriter; import com.northconcepts.datapipeline.csv.CSVReader; import com.northconcepts.datapipeline.job.Job; import com.northconcepts.datapipeline.transform.SetBatchSequenceNumberField; import com.northconcepts.datapipeline.transform.TransformingReader; public class AddASequenceNumberColumnWhenValuesChange { public static void main(String[] args) { DataReader reader = new CSVReader(new File("example/data/input/credit-balance-01.csv")) .setFieldNamesInFirstRow(true); TransformingReader transformingReader = new TransformingReader(reader); transformingReader.add(new SetBatchSequenceNumberField("BatchNumber", 10, 5, "Rating")); Job.run(transformingReader, new StreamWriter(System.out)); } }