Add my own Functions
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.customization; import java.io.File; import com.northconcepts.datapipeline.core.DataReader; import com.northconcepts.datapipeline.core.Functions; import com.northconcepts.datapipeline.core.StreamWriter; import com.northconcepts.datapipeline.csv.CSVReader; import com.northconcepts.datapipeline.job.Job; import com.northconcepts.datapipeline.transform.SetCalculatedField; import com.northconcepts.datapipeline.transform.TransformingReader; public class AddMyOwnFunctions { // functions are public, static methods public static String initials(String firstName, String lastName) { return firstName.substring(0, 1).toUpperCase() + " " + lastName.substring(0, 1).toUpperCase(); } public static void main(String[] args) throws Throwable { // register new function 'initials' Functions.add("initials", "com.northconcepts.datapipeline.examples.cookbook.customization.AddMyOwnFunctions.initials"); DataReader reader = new CSVReader(new File("example/data/input/credit-balance-01.csv")) .setFieldNamesInFirstRow(true); TransformingReader transformingReader = new TransformingReader(reader); // use the new function in a SetCalculatedField or FilterExpression transformingReader.add(new SetCalculatedField("name", "initials(FirstName, LastName)")); Job.run(transformingReader, new StreamWriter(System.out)); } }