Book Image

Talend Open Studio Cookbook

By : Rick Barton
Book Image

Talend Open Studio Cookbook

By: Rick Barton

Overview of this book

Data integration is a key component of an organization's technical strategy, yet historically the tools have been very expensive. Talend Open Studio is the world's leading open source data integration product and has played a huge part in making open source data integration a popular choice for businesses worldwide.This book is a welcome addition to the small but growing library of Talend Open Studio resources. From working with schemas to creating and validating test data, to scheduling your Talend code, you will get acquainted with the various Talend database handling techniques. Each recipe is designed to provide the key learning point in a short, simple and effective manner.This comprehensive guide provides practical exercises that cover all areas of the Talend development lifecycle including development, testing, debugging and deployment. The book delivers design patterns, hints, tips, and advice in a series of short and focused exercises that can be approached as a reference for more seasoned developers or as a series of useful learning tutorials for the beginner.The book covers the basics in terms of schema usage and mappings, along with dedicated sections that will allow you to get more from tMap, files, databases and XML. Geared towards the whole lifecycle, the Talend Open Studio Cookbook shows readers great ways to handle everyday tasks, and provides an insight into all areas of a development cycle including coding, testing, and debugging of code to provide start-to-finish coverage of the product.
Table of Contents (21 chapters)
Talend Open Studio Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Common Type Conversions
Index

Gathering all rejects prior to killing a job


As an alternative to collecting incorrect rows up to the point where a job fails (Die on error), you may wish to capture all rejects from an input before killing a job.

This has the advantage of enabling support personnel to identify all problems with source data in a single pass, rather than having to re-execute a job continually to find and fix a single error / set of errors at a time.

Getting ready

Open the job jo_cook_ch03_0010_validationSubjob. As you can see, the reject flow has been attached and the output is being sent to a temporary store (tHashMap).

How to do it…

  1. Add the tJava, tDie, tHashInput, and tFileOutputDelimited components.

  2. Add onSubjobOk to tJava from the tFileInputDelimited component.

  3. Add a flow from the tHashInput component to the tFileOutputDelimited component.

  4. Right-click the tJava component, select Trigger and then Runif. Link the trigger to the tDie component. Click the if link, and add the following code

    ((Integer)globalMap.get...