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

Selecting different fields and keys for insert, update, and delete


Many applications will write to/delete from the same table in many different ways, using different fields as keys and often updating different fields at different times. This recipe shows how this can be achieved without having to create new schemas each time.

Getting ready

Open the job jo_cook_ch07_0080_fieldSelection.

How to do it…

The steps to be performed are as follows:

  1. Open the tMysqlOutput component and change the field Action on data from Insert to Insert or update.

  2. Now click on the Advanced settings tab.

  3. Tick the box Use field options to reveal the Field Options panel. You should see that all the fields are set as Insertable and Updatable.

  4. Uncheck createdDate and createdBy in the column Updatable.

  5. Uncheck updatedDate and updatedBy in the column Insertable.

  6. Finally check the Update Key column for the column id. Your Field options should now look as shown in the following screenshot:

  7. Run the job and inspect the table. You will...