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

Managing database sessions


Database sessions allow the developer to control how and when the data is committed to a database. This recipe shows how this is achieved in Talend.

Getting ready

Open the job jo_cook_ch07_0060_databaseSession. On inspection, you will see that the job has been set up to commit after each record has been written.

How to do it…

The steps to be performed are as follows:

  1. Run the job. You will see that it is very slowly adding the records to the database.

  2. Kill the job. If you inspect the database table testSession, you will see that the records have been added to the database.

  3. Drag tMysqlConnection from the metadata panel and tMysqlCommit from the palette (note that this isn't available from the Repository panel) and wire up as shown in the following screenshot:

  4. Open tMysqlOutput and tick the option for Use an existing connection. You will see that all the connection information is now hidden.

  5. Run the job and Kill it before all ten records have been processed. If you examine...