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

Executing non-Talend objects and operating system commands


Often, when running a schedule, it is necessary to execute a mixture of Talend and non-Talend objects, such as database scripts, batch files, or shell scripts. This exercise shows how this is easily achieved using Talend.

Note

Note that this exercise is for Windows only.

Getting ready

Open the job jo_cook_ch11_0080_systemCalls.

How to do it…

  1. Drag a tSystem component onto the canvas.

  2. Set the Command to the following:

    "cmd /c"+context.cookbookData+"/batchFiles/jo_cook_ch11_0080_batchFile.bat"
  3. Add a tJava component, and add the following code:

    System.out.println("Return code"+((Integer)globalMap.get("tSystem_1_EXIT_VALUE")));
  4. Link the two components using and onSubjobOk trigger and then run the job.

How it works…

The tSystem component sends a call to the operating system to execute a native command. In our case, the command is to execute a .bat file that we have coded.

When the .bat file completes, the return code can be accessed using the EXIT_VALUE...