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Talend Open Studio Cookbook

You're reading from   Talend Open Studio Cookbook Getting familiar with Talend Open Studio will greatly enhance your data handling and integration capabilities. This is the perfect reference book for beginners and intermediates with a host of practical recipes that clarify even complex features.

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Product type Paperback
Published in Oct 2013
Publisher Packt
ISBN-13 9781782167266
Length 270 pages
Edition 1st Edition
Languages
Tools
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Author (1):
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Rick Barton Rick Barton
Author Profile Icon Rick Barton
Rick Barton
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Toc

Table of Contents (16) Chapters Close

Preface 1. Introduction and General Principles FREE CHAPTER 2. Metadata and Schemas 3. Validating Data 4. Mapping Data 5. Using Java in Talend 6. Managing Context Variables 7. Working with Databases 8. Managing Files 9. Working with XML, Queues, and Web Services 10. Debugging, Logging, and Testing 11. Deploying and Scheduling Talend Code 12. Common Mistakes and Other Useful Hints and Tips A. Common Type Conversions
B. Management of Contexts Index

Enabling and disabling reject flows

Rejected data is closely coupled to schemas (Chapter 2, Metadata and Schemas), as many of the input and output components will validate data according to a schema definition and then pass any incorrect data to a reject flow.

Reject flows thus allow non-conforming data to be collected and handled as per the needs of a project.

In some cases, depending upon the business requirement, rejects are not acceptable. In these cases, reject flows should be disabled and the job allowed to fail.

Tip

Whether a job dies on the first incorrect record, collects rejects in a file, or completely ignores rejects is a design decision that should be based upon the requirements for the process. Where possible, designers and developers should attempt to define how errors and rejects are handled before coding begins.

Getting ready

Open the job jo_cook_ch03_0000_inputReject.

How to do it…

  1. Run the job and it will fail with an unparseable date error.
  2. Open the tFileInputDelimited...
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