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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

Validating against the schema


The tSchemaComplianceCheck is a very useful component for ensuring that the data passing downstream is correct with respect to the defined schema.

This simple exercise demonstrates how rows can be rejected using this component.

Getting ready

Open the job jo_cook_ch03_0020_schemaCompliance.

How to do it…

  1. Run the job. You should see two rows being rejected.

  2. Add a tSchemaComplianceCheck and two tLogRow, right click on tSchemaComplianceCheck_1 and select Row then Rejects. Join the flow one of the new tLogRow. Connect the main to the other as shown:

  3. Now, when you run the job, you will see an additional reject row being output from the tSchemaComplianceCheck component.

How it works…

The tFileInputDelimited component will detect only some of the anomalies within the data, whereas the tSchemaComplianceCheck component will perform a much more thorough validation of the data.

If you look at the output, you will see the log entry, which shows that the name field has exceeded the...

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