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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

Understanding tContextLoad

The tContextLoad method as described in the recipe Using tContextLoad to load contexts in Chapter 6, Managing Context Variables.

Pros

tContextLoad is more fine-grained than the other methods described previously, which means that context values could be set up for individual jobs within a project.

As with the implicit context load, use of external files is good practice for managing contexts, because they are less likely to be overwritten during deployment.

Cons

tContextLoad suffers from the same failings as implicit context load; that is, the context variable checks are against all variables or none of them. The fine grain can also be a weakness, because this method does allow much more freedom to developers and could become unmanageable.

Conclusion

The tContextLoad method provides a more fine-grained approach to contexts, giving choice to the developer as to which files and which variables within the files are required for a particular task.

Unfortunately, it does suffer...

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