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You're reading from  Talend Open Studio Cookbook

Product typeBook
Published inOct 2013
Reading LevelIntermediate
PublisherPackt
ISBN-139781782167266
Edition1st Edition
Languages
Java
Tools
Talend
Concepts
Data Analysis
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Author (1)
Rick Barton
Rick Barton
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Rick Barton

Rick Barton is a freelance consultant who has specialized in data integration and ETL for the last 13 years as part of an IT career spanning over 25 years. After gaining a degree in Computer Systems from Cardiff University, he began his career as a firmware programmer before moving into Mainframe data processing and then into ETL tools in 1999. He has provided technical consultancy to some of the UKs largest companies, including banks and telecommunications companies, and was a founding partner of a Big Data integration consultancy. Four years ago he moved back into freelance development and has been working almost exclusively with Talend Open Studio and Talend Integration Suite, on multiple projects, of various sizes, in UK. It is on these projects that he has learned many of the lessons that can be found in this, his first book.
Read more about Rick Barton

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Using temporary files

Occasionally, it is necessary to create intermediate files within a job that are only used during the lifetime of the job. This recipe shows how to use Talend temporary files.

Getting ready

Open the jo_cook_ch04_0030_temporaryFile job.

How to do it...

The steps for using temporary files are as follows:

  1. Open the tCreateFileTemporary component, and change the name to customerTemp_XXXX.

  2. Select the options Remove file when execution is over, and Use temporary system directory.

  3. Open the tempCustomerOut component, and change File Name to ((String)globalMap.get("tCreateTemporaryFile_1_FILEPATH")).

  4. Repeat the steps for the tempCustomerIn component.

  5. Run the job, and you will see that data is written to and read from the temporary file.

How it works...

The tCreateTemporaryFile component creates an empty file that is then available for writing in the main sub job. The name of the file is stored in the globalMap variable tCreateTemporaryFile_1_FILEPATH, which is referenced by both the output...

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Talend Open Studio Cookbook
Published in: Oct 2013Publisher: PacktISBN-13: 9781782167266
© 2013 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Rick Barton

Rick Barton is a freelance consultant who has specialized in data integration and ETL for the last 13 years as part of an IT career spanning over 25 years. After gaining a degree in Computer Systems from Cardiff University, he began his career as a firmware programmer before moving into Mainframe data processing and then into ETL tools in 1999. He has provided technical consultancy to some of the UKs largest companies, including banks and telecommunications companies, and was a founding partner of a Big Data integration consultancy. Four years ago he moved back into freelance development and has been working almost exclusively with Talend Open Studio and Talend Integration Suite, on multiple projects, of various sizes, in UK. It is on these projects that he has learned many of the lessons that can be found in this, his first book.
Read more about Rick Barton

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