Search icon
Arrow left icon
All Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Newsletters
Free Learning
Arrow right icon
Pentaho Data Integration 4 Cookbook

You're reading from  Pentaho Data Integration 4 Cookbook

Product type Book
Published in Jun 2011
Publisher Packt
ISBN-13 9781849515245
Pages 352 pages
Edition 1st Edition
Languages

Table of Contents (17) Chapters

Pentaho Data Integration 4 Cookbook
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Working with Databases Reading and Writing Files Manipulating XML Structures File Management Looking for Data Understanding Data Flows Executing and Reusing Jobs and Transformations Integrating Kettle and the Pentaho Suite Getting the Most Out of Kettle Data Structures Index

Reading several files at the same time


Sometimes you have several files to read, all with the same structure, but different data. In this recipe, you will see how to read those files in a single step. The example uses a list of files containing names of museums in Italy.

Getting ready

You must have a group of text files in a directory, all with the same format. In this recipe, the names of these files start with museums_italy_ for example, museums_italy_1, museums_italy_2, museums_italy_roma, museums_italy_genova, and so on.

Each file has a list of names of museums, one museum on each line.

How to do it...

Carry out the following steps:

  1. Create a new transformation.

  2. Drop a Text file input step onto the work area.

  3. Under the File or directory tab, type the directory where the files are.

  4. In the Regular Expression textbox, type: museums_italy_.*\.txt

  5. Then click on the Add button. The grid will be populated, as shown in the following screenshot:

    Note

    ${Internal.Transformation.Filename.Directory} is a variable...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at $15.99/month. Cancel anytime}