Book Image

Pentaho Data Integration Cookbook - Second Edition - Second Edition

Book Image

Pentaho Data Integration Cookbook - Second Edition - Second Edition

Overview of this book

Pentaho Data Integration is the premier open source ETL tool, providing easy, fast, and effective ways to move and transform data. While PDI is relatively easy to pick up, it can take time to learn the best practices so you can design your transformations to process data faster and more efficiently. If you are looking for clear and practical recipes that will advance your skills in Kettle, then this is the book for you. Pentaho Data Integration Cookbook Second Edition guides you through the features of explains the Kettle features in detail and provides easy to follow recipes on file management and databases that can throw a curve ball to even the most experienced developers. Pentaho Data Integration Cookbook Second Edition provides updates to the material covered in the first edition as well as new recipes that show you how to use some of the key features of PDI that have been released since the publication of the first edition. You will learn how to work with various data sources – from relational and NoSQL databases, flat files, XML files, and more. The book will also cover best practices that you can take advantage of immediately within your own solutions, like building reusable code, data quality, and plugins that can add even more functionality. Pentaho Data Integration Cookbook Second Edition will provide you with the recipes that cover the common pitfalls that even seasoned developers can find themselves facing. You will also learn how to use various data sources in Kettle as well as advanced features.
Table of Contents (21 chapters)
Pentaho Data Integration Cookbook Second Edition
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
References
Index

Getting information about transformations and jobs (repository-based)


In the previous recipe, you learned to read the .ktr and .kjb files to get information from the transformation and job files respectively. Spoon also allows for storing this data in tables in a relational database when using a repository-based configuration. So, let's do the same task that we did in the previous recipe, but this time connect to a Kettle repository. The objective is to search for the Modified Java Script Value steps inside a set of transformations.

Getting ready

For running this recipe, you must have a Kettle repository and a set of transformations stored in it. If you don't have a list of sample transformations to play with, then you can connect to the repository and import them from the PDI samples directory.

How to do it...

Carry out the following steps:

  1. Create a new transformation.

  2. Drop a Table input step from the Input category into the canvas.

  3. Create a connection to your repository database.

  4. Type the following...