Book Image

Learning Pentaho Data Integration 8 CE - Third Edition

Book Image

Learning Pentaho Data Integration 8 CE - Third Edition

Overview of this book

Pentaho Data Integration(PDI) is an intuitive and graphical environment packed with drag-and-drop design and powerful Extract-Tranform-Load (ETL) capabilities. This book shows and explains the new interactive features of Spoon, the revamped look and feel, and the newest features of the tool including transformations and jobs Executors and the invaluable Metadata Injection capability. We begin with the installation of PDI software and then move on to cover all the key PDI concepts. Each of the chapter introduces new features, enabling you to gradually get practicing with the tool. First, you will learn to do all kind of data manipulation and work with simple plain files. Then, the book teaches you how you can work with relational databases inside PDI. Moreover, you will be given a primer on data warehouse concepts and you will learn how to load data in a data warehouse. During the course of this book, you will be familiarized with its intuitive, graphical and drag-and-drop design environment. By the end of this book, you will learn everything you need to know in order to meet your data manipulation requirements. Besides, your will be given best practices and advises for designing and deploying your projects.
Table of Contents (23 chapters)
Title Page
Credits
About the Author
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface

Supplying named parameters and variables


In Chapter 12, Creating Portable and Reusable Transformations, you learned how to parameterize transformations with Named Parameters. In Chapter 14, Creating Advanced Jobs, you revisited the concept but used the parameters in Jobs.

In Spoon, you specify the named parameters in the Parameters box. The window shows you the name of the defined named parameters for you to fill in the values or leave the defaults. From the Terminal window, you provide the values as part of the Pan or Kitchen command line. The syntax that you have to use is as follows:

/param:<parameter name>=<parameter value>

For example, you have a named parameter called REPORT_FOLDER and you want to give the parameter the value my_reports. The following screenshot shows you how you can provide that value in Spoon:

Providing named parameters in Spoon

This is how you do the same as part of a Pan or Kitchen command:

/param:"REPORT_FOLDER=c:\my_reports"

As you know, named parameters...