Book Image

Pentaho Data Integration 4 Cookbook

Book Image

Pentaho Data Integration 4 Cookbook

Overview of this book

Pentaho Data Integration (PDI, also called Kettle), one of the data integration tools leaders, is broadly used for all kind of data manipulation such as migrating data between applications or databases, exporting data from databases to flat files, data cleansing, and much more. Do you need quick solutions to the problems you face while using Kettle? Pentaho Data Integration 4 Cookbook explains Kettle features in detail through clear and practical recipes that you can quickly apply to your solutions. The recipes cover a broad range of topics including processing files, working with databases, understanding XML structures, integrating with Pentaho BI Suite, and more. Pentaho Data Integration 4 Cookbook shows you how to take advantage of all the aspects of Kettle through a set of practical recipes organized to find quick solutions to your needs. The initial chapters explain the details about working with databases, files, and XML structures. Then you will see different ways for searching data, executing and reusing jobs and transformations, and manipulating streams. Further, you will learn all the available options for integrating Kettle with other Pentaho tools. Pentaho Data Integration 4 Cookbook has plenty of recipes with easy step-by-step instructions to accomplish specific tasks. There are examples and code that are ready for adaptation to individual needs.
Table of Contents (17 chapters)
Pentaho Data Integration 4 Cookbook
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Executing a job or a transformation by setting static arguments and parameters


When you develop a transformation which reads command-line arguments or defines named parameters, you usually intend to call it more than once with different values for those parameters or arguments. If you know the values beforehand, then there is an easy way to call the transformation, as you will see in this recipe.

Suppose that you want to create the following three files:

  1. First file: Numbers from 1 to 10, incrementing by 1, as in 0, 1,..., 10.

  2. Second file: Numbers from 0 to 100, incrementing by 20, as in 0, 20, 40,..., 100.

  3. Third file: Numbers from 100 to 500, incrementing by 100, as in 100, 200,.., 500.

You have a transformation that generates sequences like these. You just have to call it three times with the proper arguments and parameters.

Getting ready

You need the sample transformation that generates a file with a sequence described in the introduction.

Make sure you have defined the variable ${OUTPUT_FOLDER...