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Pentaho Data Integration 4 Cookbook

Pentaho Data Integration 4 Cookbook

4.8 (8)
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Pentaho Data Integration 4 Cookbook

Pentaho Data Integration 4 Cookbook

4.8 (8)

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)
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Pentaho Data Integration 4 Cookbook
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Deleting one or more files


Kettle provides two job entries for deleting files: Delete file and Delete files entries. You can find both in the File management category of entries.

In this recipe, you will see an example of how to delete a file. You will delete a file that includes the current date as part of its name, for example test_20101020.txt.

Getting ready

You must create a sample file; for example, test_20101020.txt. Make sure to use your current date instead of 20101020. Use the same format (yyyyMMdd).

How to do it...

  1. Create a new transformation.

  2. Drop a Get System Info step from the Input category into the work area.

  3. Double-click on the step and add a field named date. In the Type column, select system date(fixed).

  4. Add a Select values step from the Transform category. Open it, and under the Meta-data tab, add the Fieldname date, set the type to String and type or select yyyyMMdd in the Format column.

  5. From the Job category, add a Set Variables step. Double-click on it and fill in the grid...

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