Book Image

Learning Pentaho CTools

By : Miguel Gaspar
Book Image

Learning Pentaho CTools

By: Miguel Gaspar

Overview of this book

Pentaho and CTools are two of the fastest and most rapidly growing tools for practical solutions not found in any other tool available on the market. Using Pentaho allows you to build a complete analytics solution, and CTools brings an advanced flexibility to customizing them in a remarkable way. CTools provides its users with the ability to utilize Web technologies and data visualization concepts, and make the most of best practices to create a huge visual impact. The book starts with the basics of the framework and how to get data to your dashboards. We'll take you all the way through to create your custom and advanced dashboards that will create an effective visual impact and provide the best user experience. You will be given deep insights into the lifecycle of dashboards and the working of various components. Further, you will create a custom dashboard using the Community Dashboards Editor and use datasources to load data on the components. You will also create custom content using Query, the Freeform Addins Popup, and text components. Next, you will make use of widgets to create similar sections and duplicate components to reproduce other components on a dashboard. You will then learn to build a plugin without writing Java code, use Sparkl as a CPK plugin manager, and understand the application of deployment and version control to dashboard development. Finally, you will learn tips and tricks that can be very useful while embedding dashboards into other applications. This guide is an invaluable tutorial if you are planning to use custom and advanced dashboards among the solutions that you are building with Pentaho.
Table of Contents (17 chapters)
Learning Pentaho CTools
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Using preExecution and postExecution


The preExecution and postExecution functions are very similar concerning their usage, but different in their purposes.

The first one, preExecution, you can see as preparing the execution of the component. One really good example is to point to another data source, or even to a different CDA file. Let's suppose you have multiple queries that are used in multiple dashboards, and you want to have a simple file where all the common queries are placed. This is possible to change with just a couple of lines of code in the PreExecution function.

Another good example is when you want to have cascading parameters. Let's suppose you want to have a selector where you can choose between the market level (country or city), and the second filter will show you countries or cities depending on what you have selected for the first one. The first will drive the query for your second filter, and so the values to select will vary between country or city. The following code...