Book Image

Getting Started with Talend Open Studio for Data Integration

By : Jonathan Bowen
Book Image

Getting Started with Talend Open Studio for Data Integration

By: Jonathan Bowen

Overview of this book

Talend Open Studio for Data Integration (TOS) is an open source graphical development environment for creating custom integrations between systems. It comes with over 600 pre-built connectors that make it quick and easy to connect databases, transform files, load data, move, copy and rename files and connect individual components in order to define complex integration processes. "Getting Started with Talend Open Studio for Data Integration" illustrates common uses and scenarios in a simple, practical manner and, building on knowledge as the book progresses, works towards more complex integration solutions. TOS is a code generator and so does a lot of the "heavy lifting"ù for you. As such, it is a suitable tool for experienced developers and non-developers alike. You'll start by learning how to construct some common integrations tasks ñ transforming files and extracting data from a database, for example. These building blocks form a "toolkit"ù of techniques that you will learn how to apply in many different situations. By the end of the book, once complex integrations will appear easy and you will be your organization's integration expert! Best of all, TOS makes integrating systems fun!
Table of Contents (22 chapters)
Getting Started with Talend Open Studio for Data Integration
About the Author
About the Reviewers

Chapter 5. Filtering, Sorting, and Other Processing Techniques

As we pass data around from component to component, system to system, there is often the need to modify it in some way. This chapter introduces the Studio's processing components, which will become your "Swiss Army Knife" as you develop integration jobs. The processing group of components is used as intermediate data processing or transformation components, intercepting data flows between input and output components. For example, we might have a filtering component between a database read component and a database write component, or between an XML file input and a CSV output. Alternatively, we might use a data sorting component that takes sales order data from a file and sorts it by customer ID in ascending order.

In this chapter, we will look at:

  • Filtering data: Removing or passing through specific records based on some attribute of the data

  • Sorting data: Alpha and numeric sorts (singularly or in combination)

  • Summing and aggregating...