Book Image

Rapid Application Development with OutSystems

By : Ricardo Pereira
Book Image

Rapid Application Development with OutSystems

By: Ricardo Pereira

Overview of this book

OutSystems is a software development platform that speeds up the build phase by abstracting code and making almost everything visual. This means replacing textual language with visual artifacts that avoid lexical errors and speed up code composition using accelerators and predefined templates. The book begins by walking you through the fundamentals of the technology, along with a general overview of end-to-end web and mobile software development. You'll learn how to configure your personal area in the cloud and use the OutSystems IDE to connect with it. The book then shows you how to build a web application based on the best architectural and developmental practices in the market, and takes the same approach for the mobile paradigm. As you advance, you'll find out how to develop the same application, and the great potential of reusing code from one paradigm in another and the symbiosis between them is showcased.The only application that'll differ from the application in the exercise is the one used in business process technology (BPT), with a focus on a common market use case. By the end of this OutSystems book, you'll be able to develop enterprise-level applications on the web and mobile, integrating them with third parties and other systems on the market. You'll also understand the concepts of performance, security, and software construction and be able to apply them effectively.
Table of Contents (21 chapters)
1
Section 1: OutSystems 101
5
Section 2: The Magical Path of the Backend
10
Section 3: Create Value and Innovate with the Frontend
16
Section 4: Extensibility and Complexity of the OutSystems Platform

Types of variables in Server Actions

In the backend, variables are used to transport and manipulate data. We normally use three types of variables in our Server Actions:

  • Input variables – These are variables that are outside the context of the action itself and are necessary for the operations to be performed on it. These variables can be defined as mandatory and can be of basic types, identifiers, records, and lists. These variables do not allow defining their default value if they are mandatory:

Figure 6.3 – Server Action input variable view in Service Studio

  • Output variables – These variables are, by default, results of processing that takes place within our Server Actions or error handling (if it was successful and any notification message that is necessary). These variables can be of basic types, identifiers, records, and lists. These variables allow the definition of a default value:

Figure...