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Data-Centric Applications with Vaadin 8

You're reading from Data-Centric Applications with Vaadin 8 Develop and maintain high-quality web applications using Vaadin

Product type Paperback

Published in Apr 2018

Publisher Packt

ISBN-13 9781783288847

Length 202 pages

Edition 1st Edition

Languages

Java

Tools

Vaadin

Concepts

Front End Web Development

Author (1):

Duarte

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Table of Contents (17) Chapters

Title Page

Dedication

Packt Upsell

Foreword

Contributors

Preface

1. Creating New Vaadin Projects

2. Modularization and Main Screens FREE CHAPTER

3. Implementing Server-Side Components with Internationalization

4. Implementing Authentication and Authorization

5. Connecting to SQL Databases Using JDBC

6. Connecting to SQL Databases Using ORM Frameworks

7. Implementing CRUD User Interfaces

8. Adding Reporting Capabilities

9. Lazy Loading

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Index

Using object-relational mapping frameworks

In a relational database, data is represented as tables. In a Java program, data is represented as objects. For example, if you have data related to customers, you can store this data in a customers table. Similarly, you can store this data in objects which are instances of the Customer class. Object-relational mapping frameworks allow you to convert the data between these two systems.

We already learned how to fetch data via JDBC and the ResultSet interface in the previous chapter. You could take an instance of this interface, iterate over the rows, and manually set the fields of a Java class such as Customer. When you do so, you are doing the job of an ORM framework. Why reinvent the wheel? The Java ecosystem offers several options to fix the object-relational impedance mismatch. In the following sections, we'll examine three of the most popular alternatives to solve this impedance mismatch.

Note

The Object Oriented paradigm is based on software...

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Authors (1)

Duarte

Duarte

Alejandro Duarte is a developer advocate and trainer at Vaadin Ltd. He is also the author of Vaadin 7 UI Design by Example: Beginner's Guide (Packt, 2013). Graduating from the National University of Colombia with a B.S. in computer science, Alejandro learned how to program with the BASIC programming language at age 13 and has worked on many software development projects in startup-like and big companies in several countries. When he isn't coding, he splits his time between his family, his beautiful girlfriend, and his passion for the electric guitar. You can follow him on Twitter at @alejandro_du.

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