Book Image

RavenDB 2.x Beginner's Guide

By : Khaled Tannir
Book Image

RavenDB 2.x Beginner's Guide

By: Khaled Tannir

Overview of this book

RavenDB is a second generation document database written in .NET, offering a flexible data model designed to address requirements coming from real-world systems. It is different from the other document databases around, as with RavenDB you can get up and running in a few minutes, and that includes grasping all the basics. It allows you to build high-performance, low-latency applications with ease and efficiency.RavenDB 2.x Beginner's Guide introduces RavenDB concepts and teaches you everything, right from installing RavenDB, to creating documents, and querying indexes. This book will help you take advantage of powerful, document-oriented NoSQL databases and build a solid foundation on which you can create your .NET applications. This book presents RavenDB, the .NET document-oriented NoSQL database, through a series of clear and practical exercises that will help you to take advantage of this database server. The book starts off with an introduction to RavenDB and its Management Studio. You will then move ahead and learn how to quickly and efficiently build high performance, NoSQL document-oriented .NET applications using the .NET client API or the HTTP REST API. Next, Dynamic and static indexes that use map/reduce to process datasets are covered. You will then see how to create and query these indexes, with the help of detailed examples. You will also learn how to deploy your RavenDB server in a production environment and how to optimize and secure it.With numerous practical examples, RavenDB 2.x Beginner's Guide teaches you everything you need to know for building high performance .NET document-oriented NoSQL databases.
Table of Contents (21 chapters)
RavenDB 2.x Beginner's Guide
Credits
About the Author
Acknowledgments
About the Reviewers
www.PacktPub.com
Preface
Index

Time for action – adding a TransformResults to the index


We will modify the CountryPopulation index and will define its Map, Reduce, and TransformResults functions. This new index version will aggregate the Population for each Country and will transform the query result to a new format the shape of which is the same as the CountryPopulation class which you will also create. Then you will open the index in Management Studio to execute it and view its result.

  1. Open the RavenDB_Ch04 project in Visual Studio.

  2. Add a new class to the RavenDB_Ch04 project, name it CountryPopulation and make it look like the following code snippet:

  3. Add the new CountryPopulation index definition to the Main() method using the following code:

  4. Add the following code to the Main() method to query the Cities/CountryPopulation index.

  5. Save all the files, build and run the solution.

  6. In Management Studio, execute the Cities/CountryPopulation index and observe the result when the Skip Transform option is checked and when it is not...