The AVACloud web service offers you an easy way to integrate all GAEB & tendering (AVA in German) workflows in your Java based application. This example shows you how to obtain an authentication token from Dangl.Identity, which will then be used with AVACloud to transform a GAEB file to Excel and finally do some analysis and reporting of the projects content.
Other use cases, such as converting from GAEB to GAEB or to the unified Dangl.AVA project system follow the same principles and are just as easy with the AVACloud Java client.
Java - GAEB Example Source Code
The source code for the example app is available on GitHub. You can download it and work directly with it. All you need is a recent Java JDK and Maven.
Project Creation & AVACloud Client
If you want to create a new Java project, you can add the source code for the AVACloud Java Client. You have to configure the following, additional project dependencies:
The authentication of AVACloud is based on OpenID and utilizes JSON Web Tokens (JWT) to authenticate and authorize API calls. If you have not done so yet, please register a Developer account at Dangl.Identity to get 30 days full access to AVACloud. If you need a longer evaluation phase, please contact DanglIT.
In the next step, we'll build a Java method that authenticates itself via the Client Credentials grant type with Dangl.Identity to get access to the AVACloud API:
To implement authentication, you can use any OpenID Connect (OIDC) compatible library.
The actual authentication process is straightforward - you send your ClientId and your ClientSecret to the token endpoint of Dangl.Identity https://identity.dangl-it.com/connect/token and receive an access_token that is valid for 60 minutes for all API calls.
Finally, the authentication is configured for the client classes:
GAEB to Excel Conversion
The first task of the example app is to convert a GAEB file with AVACloud to a Microsoft Excel Workbook. This is the same way that you would convert between different GAEB formats or GAEB and the unified Dangl.AVA project system.
Access the GAEB Project Contents in Java
Customers of DanglIT get their main benefit not only by being able to convert GAEB files, but by transforming any GAEB files to the unified Dangl.AVA project model. With this format, you are able to integrate a single interface in your existing applications to be able to support all GAEB formats in Java.
It does not matter what kind of the many different GAEB files you have - AVACloud recognizes the correct type automatically and returns a unified data structure. The methods getProjectTotalPrice() and getProjectPositionCount() give you a small peek into how you can query the project model:
Do you have questions regarding the usage of AVACloud? You want to quickly implement a GAEB interface for your Java application? Please contact us!