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Eclipse Capra is a configurable and extendable traceability management tool based on EMF. It is created in the context of an ITEA funded project called AMALTHEA4Public whose main aim is to develop a platform that will improve the development of embedded multicore and many core systems.

The project website can be found here.

How it works

Eclipse Capra uses the Eclipse Modelling Framework (EMF) as its base technology and stores the traceability model as an EMF model. Out of the box, it provides a number of artifact handlers that allow using, e.g., Papyrus UML models, Java methods, C functions, or Hudson builds as sources and targets for traceability links. New traceability links can be created with drag and drop and changes to the artifacts that affect the traceability links are shown in the Problems view.

The traceability metamodel is not fixed and can be defined by the user. It relies on the Eclipse extension mechanism and provides an extension point for artifacts types to be supported. To add a new type of artifact, one simply needs to add an extension to this extension point and implement the provided interfaces.

Getting Started

Installing Capra from the Update Site

Update sites with nightly builds, milestones and releases are available at [1]. An update site with nightly builds of the current development branch of Eclipse Capra is available here. Use one of the update sites to install Capra through Eclipse's "Install Software..." functionality.

Installing Capra from Sourcecode

As of Eclipse Capra 0.8.2, JDK 11 is the minimum requirement to build Eclipse Capra. It is very important that both the Eclipse installation in which the development is done as well as Maven actually use Java 11 since source code compatibility is not ensured when using later JDKs/JREs in Java 11-mode! In Eclipse, JRE 11 has to be activated and JAVA_HOME should point to JDK 11 for Maven! You can download JDK 11 at [2].

Using the Eclipse Installer

The easiest way to get up and running with Eclipse Capra is to use the Eclipse Installer. It lets you select which version of Eclipse to download and sets up everything you need to run and develop Eclipse Capra automatically. Here's how to use it:

  1. Download the Eclipse Installer.
  2. Open the Eclipse Installer. In the menu in the top-right corner, select the advanced mode.
  3. Select the "Eclipse for Eclipse Committers" package from the list. In the selection for "Product Version" below the list, select your favorite version of Eclipse (at least 2018.12) and JRE 11 as the runtime environment. Click "Next".
  4. In the list of Eclipse projects, select "Eclipse Capra". Make sure the checkbox in front of Eclipse Capra is checked and click "Next".
  5. In the next step, you get to select some variables. Most of these can remain on their default, but you have to select the correct target platform for the Eclipse product version you selected earlier. You might also want to provide credentials for your Eclipse account here to ensure that the git repository and the connections to Bugzilla and Gerrit are set up correctly. Change other variables such as installation and workspace location at your own discretion. Click "Next."
  6. The Eclipse Installer will now download the packages for your chosen Eclipse product version. You might have to agree to some licenses. After that, it will automatically start the Eclipse IDE it just installed and start setting up the development environment. That includes cloning the git repository, setting up connections to Bugzilla and Gerrit, and setting the target platform. This might take a while, but after all is said and done, you are all set!

Manual installation of the Eclipse development environment for Capra

Before downloading and using Eclipse Capra, download the Eclipse Modelling Environment. All dependencies will be downloaded automatically when Eclipse Capra is installed. In particular, parts of Papyrus, the Java Development Tools, the C/C++ Development Tools, Xcore, and Xtend will be installed.

Get the source code manually

  • Open your Eclipse Environment
  • Go to File --> Import and select Git --> Projects from Git
  • Clone the Eclipse Capra Git repository and import all available projects to your workspace. Information about the developer resources and the source code repositories is available at the project website.
  • Make sure to switch to the develop branch if you want to use the current version of Eclipse Capra
  • To make sure Eclipse can resolve all dependencies, set the correct target platform file for your version of Eclipse. All target platform files can be found in releng/ Open the correct file and set it as the active target platform by opening it and clicking on "Set as Target Platform" in the upper right corner. Eclipse will now download all dependencies. Note that this will take a while. Check the progress in the lower right corner.
  • Build your workspace
  • Make sure that all the projects have no errors.

If compilation errors occur during the first build, check if any of the dependencies above are missing. Cleaning all binaries also often helps resolve issues.

Start Capra

  • Make sure that all the projects have no errors.
  • Click on Run --> Run Configurations and create a new Eclipse Application Configuration
  • Select your running workspace
  • Click "Apply", then "Run"
  • Once the new workspace opens, create or import projects that you want to use to create traceability links
  • Go to perspectives and switch to the Capra perspective
  • Follow this video to create and visualize traceability links.

Install Graphviz

In order to use the trace link visualisation based on PlantUML, graphviz needs to be installed on the system. If it cannot be found, the Capra PlantUML viewer will display an error message. Please follow the installation instructions on the Graphviz website to install the tool in your system.

Customizing Capra

Eclipse Capra has been designed for extensibility and configurability. Many aspects of Capra can be changed by implementing a new plugin and registering it to the right extension points. This includes which artifacts Eclipse Carpa can handle, how the traceability links are persisted, and of course the traceability link types.

Adding a custom traceability meta-model

Contributing to Capra

The Capra project uses the Eclipse infrastructure for development, source code management, building, and bug tracking. Please refer to Capra/Contributing for details on how to contribute and to Capra/PreparingForRelease for information on release engineering.

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