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Sonar Eclipse provides a comprehensive Sonar integration for Eclipse. The objective of this Eclipse plugin is that developers do not have to leave their favorite IDE to get valuable information on code quality. Most of the information displayed in the Sonar Web interface is now available in Eclipse.

Installing Sonar Eclipse is pretty simple. For instructions, prerequisites and a demonstration video go to Installing Sonar Eclipse.

Table of content

Features

  • Get quality measures on ressource (project, package and files)
  • Get hotspots on given metrics (files with most duplicated lines, most complex files...)
  • Displays markers on source code upon violation of a coding standard
  • Get comprehensive list of violations on a resource
  • Bridge to Sonar Web server for access additional services (clouds, treemap...)
  • Remote or local mode
  • Track reviews assigned to the current user

Configure Sonar Eclipse

Sonar Eclipse is pre-configured to access local Sonar server listening on http://localhost:9000/. To use an other address, you need first to define this server by using the Eclipse global Preferences window :

Link projects to Sonar server

Once Sonar server is defined, the next step is to "link" eclipse projects with projects defined and analysed in Sonar server(s). This linkage operation can be done by right-clicking on the the project into the "Package explorer", and then by choosing "Configure -> Associate with Sonar..." :


You are now all done with configuration and can start using Sonar Eclipse.

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In some cases the eclipse project may not be automatically associated to a Sonar project. If that happens, you need to manually enter the groupId and the artifactId of the Sonar project.
For instance for the following Sonar project http://nemo.sonarsource.org/dashboard/index/org.codehaus.sonar-plugins:sonar-flex-plugin, the groupId is "org.codehaus.sonar-plugins" and the artifactId is "sonar-flex-plugin".

Unlink a project from Sonar server

This operation can be done by right-clicking on the the project into the "Package explorer", and then by choosing "Configure -> Remove Sonar Nature" :

Use Sonar Eclipse

Sonar Eclipse provides one eclipse perspective and four eclipse views. Those eclipse views can of course be used outside the "Sonar" eclipse perspective, but this tutorial describes the default "Sonar" eclipse perspective layout.

To activate the "Sonar" eclipse perspective, click on "Windows -> Open Perspective -> Other ..." and select "Sonar" :

Measures view

The Measures view allows to gather all available measures on the selected ressource. Most of the time, developers focus their attention on only a few metrics like complexity, uncovered lines of code by unit tests, duplicated lines, ... and want to get a quick overview on those metrics. That's why favourite metrics are displayed on the top of the Measures view. Adding or Removing a metric from the favourites list is possible by right clicking on the metric name :

Violations view

The Violations view displays the list of violations to quality rules for the selected ressource :

A double-click on a violation opens the source code editor and highlights the violation :

Once a violation has been fixed, you can simply delete it by clicking on the violation icon and then by selecting the "Delete violation" item. Deleting a violation also removes it from the Violations view :

Hotspots view

The Hotspots view allows to quickly identify hotspots on files according to favourite metrics (defined in the Measures view). You can for instance look at files with the greatest number of duplicated lines, greatest number of violations, greatest number of uncovered lines by unit tests...

Web view

The Web view displays the web Sonar dashboard (for projects and packages) or the web Sonar ressource viewer (for files). This web page can be used to access information and services (cloud, treemap, ...) that are not yet natively available in Sonar Eclipse :

Local analysis

By default Sonar Eclipse takes care to automatically collect information from the Sonar Web server and decorates the source code on-the-fly. This default behavior is pretty useful as it doesn't consume any CPU or memory on the developer's computer while quickly displaying valuable quality information as soon as a new source file is opened. But if lot of source code is modified locally, quality information available remotely might be desynchronized after a while. In that case, a local quality analysis can be run before committing any chances to the source code repository and with the same quality profile used to analyse the project remotely.

Switching from the remote to the local mode can be done by right-clicking on the the project into the "Package explorer", and then by choosing "Configure -> Sonar -> Analyse -> Locally". As soon as this mode is selected a local analysis is launched to update Violations and Measures views.

Later, at any time, you can run a new local analysis by choosing "Configure -> Sonar -> Run Local Analysis.

Reviews

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Feature available since Sonar Eclipse 2.1

A Sonar Mylyn connector allows to track all open reviews assigned to the current user. To start using this feature, a new Sonar task repository and a query to get all reviews assigned to the current user must be first created (see the Mylyn documentation page) :

Then the "Task List" view must be used to start working on all those assigned reviews :


From there, double clicking on a review open the detail of that review :

All operations on reviews available through the Sonar web interface are also available in Mylyn, so a review can be commented, fixed, reassigned, flagged as false-positive and reopened. Moreover a review can be created directly from the Eclipse source code editor on an existing violation  :
 This Mylyn extension has currently the following limitations that should be quickly fixed

  • There is no way to create a review that doesn't relate to an existing violation
  • There is no way to create a Mylyn query with filters in order for instance to retrieve reviews only on a project, or reviews assigned to another user
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