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Name |
SIG Maintainability Model Plugin |
Authors |
Roland Schmaderer, Olivier Gaudin |
Jira |
http://jira.codehaus.org/browse/SONARPLUGINS/component/13990 |
Latest version |
0.1 |
License |
LGPL v3 |
Download sources |
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Download jar |
Call for a vote : sonar-sigmm-plugin-0.1.jar |
Compatibility matrix
Plugin |
0.1 |
|---|---|
Sonar |
1.11+ |
Description / Features
This plugin is an implementation of the Software Improvement Group(SIG) Maintainability Model.
The model is a 2 steps approach: calculate base indicators and then combine them to get higher level ones.
Every indicator results to a 5-levels ranking from -- (very bad)to ++ (very good).
The first step is to evaluate base metrics.
Volume: based on the number of lines of code
Complexity: based on the cyclomatic complexity of methods
Duplications: based on the density of duplications
Unit size: based on the lines of code of methods
Unit tests: based on the coverage of the application by unit tests
The second step is to combine them, by doing a simple average, using the following mapping table :
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Volume |
Complexity |
Duplications |
Unit size |
Unit tests |
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analysability |
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changeability |
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stability |
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testability |
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and therefore obtain 4 advanced indicators representing the 4 axes of maintainability of a software.
Optionally, the 4 indicators can be combined to give the maintainability ranking.
It is to be noted that the color of the spider represents the actual combined value, from RED = -- to GREEN = ++
Usage & Installation
1. Copy the jar into /extensions/plugins/ directory
2. Restart Sonar Web server
3. Launch a new quality analysis
Known limitations
TBD
Changelog
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