To get quality metrics for our code base, we can use JDepend. JDepend traverses the generated class files in our project and generates design quality metrics. To use JDepend, we will simply have to apply the jdepend
plugin in our project. This will add jdependMain
and jdependTest
tasks. For each extra source set in our project, a jdepend<SourceSet>
task is added. These tasks are all dependency tasks of the check
task.
We must configure a repository so that Gradle can fetch the JDepend dependencies. Gradle doesn't provide the JDepend libraries in the Gradle distribution. This means that we can easily use another version of JDepend, independent of the Gradle version that we are using. We see this behavior in the other code quality plugins as well. To change a version number, we will simply have to set the toolVersion
property of the jdepend
plugin extension.
In the following example build file, we will apply the jdepend
plugin and create an extra source set:
apply...