Eclipse plugin in multi module build

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,
1

I have project with some modules that have sub-modules.

If i run gradle clean-eclipse eclipse on a top-module then eclipse for all modules below is updated.

Is there a way to only update the eclipse files in a certain module? I would like to take it slow. One module at the time.

2

The -p parameter sets the project on which the task should be executed.

gradle -p "modulename" cleanEclipse eclipse
3

Yes, but it still affects the modules below it. Not just the single one.

4

does anyone have the answer to my question?

5

You should be able to do

gradle :foo:cleanEclipse :foo:eclipse

Where “foo” is your module name

6

This is better but not good enough.

The eclipseProject task is still executes on sub-projects. I would like that no eclipse* tasks are executed on sub-projects.

7

As a first step, let’s understand the task dependencies so that we can disable them. You can use the Gradle Task Tree Plugin to see the task dependencies

eg:

plugins {
    id "com.dorongold.task-tree" version "1.3"
}

Then run

gradle :foo:cleanEclipse :foo:eclipse taskTree

And copy/paste the output

1 Like
8

Project Foo has a dependency on Bar.
Also I’m haven the eclipse task depending on cleanEclipse.

D:\workspaces\SomeProject\Foo>gradle :eclipse :taskTree

> Task :taskTree

------------------------------------------------------------
Root project
------------------------------------------------------------

:eclipse
+--- :cleanEclipse
|    +--- :cleanEclipseClasspath
|    +--- :cleanEclipseJdt
|    \--- :cleanEclipseProject
+--- :eclipseClasspath
+--- :eclipseJdt
+--- :eclipseProject
\--- :Bar:eclipseProject

It changes the .project file in Bar. Spaces becomes tabs and things are ordered differently.

9

You could do something like

gradle.taskGraph.whenReady { taskGraph ->
   List<Task> eclipseTasks = taskGraph.allTasks.findAll { it.name.toLowerCase().contains('eclipse') }
   if (eclipseTasks) {
      Set<Project> sortedProjects = new TreeSet<>(new ProjectComparator())
      sortedProjects.addAll(eclipseTasks*.project)
      // find the highest level project
      Project topProject = sortedProjects.iterator().next()
      // disable any eclipse tasks that aren't for the top project
      eclipseTasks.findAll { it.project != topProject}*.enabled = false
   }
}

class ProjectComparator implements Comparator<Project> {
   int compare(Project left, Project right) {
      return left == right ? 0 
         : isParent(left, right) ? -1
         : isParent(right, left) ? 1
         : left.name.compareTo(right.name)
      }
   }
   boolean isParent(Project left, Project right) {
      Project current = right
      while (current != null) {
         if (left == current.parent) return true
         current = current.parent
      }
      return false
   }
}
10

That is not an acceptable solution.

I think that there should be a flag on the Eclipse plugin that enables/disables modifying eclipse files on sub-projects.

11

That is not an acceptable solution.

You could move ProjectComparator from build.gradle to buildSrc/src/main/groovy/ProjectComparator.groovy if you want to clean it up a bit :slight_smile: