Circular task dependencies when adding compiled reports to classpath

Help/Discuss
1

I have a problem with circular task dependencies in a very simple build file.

I’m using jasperreports-gradle-plugin, which provides a task (compileAllReports) for compiling report designs into reports.

One of my reports uses a class from src/main/java, so the report compilation task depends on the runtimeClasspath (which also contains the required JasperReports library jars).

The plugin provides a way to do that:

jasperreports {
    classpath.from(project.sourceSets.main.runtimeClasspath)
}

But now I need those compiled reports available as resources on the classpath.

So I tried to add the following:

sourceSets.main.resources.srcDir(compileAllReports)

But now I get the following error:

Circular dependency between the following tasks:
:classes
\--- :processResources
     \--- :compileAllReports
          \--- :classes (*)

This does make sense, but I’m wondering if there is a way to achieve what I’m trying to do?

2

Well, as you see, the runtimeClasspath of course also contains the resources, so besides having this circular dependency, you would also do unnecessary work.

I think these two should work better and more as expected:

jasperreports {
    classpath.from(
        project.sourceSets.main.java.classesDirectory,
        configurations.named(project.sourceSets.main.compileClasspathConfigurationName)
    )
}

jasperreports {
    classpath.from(
        tasks.named(project.sourceSets.main.compileJavaTaskName).flatMap { it.destinationDirectory },
        configurations.named(project.sourceSets.main.compileClasspathConfigurationName)
    )
}
3

Thank very much you Björn!

This was exactly what I was looking for, problem solved.

1 Like