Classes in transitive project dependencies not available for the root project

Help/Discuss
1

I have 3 projects. fc is the root project.
project fc depends on conf and conf depends on base

base

build.gradle

apply plugin: 'java'

conf

build.gradle

apply plugin: 'java'

dependencies {
    implementation project(':base')
}

fc (root project)

build.gradle

apply plugin: 'java'

dependencies {
    implementation project(':conf')
}

settings.gradle

include ':conf'
project(':conf').projectDir = new File(settingsDir, '../conf')

include ':base'
project(':base').projectDir = new File(settingsDir, '../base')

When I run gradle build from fc project, I get below compilation error.


> Task :compileJava FAILED
/home/adithyan/all-files/coding/repo/office-git/build-script/mod2/gradle-test/fc/src/main/java/fc/FcClass.java:3: error: package abc does not exist
import abc.BaseClass;
          ^
/home/adithyan/all-files/coding/repo/office-git/build-script/mod2/gradle-test/fc/src/main/java/fc/FcClass.java:9: error: cannot find symbol
        BaseClass bc = new BaseClass();
        ^
  symbol:   class BaseClass
  location: class FcClass
/home/adithyan/all-files/coding/repo/office-git/build-script/mod2/gradle-test/fc/src/main/java/fc/FcClass.java:9: error: cannot find symbol
        BaseClass bc = new BaseClass();
                           ^
  symbol:   class BaseClass
  location: class FcClass
3 errors

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compileJava'.
> Compilation failed; see the compiler error output for details.

The error indicates, that the classes in the base project are not available to the compilation process of project fc.

Why?

2

The reason is that implementation dependencies are internal to the subproject that uses them to prevent accidental “dependency pollution”. See this recent blog post for a rationale. If you want them to be exported because they are part of the API of base, I’d recommend using the java-library plugin and its api configuration. Alternatively, you can use compile instead of implementation with the regular java plugin.

1 Like
3

Thanks a lot for the reply. It worked.