[GROOVY-5396] Groovy classes can't see package-local properties from a super class

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0-beta-1, 1.8.6
• Fix Version/s: 2.4.8
• Component/s: Compiler
• Assignee: Paul King
• Reporter: Tim Yates
• Created: 05/Apr/12 04:54
• Updated: 01/Feb/17 23:18
• Resolved: 26/Aug/16 00:09

Description

If I have a standard gradle project setup (attached):

build.gradle
src/
  main/
    java/
      test/
        AbstractBase.java
        SamePackageJavaBase.java
    groovy/
      test/
        GroovyBase.groovy
        GroovyBaseWithSuper.groovy

I have a single Abstract base class:

AbstractBase.java

package test ;

public abstract class AbstractBase {
  int base ;

  public AbstractBase( int base ) {
    this.base = base ;
  }

  public abstract int mult( int n ) ;
}

And a class GroovyBase that extends this class:

GroovyBase.groovy

package test

public class GroovyBase extends AbstractBase {
  public GroovyBase( int n ) {
    super( n )
  }

  public int mult( int n ) {
    n * base
  }

  static main( args ) {
    println new GroovyBase( 10 ).mult( 3 )
  }
}

When running this (using the Gradle script in the attachment), I get the exception:

Exception in thread "main" groovy.lang.MissingPropertyException: No such property: base for class: test.GroovyBase
Possible solutions: class

Changing the line

    n * base

to

    n * super.base

Or making the base field public in the AbstractBase class makes it work.

It's as if the classes are considered to be in different packages for some things, but not for others.

Thinking about it, not sure if this is a Gradle bug or a Groovy cross compiler one.

To run the tests, unpack the attachment, and run:

# Test the above failing example
gradle -Pmain=test.GroovyBase
# Test the addition of super.base
gradle -Pmain=test.GroovyBaseWithSuper
# Test the Java extension of the Abstract class
gradle -Pmain=test.SamePackageJavaBase

You can change the groovy version from 1.8.6 by passing (for example) -Pgroovy=groovy=2.0.0-beta-2

Issue Links

• links to: GitHub Pull Request #396