groovy

Groovy class not compatible with Java integration when @Immutable is used

Details

  • Type: Bug Bug
  • Status: Closed Closed
  • Priority: Major Major
  • Resolution: Fixed
  • Affects Version/s: 1.8.0
  • Fix Version/s: 1.8.1, 1.7.11
  • Component/s: Compiler
  • Labels:
    None
  • Number of attachments :
    0

Description

The following Groovy class with the UsePerson.java below works well:

class Person {
  String firstName
  public Person(first) { firstName = first }
}

Defining a class with @Immutable annotation seems to result in compilation error when used from Java.

Person.groovy
@Immutable class Person {
  String firstName
}
UsePerson.java
public class UsePerson {
  public static void main(String[] args) {
    Person person = new Person("Sam");
    System.out.println(person.getFirstName());
  }
}

>groovyc Person.groovy

>ls
Person.class	Person.groovy	UsePerson.java

>javac UsePerson.java 
UsePerson.java:3: cannot access Person
bad class file: ./Person.class
undeclared type variable: K
Please remove or make sure it appears in the correct subdirectory of the classpath.
    Person person = new Person("Sam");
    ^
1 error

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Paul King added a comment -

add code tags

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Paul King added a comment - add code tags
Paul King made changes -
Field Original Value New Value
Description The following Groovy class with the UsePerson.java below works well:

class Person {
  String firstName
  
  public Person(first) { firstName = first }
}

Defining a class with @Immutable annotation seems to result in compilation
error when used from Java.

//Person.groovy
@Immutable class Person {
  String firstName
}

//UsePerson.java
public class UsePerson {
  public static void main(String[] args) {
    Person person = new Person("Sam");
    System.out.println(person.getFirstName());
  }
}

>groovyc Person.groovy

>ls
Person.class Person.groovy UsePerson.java

>javac UsePerson.java
UsePerson.java:3: cannot access Person
bad class file: ./Person.class
undeclared type variable: K
Please remove or make sure it appears in the correct subdirectory of the classpath.
    Person person = new Person("Sam");
    ^
1 error
The following Groovy class with the {{UsePerson.java}} below works well:
{code}
class Person {
  String firstName
  public Person(first) { firstName = first }
}
{code}
Defining a class with @Immutable annotation seems to result in compilation error when used from Java.

{code|title=Person.groovy}
@Immutable class Person {
  String firstName
}
{code}
{code|title=UsePerson.java}
public class UsePerson {
  public static void main(String[] args) {
    Person person = new Person("Sam");
    System.out.println(person.getFirstName());
  }
}
{code}
{noformat}
>groovyc Person.groovy

>ls
Person.class Person.groovy UsePerson.java

>javac UsePerson.java
UsePerson.java:3: cannot access Person
bad class file: ./Person.class
undeclared type variable: K
Please remove or make sure it appears in the correct subdirectory of the classpath.
    Person person = new Person("Sam");
    ^
1 error
{noformat}
Paul King made changes -
Description The following Groovy class with the {{UsePerson.java}} below works well:
{code}
class Person {
  String firstName
  public Person(first) { firstName = first }
}
{code}
Defining a class with @Immutable annotation seems to result in compilation error when used from Java.

{code|title=Person.groovy}
@Immutable class Person {
  String firstName
}
{code}
{code|title=UsePerson.java}
public class UsePerson {
  public static void main(String[] args) {
    Person person = new Person("Sam");
    System.out.println(person.getFirstName());
  }
}
{code}
{noformat}
>groovyc Person.groovy

>ls
Person.class Person.groovy UsePerson.java

>javac UsePerson.java
UsePerson.java:3: cannot access Person
bad class file: ./Person.class
undeclared type variable: K
Please remove or make sure it appears in the correct subdirectory of the classpath.
    Person person = new Person("Sam");
    ^
1 error
{noformat}
The following Groovy class with the {{UsePerson.java}} below works well:
{code}
class Person {
  String firstName
  public Person(first) { firstName = first }
}
{code}
Defining a class with @Immutable annotation seems to result in compilation error when used from Java.

{code:title=Person.groovy}
@Immutable class Person {
  String firstName
}
{code}
{code:title=UsePerson.java}
public class UsePerson {
  public static void main(String[] args) {
    Person person = new Person("Sam");
    System.out.println(person.getFirstName());
  }
}
{code}
{noformat}
>groovyc Person.groovy

>ls
Person.class Person.groovy UsePerson.java

>javac UsePerson.java
UsePerson.java:3: cannot access Person
bad class file: ./Person.class
undeclared type variable: K
Please remove or make sure it appears in the correct subdirectory of the classpath.
    Person person = new Person("Sam");
    ^
1 error
{noformat}
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Paul King added a comment -

Thanks for spotting that - some internal generics information was leaking into the bytecode.

Show
Paul King added a comment - Thanks for spotting that - some internal generics information was leaking into the bytecode.
Paul King made changes -
Status Open [ 1 ] Resolved [ 5 ]
Assignee Paul King [ paulk ]
Fix Version/s 1.7.11 [ 17244 ]
Fix Version/s 1.8.1 [ 17223 ]
Resolution Fixed [ 1 ]
Paul King made changes -
Status Resolved [ 5 ] Closed [ 6 ]

People

  • Assignee:
    Paul King
    Reporter:
    Venkat Subramaniam
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Dates

  • Created:
    Updated:
    Resolved: