Refactor "Move Inner to Outer level" on record drops the record details

[homberghp]

Apache NetBeans version

Apache NetBeans 20

What happened

When you have an inner record like so;

package example;
import java.time.LocalDate;
public class Example {
    public record Studentje(int id, String fullName, LocalDate dob){}
}

and for some reason you want it to be an outer class in its own file, then
refactor Move Inner to Outer level, then the result in the that file is

package example;
import java.time.LocalDate;
public class Studentje {
}

dropping all record details.

Language / Project Type / NetBeans Component

java editor

How to reproduce

make class as above with inner record and apply refactoring Move Inner to.
The resulting class is no longer a record, the record component parameters including parenthesis are dropped,
but the import (LocalDate) is handed over, but is useless because of the stripping.

Did this work correctly in an earlier version?

No / Don't know

Operating System

ubuntu 24.04, Windows 11

JDK

java 21, Java 17 at least

Apache NetBeans packaging

Apache NetBeans binary zip

Anything else

occurs always.

Are you willing to submit a pull request?

Yes, I am at it, but stuck on the steps from parsetree to java code and possibly templates.

[homberghp]

Working on tests. Tests first. Then I might be able to resolve the issue, so answer to 'willing to submit a pull request is maybe'

[homberghp]

Further investigation revealed the following.

After adding two times RECORD as case label in file java.source.base/org.netbeans.api.java.source.WorkingCopy.java,
and adding a non-null test in java.source.base/src/org/netbeans/modules/java/source/transform/ImmutableTreeTranslator.java I am able to get nearer to a solution.

My tests now produces

/*                                                                              
* Refactoring License                                                           
*/                                                                              
package t;                                                                      
import java.time.LocalDate;                                                     
import java.util.Objects;                                                       
/**                                                                             
*                                                                               
* @author junit                                                                 
*/                                                                              
record F(private final int id, private final String name, private final LocalDate dob) { //<1>
  /**                                                                             
   * Validate stuff.                                                               
   */                                                                              
    public F(int id, String name, LocalDate dob) {  //<2>                                
          Objects.requireNonNull(id);                                                     
          Objects.requireNonNull(name);                                                   
          Objects.requireNonNull(dob);                                                    
          assert !name.isEmpty() && !name.isBlank();                                      
          assert dob.isAfter(LocalDate.EPOCH);                                            
      }                                                                                 
}                                                                               

from the following original inner/outer class text:

package t;

import java.time.LocalDate;
import java.util.Objects;

public class A {

      void useStudent() {
            F s = new F(42,"Jan Klaassen", LocalDate.now().minusDays(1));
             System.out.println("student = " + s);
        }

        record F(int id, String name, LocalDate dob) {

    /**
     * Validate stuff.
      */
    public F {
          Objects.requireNonNull(id);
          Objects.requireNonNull(name);
          Objects.requireNonNull(dob);
          assert !name.isEmpty() && !name.isBlank();
          assert dob.isAfter(LocalDate.EPOCH);
         }
    }
}

.

As can be seen:

1. The record header has wrong RecordComponent declarations (they include private final)
2. The constructor is not a compact constructor but a 'normal' one, but is not sufficient to be designated as the canonical constructor because it is missing the field assignments.

So I am stuck with finding how information from the AST parsetree (classtree) is written out as java code.

A simpler test with a record within a record shows that outer record is properly generated, but the inner record
is malformed to

record F(private final int x, private final int y) {} 

It might have to do with Templates, but I have no idea where I can find them.

[homberghp]

Dropped earlier pull request and created a new one based on a branch: issue7044.