Use actual member name for NULL

[dagnir]

Motivation and Context

In DynamoDB, the "NULL" member of AttributeValue is customized to "NUL" because "null" is a reserved keyword. This has the effect of generating nul() and getNul() as getters, and nul(Boolean), and setNul(Boolean) as setters for the serializable builder class.

If using the serializable builder class to map from a JSON string with the correct property name "NULL", it will not be recognized.

To fix this, generate an additional setter with the correct name setNull().

To make this work, ModifyModelShapeModifier has been updated with a new option called alternateBeanPropertyName. When set, for the modified member, we will generate an additional bean style setter on the model builder using the given property name.

Diff of generated code. Adds a setNull that behaves exactly like setNul.

--- attributevalue-old.java     2025-08-20 15:03:41
+++ attributevalue-new.java     2025-08-20 15:01:46
@@ -1340,6 +1340,12 @@
         }

         public final void setNul(Boolean nul) {
+            Object oldValue = this.nul;
+            this.nul = nul;
+            handleUnionValueChange(Type.NUL, oldValue, this.nul);
+        }
+
+        public final void setNull(Boolean nul) {
             Object oldValue = this.nul;
             this.nul = nul;
             handleUnionValueChange(Type.NUL, oldValue, this.nul);

Modifications

Testing

Screenshots (if appropriate)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

Checklist

• I have read the CONTRIBUTING document
• Local run of mvn install succeeds
• My code follows the code style of this project
• My change requires a change to the Javadoc documentation
• I have updated the Javadoc documentation accordingly
• I have added tests to cover my changes
• All new and existing tests passed
• I have added a changelog entry. Adding a new entry must be accomplished by running the scripts/new-change script and following the instructions. Commit the new file created by the script in .changes/next-release with your changes.
• My change is to implement 1.11 parity feature and I have updated LaunchChangelog

License

• I confirm that this pull request can be released under the Apache 2 license

[sonarqubecloud]

Quality Gate passed

Issues
3 New issues
0 Accepted issues

Measures
0 Security Hotspots
93.9% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

This pull request has been closed and the conversation has been locked. Comments on closed PRs are hard for our team to see. If you need more assistance, please open a new issue that references this one.