Support for UpdateExpression in DDB Enhanced

[cenedhryn]

Motivation and Context

The UpdateItem operation in DynamoDb Enhanced client creates native DDB UpdateExpression behind the scenes, letting users update and delete item properties. However, users cannot specify update expressions directly, limiting the number of use cases for the update operation.

With this change, users can now write their own UpdateExpressions in the context of the Extension framework, affecting item updates at a schema level and allowing users to customize features such as atomic operations on the database. For ease of use, this feature also includes an AtomicCounter annotation/tag that auto increments long values.

Modifications

The WriteModification class in the extension framework now has an updateExpression parameter that you can write to.

An UpdateExpression contains lists of the actions supported by DDB: SET, DELETE, REMOVE and ADD. The UpdateItem operation merges an UpdateExpression provided by the extensions with the one produced by calling updateItem with a supplied item, and then parses it into DDB syntax.

Testing

Unit testing, integration testing

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]

SonarCloud Quality Gate failed.   

4 Bugs
0 Vulnerabilities
0 Security Hotspots
93 Code Smells

72.6% Coverage
4.8% Duplication

[sonarqubecloud]

SonarCloud Quality Gate failed.   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
4 Code Smells

93.4% Coverage
8.2% Duplication

[joviegas]

approved merge