S215 : build warnings

[eschultink]

Fixes

• add some @Serial to avoid ide warnings
• fix various warnings seen in maven builds, to streamline those

Change implications

hopefully nothing; ensure tests pass

---

Note

Focuses on warning cleanup and minor API modernizations across modules; no functional changes intended.

• Add @Serial serialVersionUID to multiple Serializable types (StorageHandler.ObjectTransform, ColumnarRules, JsonSchemaFilterUtils.Options, WebhookCollectionRules and nested classes)
• Prefer Objects.equals over StringUtils.equals for gzip checks and use Objects.requireNonNullElse for header merging in AWS request adapters
• Migrate CSV parsing to CSVFormat.DEFAULT.builder().get() and align header handling in ColumnarBulkDataSanitizerImpl and RecordBulkDataSanitizerImpl
• Replace RandomUtils with ThreadLocalRandom for sampling in GCP handler; keep ~1% warning sampling
• Provide AWS lambdaEventMapper via JsonMapper.builder() with case-insensitive properties
• Import/order cleanup and minor refactors (no behavior changes expected)

^{Written by Cursor Bugbot for commit ef41b2d. This will update automatically on new commits. Configure here.}

[Copilot]

Pull request overview

This PR addresses build warnings by adding @Serial annotations to serializable classes and replacing deprecated Apache Commons and Jackson APIs with their modern equivalents. The changes modernize code to eliminate IDE and Maven build warnings without altering functionality.

Reviewed changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
GcpApiDataRequestHandler.java	Replaces deprecated RandomUtils with ThreadLocalRandom
APIGatewayV2HTTPEventRequestAdapter.java	Replaces deprecated ObjectUtils.defaultIfNull with Objects.requireNonNullElse and reorganizes imports
APIGatewayV1ProxyEventRequestAdapter.java	Replaces deprecated ObjectUtils.defaultIfNull with Objects.requireNonNullElse and reorganizes imports
AwsModule.java	Refactors ObjectMapper creation to use JsonMapper builder pattern
FieldTransform.java	Removes incorrect @nonnull annotation from primitive boolean field and reorganizes imports
WebhookCollectionRules.java	Adds @serial annotation and reorganizes imports
RecordRules.java	Reorganizes imports
JsonSchemaFilterUtils.java	Adds @serial annotation to serialVersionUID
Endpoint.java	Reorganizes imports
ColumnarRules.java	Adds @serial annotation and reorganizes imports
RecordBulkDataSanitizerImpl.java	Replaces deprecated CSVFormat methods with builder pattern and reorganizes imports
ColumnarBulkDataSanitizerImpl.java	Replaces deprecated CSVFormat methods with builder pattern and reorganizes imports
StorageHandler.java	Replaces StringUtils.equals with Objects.equals for null-safe comparison and adds @serial annotation
ClientCredentialsGrantTokenRequestBuilder.java	Reorganizes imports

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[cursor]

You have run out of free Bugbot PR reviews for this billing cycle. This will reset on February 10.

To receive reviews on all of your PRs, visit the Cursor dashboard to activate Pro and start your 14-day free trial.