MLE-26420 Some refactoring of WriteBatcher before incremental write PR

[rjrudin]

Just some cleanup here before new functionality is added. Fixing some warnings in WriteBatcherImpl, and changed BatchWriter into a record.

[github-actions]

Copyright Validation Results
Total: 5 | Passed: 4 | Failed: 0 | Skipped: 1 | at: 2025-12-30 18:39:41 UTC | commit: f65fcf8

⏭️ Skipped (Excluded) Files

• gradle.properties

✅ Valid Files

• marklogic-client-api/src/main/java/com/marklogic/client/datamovement/WriteBatcher.java
• marklogic-client-api/src/main/java/com/marklogic/client/datamovement/impl/BatchWriter.java
• marklogic-client-api/src/main/java/com/marklogic/client/datamovement/impl/WriteBatcherImpl.java
• marklogic-client-api/src/test/java/com/marklogic/client/test/AbstractClientTest.java

✅ All files have valid copyright headers!

[Copilot]

Pull request overview

This PR performs refactoring work on the WriteBatcher implementation to prepare for upcoming incremental write functionality. The changes focus on code cleanup, modernizing Java syntax, and improving code organization without altering core functionality.

Key Changes:

• Converted BatchWriter from a class to a Java record for cleaner immutability
• Modernized code style by simplifying boolean comparisons and using pattern matching
• Consolidated import statements for better organization

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
marklogic-client-api/src/main/java/com/marklogic/client/datamovement/impl/WriteBatcherImpl.java	Simplified boolean comparisons, consolidated imports, removed unused message parameter from error handling
marklogic-client-api/src/main/java/com/marklogic/client/datamovement/impl/BatchWriter.java	Converted class to record, refactored run() method into smaller methods, used pattern matching for instanceof checks
marklogic-client-api/src/main/java/com/marklogic/client/datamovement/WriteBatcher.java	Removed commented-out code, cleaned up method modifiers, consolidated imports
marklogic-client-api/src/test/java/com/marklogic/client/test/AbstractClientTest.java	Added AfterEach hook to properly release client resources after tests
gradle.properties	Bumped version from 8.0-SNAPSHOT to 8.1-SNAPSHOT

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[Copilot]

The validation check for empty batch has been removed during the conversion to a record. Previously, the constructor threw an IllegalStateException if 'batchWriteSet.getDocumentWriteSet().size() == 0'. This validation should be added to a compact constructor in the record to maintain the same safety guarantee.

Suggested change

	BatchWriter {
	if (batchWriteSet.getDocumentWriteSet().size() == 0) {
	throw new IllegalStateException("BatchWriter requires a non-empty DocumentWriteSet.");
	}
	}