MLE-26428 Added timestamp to metadata for incremental write

[rjrudin]

No description provided.

[Copilot]

Pull request overview

This PR adds timestamp tracking to the incremental write functionality by storing a timestamp alongside the hash value in document metadata. The changes ensure that each document written through the incremental write filter captures both when it was written (timestamp) and its content signature (hash).

Key changes:

• Renamed fieldName to hashKeyName throughout the codebase to better reflect that it's a metadata key, not a field name
• Added timestampKeyName parameter with default value "incrementalWriteTimestamp" to track when documents are written
• Updated the addHashToMetadata method to accept and store both hash and timestamp values

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
IncrementalWriteFilter.java	Core changes: renamed field parameter, added timestamp key parameter, and updated metadata storage to include timestamp
IncrementalWriteOpticFilter.java	Updated constructor and field reference to use new hashKeyName parameter
IncrementalWriteEvalFilter.java	Updated constructor and JavaScript eval script to use hashKeyName instead of fieldName
IncrementalWriteFilterTest.java	Added test assertions to verify timestamp is correctly added to metadata
IncrementalWriteTest.java	Updated method calls to use hashKeyName and added timestamp validation in verification method

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[github-actions]

Copyright Validation Results
Total: 5 | Passed: 5 | Failed: 0 | Skipped: 0 | at: 2025-12-31 21:04:14 UTC | commit: 143d5f1

✅ Valid Files

• marklogic-client-api/src/main/java/com/marklogic/client/datamovement/filter/IncrementalWriteEvalFilter.java
• marklogic-client-api/src/main/java/com/marklogic/client/datamovement/filter/IncrementalWriteFilter.java
• marklogic-client-api/src/main/java/com/marklogic/client/datamovement/filter/IncrementalWriteOpticFilter.java
• marklogic-client-api/src/test/java/com/marklogic/client/datamovement/filter/IncrementalWriteFilterTest.java
• marklogic-client-api/src/test/java/com/marklogic/client/datamovement/filter/IncrementalWriteTest.java

✅ All files have valid copyright headers!