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Preserve microsecond precision in Calendar timestamp binding - #913
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Signed-off-by: hutiefang76 <137664623+hutiefang76@users.noreply.github.com>
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Thanks for the PR! Looks good to me.
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This is a backport of the PR #913 to `v2.0-cyanoptera` branch.
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setTimestamp with a Calendar reconstructs the timestamp from epoch milliseconds, so a value ending in .123456 is bound as .123000. Using Timestamp.toInstant preserves the fractional part while retaining the existing Calendar time zone conversion. Tests cover positive and pre-epoch microsecond values, explicit zones, null timestamps and a null Calendar.
Validation on macOS arm64: compiled all Java production and test sources against the existing JNI artifact; ran TestTimestamp (27 tests). New regressions fail against the original Java implementation and pass with this patch. The full official clang-format 11 check passes. Full native and multi-platform CI remain to be run.
AI assistance was used for implementation and source review.