René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"$toMillis: \u003e3 fractional-second digits throw raw java.time.DateTimeException instead of truncating to millis (jsonata 2.2.1)","articleBody":"Surfaced while comparing JSONata4Java against the jsonata-js 2.2.1 test corpus during the Jackson 3 migration (#430 / PR #431). Pre-existing functional-compatibility gap vs the reference implementation (try.jsonata.org 2.2.1), not a migration regression.\n\n`$toMillis` with a picture whose fractional-second component supplies more precision than milliseconds throws a raw `java.time.DateTimeException` instead of truncating to milliseconds like the reference.\n\nExample:\n\n```\n$toMillis(\"2026-04-08T19:05:04.01987\", \"[Y0001]-[M01]-[D01]T[H01]:[m01]:[s01].[f1]\")\n```\n\n- JSONata4Java: raw `java.time.DateTimeException: Invalid value for NanoOfSecond (valid values 0 - 999999999): ...`\n- jsonata.org 2.2.1: truncates sub-millisecond precision to milliseconds (round-trips to `...019Z`).\n\nExpected: truncate to millisecond precision (matching the reference) rather than leaking an internal `java.time.DateTimeException`.\n\nReference: jsonata-js 2.2.1.","author":{"url":"https://github.com/wnm3","@type":"Person","name":"wnm3"},"datePublished":"2026-07-07T19:05:05.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/438/JSONata4Java/issues/438"}