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Remote client reads the items of a LIST OF DATE back as Strings #10909
Description
Follow-up to #10865.
Gap
A LIST OF DATE property read through the remote Java client comes back as a list of Strings (["2024-01-15", "2024-01-16"]), while a scalar DATE comes back as LocalDate.
Found while writing Issue10865RemoteInheritedDateAndDateParameterIT#localDatesInAListParameter, which compares the items as text for that reason.
Likely cause (unverified)
JsonSerializer.detectHomogeneousTemporalElementType only emits an element-type hint (dates:9(6), #4849) when every item maps to Type.DATETIME; a LocalDate item maps to DATE, so the list carries no element hint and the remote client has nothing to rebuild the items from.
Why out of scope in #10865
#10865 is about the write path (client to server). This is the read path.
Activity
fix(#10909): remote client reads LIST OF DATE items as LocalDate (#10995
robfrank commentedon Oct 30, 2026
A
LIST OF DATEread through the remote Java client now comes back asLocalDateitems instead of Strings, both in projections and in whole-record reads. The whole-record path also had a day-off error in zones ahead of UTC, which is fixed.Still open:
java.util.Dateitems stay unhinted because they map to DATETIME, which is ambiguous with a DATE column. No follow-up issue.Fixed by #10995.
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fix(#10909): remote client reads LIST OF DATE items as LocalDate (#10995