fix: EXPOSED-1021 [PostgreSQL][R2DBC] Inserting null on nullable datetime array column throws

[Chantal Loncle (bog-walk)]

Description

Summary of the change: Switch exact array types passed to Statement.bindNull() to types supported by r2dbc-postgresql driver.

Detailed description:

• Why: While insert() with omitted column values works on PostgreSQL for nullable array() datetime columns, attempting to manually insert null on such columns results in unsupported errors like Cannot encode null parameter of type [Ljava.sql.Date;. R2DBC ArrayTypeMapper binds null statement values using either Array<java.sql.Date> or Array<java.sql.Timestamp>, neither of which r2dbc-postgresql has supporting codecs for. The exact supported types should be LocalDate | LocalDatetime | String.

• What:

  • Pass dialect so a check can be used to ensure the correct Array<> type is passed to bindNull()
  • Update datetime array tests to cover null value inserts

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Type of Change

Please mark the relevant options with an "X":

• Bug fix

Affected databases:

• Postgres

Checklist

• Unit tests are in place
• The build is green (including the Detekt check)

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Related Issues

EXPOSED-1021