PostgreSQL empty array column returns a null Java value instead of an empty array.

[Jul13nT]

I have an Entity with a field of type String[], mapped to a PostgreSQL database with a text[] column.

With Spring Data JDBC (Spring Boot 3.3.1), when using JdbcAggregateOperations.findAll API (or others like findOne) the result entity for this field is null when the column is empty.

I'm expecting the following results:

• column has multiple values -> result is a String array with these values
• column is null -> result is null
• column is empty -> result is an empty String array.

The third case returns null instead of an empty array.

I have made a reproduction repo: https://github.com/Jul13nT/spring-data-jdbc-empty-array You can run the CustomerRepositoryTest to see the problem. The first customer has two values, the second one has null value and the third one as well (but should be empty).

[Jul13nT]

Oops sorry, I think this is the same case as #1826