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Up to the following version of hibernate-core
implementation '.hibernate.orm:hibernate-core:6.6.0.Alpha1'

it would be possible to perform the following code successfully:

INSERT INTO example_table (geom) 
VALUES (
    ST_SetSRID(
        ST_GeomFromGeoJSON(
            $dollar${"type":"Point","coordinates":[-34.4214,-15.9216]}$dollar$
        ),
        4326
    )
)
ON CONFLICT DO NOTHING;

Which hibernate would run the following statement:

INSERT INTO example_table (geom) 
VALUES (
    ST_SetSRID(
        ST_GeomFromGeoJSON(
            $dollar${"type":"Point","coordinates":[-34.4214,-15.9216]}$dollar$
        ),
        4326
    )
)
ON CONFLICT DO NOTHING;;

But after upgrading that dependency to:
implementation '.hibernate.orm:hibernate-core:6.6.0.CR1' OR ABOVE, the same query would cause hibernate to try to execute the following statement:

INSERT INTO example_table (geom) 
VALUES (
    ST_SetSRID(
        ST_GeomFromGeoJSON(
            $dollar$""""""{type:Point,coordinates:[-34.4214,-15.9216]}$dollar$
        ),
        4326
    )
)
ON CONFLICT DO NOTHING;;

Which leads to the following exception: [ERROR: unknown GeoJSON type] [n/a].

Those queries are run using EntityManager.createNativeQuery(query).

Does anyone know why this started happening (multiple double quotes in the query)? I couldn't find anything about it in the release notes. The only way I found to solve this issue was taking off the dollar quote and surrounding the json with single quotes, which is not what I want to do.

This happens to every version above 6.6.0.CR1, including the one used by spring data jpa from spring boot 3.4.x.

edit. 1

I need to use native queries for batch inserts with upsert behavior. Hibernate/JPA does not support operations like ON CONFLICT DO NOTHING.

edit. 2

This issue seems to happen with JSON data in general, not just with GeoJson type.

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