Exception when deserialization of `private` record with default constructor

[janpachol]

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• I searched in the issues and found nothing similar.

Describe the bug

When deserializing a record, jackson fails with

com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of ... (no Creators, like default constructor, exist): cannot deserialize from Object value (no delegate- or property-based Creator)

It looks like jackson does not see default constructor.

Version Information

2.16.0-rc1

Reproduction

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Tag;
import org.junit.jupiter.api.Test;

class TestObjectTest {

    @Test
    public void shouldDeserialize() throws JsonProcessingException {
        TestObject testObject = new ObjectMapper().readValue("{\"text\":\"anything\"}", TestObject.class);
        Assertions.assertEquals("anything", testObject.text());
    }

    private record TestObject(String text) {}
}

When I add compact constructor with @JsonCreator to TestObject, it works correctly:

    private record TestObject(String text) {
        @JsonCreator
        private TestObject {
        }
    }

Additional context

• It works correctly in version 2.15.3
• tested on java 21
• May be related to Exception when deserialization uses a record with a constructor property with access=READ_ONLY #4119

[pjfanning]

@janpachol we have tests with records like this. I think that this is most likely down to the record being private as opposed to the fact that jackson can't handle public record TestObject(String text) {}.

[pjfanning]

I created #4176 as a reproducible test case.

[janpachol]

Oh, you're correct, but it looks problem is not in private record, but in private constructor (when record is private, it looks that compilation creates also private constructor):

This doesn't work:

    public record TestObject(String text) {
        private TestObject {
        }
    }

This works:

    private record TestObject(String text) {
        public TestObject {
        }
    }

[cowtowncoder]

Yes, it makes sense the issue is private constructor via Record being private (in the original case).
Given it is regression from 2.15, would be great to fix.

[JooHyukKim]

Created a PR for #4178. The issue seems to link back to the fix for #3906 via 75d0c46 where sort of force setting of record constructor visibility.