Add note that headless repositories are possible

[rlconst]

I tried to create two un-bound repositories with raw queries and it perfectly works. Either documentation is outdated or there are some pitfalls.

[sdelamo]

Could you add a test of what now works and it used not work?

[rlconst]

@sdelamo I added example of headless repos

[rlconst]

I'm not sure if oracle migration is relevant to my changes

[graemerocher]

seems the syntax for creating duality JSON views in Oracle changes in the latest published docker images, we will need to investigate but this seems unrelated yes

[dstepanov]

Maybe the text can be rephrased to explain that you cannot use GenericRepository and friends without an entity.

[radovanradic]

seems the syntax for creating duality JSON views in Oracle changes in the latest published docker images, we will need to investigate but this seems unrelated yes

Yes, latest oracle-free image is giving this error. Looking now for changes needed to fix it.

[radovanradic]

seems the syntax for creating duality JSON views in Oracle changes in the latest published docker images, we will need to investigate but this seems unrelated yes

Yes, latest oracle-free image is giving this error. Looking now for changes needed to fix it.

@rlconst I have pushed fix to 4.8.x, please try pulling latest changes and the test should pass.

[mikehearn]

This doesn't seem right. I can't do this, which is why I filed issue #3398

e.g.

@JdbcRepository(dialect = Dialect.ORACLE)
public interface DeletionTestQueries {
    @Query(value = "SELECT COUNT(*) FROM xxx WHERE yyy", nativeQuery = true)
    int countActivations(String id);

    @Query(value = "DELETE FROM xxx WHERE id = :id", nativeQuery = true)
    void deleteThread(String id);
}

With or without nativeQuery = true, I get the error about needing a repository.