Query parser should handle safe navigation SpEL operator

[gregturn]

In this example (from #2032):

public interface BookErrorRepository extends Repository<BookError, Long> {

    @Query("FROM BookError b WHERE portal = :portal AND date >= :startDate AND date <= :endDate" +
           " AND (:search IS NULL OR keyword LIKE :search%)" +
           " AND (:state IS NULL OR errors = :#{#state?.shortMessage})")
    Page<BookError> findByPortalInDateRange(@Param("portal") Portal portal,
            @Param("startDate") LocalDate startDate,
            @Param("endDate") LocalDate endDate,
            @Param("search") Optional<String> search,
            @Param("state") Optional<State> state,
            Pageable pageable);

}

...the SpEL safe navigation operation (?.) isn't handled this needs to added to the parser grammar and properly handled in rendering and transforming queries.

[mp911de]

I'm not sure this is related to query parsing. It's more an aspect of rewriting the query into a valid JPQL/HQL syntax and replacing SpEL with parameter placeholders.

[gregturn]

I believe that thanks to 5f244c4, there is no longer any need to handle SpEL in the query parsers, so this issue is no longer relevant.

[gregturn]

See #2881 for efforts to remove SpEL support from the query parsers.