如何在没有 @Query 的情况下使用 Spring Data JDBC 运行自定义 SQL？

Question

Is there a possibility to run some custom SQL query generated via 3rd party tools like eg jOOQ and still benefit from Spring Data JDBC mapping features ie @Column annotations? I don't want to use @Query annotation.

class Model { @Id private Long id; @Column("column") private String prop; }

class MyRepo {
  public Model runQuery() {
    val queryString = lib.generateSQL()
    // run query as if it has been generated by Spring Data JDBC and map
    // results to Model automatically
  }
}

Answer 1

Perhaps JdbcTemplate can solve your problem? Specifically, one of the queryForObject() methods may be of interest since your are requesting a single object:

class MyRepo {
    private JdbcTemplate jdbcTemplate;

    @Autowired
    MyRepo(JdbcTemplate jdbcTemplate) {
        this.jdbcTemplate = jdbcTemplate;
    }        

    public Model runQuery() {
        val query = lib.generateQuery();
        return jdbcTemplate.queryForObject(query, Model.class);
    }
}

More information and other use cases can be found in the Spring Guide Accessing Relational Data using JDBC with Spring