Constants.java

public final static Constants {
  public final static String COMPLEX_QUERY = "SELECT * FROM A_VERY_COMPLEX_QUERY";
}

Repository1.java

@Repository
public class Repository1 {

  public List<Item1> getItems() {
    List<Item1> items = new ArrayList<>();
    List<Map> rows = getJdbcTemplate().queryForList(Constants.COMPLEX_QUERY);
    for (Map row : rows) {
      Item1 item = new Item();
      item.setX((String)(row.get("X")));
      item.setY((String)row.get("Y"));
      item.setZ((String)row.get("Z"));
      items.add(item);
    }
    return items;
  }
  
}

Repository2.java

@Repository
public class Repository2 {

  public List<Item2> getItems(final Integer param){
    List<Item2> items = new ArrayList<>();
    List<Map> rows = getJdbcTemplate().queryForList(Constants.COMPLEX_QUERY + " and param="+param);
    for (Map row : rows) {
      Item2 item = new Item2();
      item.setA((String)(row.get("A")));
      item.setB((String)row.get("B"));
      item.setC((String)row.get("C"));
      items.add(item);    
    }
    return items;
  }
}