@Segment

Marks an interface method to define a reusable SQL fragment. The method name is the fragment name, referenced in other SQL via the @{macro,fragmentName} rule.

Example: reuse a column list via SQL fragment

@SimpleMapper
public interface UserMapper {
    @Segment("user_uuid, user_name, login_name, email, register_time")
    void userColumns(); // Method name = fragment name

    @Insert({"insert into user_info (@{macro,userColumns})",
             "values (#{userUuid}, #{name}, #{loginName}, #{email}, #{registerTime})"})
    int createUser(UserInfo info);
}

tip

@Segment methods return void — they are never actually called; they only serve as SQL fragment carriers. value supports string arrays.

Properties

Property	Description
value	Required SQL fragment content (supports string arrays, joined with spaces).