Package org.apache.ibatis.annotations

Annotation Type SelectProvider

  • @Documented
@Retention(RUNTIME)
@Target(METHOD)
@Repeatable(List.class)
public @interface SelectProvider
    The annotation that specify a method that provide an SQL for retrieving record(s).

    How to use: 

     public interface UserMapper {

   @SelectProvider(type = SqlProvider.class, method = "selectById")
   User selectById(int id);

   public static class SqlProvider {
     public static String selectById() {
       return "SELECT id, name FROM users WHERE id = #{id}";
     }
   }

 }
    Author:
    Clinton Begin

    • Optional Element Summary

      Optional Elements 
      Modifier and Type Optional Element Description
      String databaseId  
      String method
      Specify a method for providing an SQL.
      Class<?> type
      Specify a type that implements an SQL provider method.
      Class<?> value
      Specify a type that implements an SQL provider method.

    • Element Detail

      • value

        Class<?> value
        Specify a type that implements an SQL provider method.
        Returns:
        a type that implements an SQL provider method
        Since:
        3.5.2
        See Also:
        type()
        Default:
        void.class

      • type

        Class<?> type
        Specify a type that implements an SQL provider method.

        This attribute is alias of value().

        Returns:
        a type that implements an SQL provider method
        See Also:
        value()
        Default:
        void.class

      • method

        String method
        Specify a method for providing an SQL.

        Since 3.5.1, this attribute can omit. If this attribute omit, the MyBatis will call a method that decide by following rules.

        • If class that specified the type() attribute implements the ProviderMethodResolver, the MyBatis use a method that returned by it
        • If cannot resolve a method by ProviderMethodResolver(= not implement it or it was returned null), the MyBatis will search and use a fallback method that named provideSql from specified type
        Returns:
        a method name of method for providing an SQL
        Default:
        ""

      • databaseId

        String databaseId
        Returns:
        A database id that correspond this provider
        Since:
        3.5.5
        Default:
        ""