Returning value from PL/SQL block

Question

I need to return a value from a PL/SQL block in MyBatis.

The PL/SQL block is this:

DECLARE
BEGIN
    <foreach collection="params" item="param">
        UPDATE PRIORITIES
        SET PRIORITY = #{param.priority}
        WHERE ID = #{param.id};
    </foreach>
END

The reason I need to return a value, is that I want to be able to get the number of affected rows.

I know I could do it like this:

<update id="updateAll" parameterType="map">
    { call
    DECLARE
    BEGIN
        <foreach collection="params" item="param">
            UPDATE PRIORITIES
            SET PRIORITY = #{param.priority}
            WHERE ID = #{param.id};
        </foreach>

        #{affected_rows, jdbcType=DECIMAL, mode=OUT} := sql%rowcount;
    END
    }
</update>

But this means I must have a method like this in the java mapper:

public void updateAll(Map<String, String> parameters);

I have this instead:

public int updateAll(@Param("params") List<PriorityModel> model);

Is there a way to return that value without having a map?

Answer 1

I think you can't return a value from a procedure call. It's possible set a value in an object like a pojo or a map like your example but, i think if you at the same sql transaction execute a query after the updates like this:

SELECT sql%rowcount FROM DUAL;

You can get the number of affected rows like a ResultSet.