foreach中collection的用法

<update id="passes" parameterType="java.util.Long">
2           update t_se_drug set flag =2
            where id in
3        <foreach collection="ids" index="index" item="id" open="(" separator="," close=")">
4                #{id}       
5        </foreach>    
6    </update>

对应传进来是数组 Long[] ids