<update id="update" parameterType="java.util.List">

          UPDATE setting

          SET content = CASE id

              <foreach collection="list" item="setting" >

                  WHEN #{setting.id} THEN #{setting.content}

              </foreach>

          END

          WHERE

              id in (<foreach collection="list" item="setting" separator="," >

                          #{setting.id}

                      </foreach>

                    )

      </update>