Mybatis的choose when otherwise

<select id="getCount" resultType="int">
    select count(1) from
    <choose>
        <when test='type!=null and type=="2"'>    （或者<when test="type!=null and type=='2'.toString()">）
            t_evaluate_training t,t_training_org tt
        </when>
        <otherwise>
            t_evaluate_company t,t_company_info tt
        </otherwise>
    </choose>
    where t.company_id=tt.id
     and t.del_flag=1
     and tt.del_flag=1
    <if test="userId!=null">
        and t.evaluate_user=#{userId}
    </if>
</select>