Mybatis 批量插入语句

Mybatis批量插入的资料，很多都是mysql的，insert into ... values (),(),...
oracle中不支持这种语法，oracle中的批量插入是酱紫insert into selcect ... union all select ...

mysql

<insert id="addRoleModule" parameterType="java.util.List">
    INSERT INTO T_P_ROLE_MODULE (ROLE_ID, MODULE_ID)
    VALUES <foreach collection="list" item="item" index="index"  
    separator=",">  
    ( #{item.roleId}, #{item.moduleId})  
    </foreach>  
</insert

>


oracle

<insert id="addRoleModule" parameterType="java.util.List">
    INSERT INTO T_P_ROLE_MODULE (ROLE_ID, MODULE_ID)
    <foreach collection="list" item="item" index="index" separator=" UNION ALL ">  
    SELECT #{item.roleId}, #{item.moduleId} FROM DUAL
    </foreach>  
</insert>